{"id":3338,"date":"2013-05-23T10:51:34","date_gmt":"2013-05-23T02:51:34","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338"},"modified":"2018-01-02T03:09:36","modified_gmt":"2018-01-01T19:09:36","slug":"caching-tutorial-for-web-authors-and-webmasters","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2013\/05\/caching-tutorial-for-web-authors-and-webmasters\/","title":{"rendered":"\u7ffb\u8bd1\uff1aweb\u5236\u4f5c\u3001\u5f00\u53d1\u4eba\u5458\u9700\u77e5\u7684Web\u7f13\u5b58\u77e5\u8bc6"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a><br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338<\/a><\/p>\n<style>.web_cache_index a:visited{color:#cd0000;}sup{color:#666; letter-spacing:-1px;}.right_exp{width:240px; float:right; border-left:1px solid #ccc; padding-left:1em!important; margin-left:1em; color:#666;}<\/style>\n<div id=\"link\" style=\"padding:4px 8px;\">\n\u672c\u6587\u539f\u5740\uff1a<a href=\"http:\/\/www.mnot.net\/cache_docs\/\">http:\/\/www.mnot.net\/cache_docs\/<\/a>\uff08\u5e38\u5e74\u66f4\u65b0\uff09<br \/>\n\u5df2\u6709\u8bd1\u4f5c\uff1a<a href=\"http:\/\/www.chedong.com\/tech\/cache_docs.html\">\u9762\u5411\u7ad9\u957f\u548c\u7f51\u7ad9\u7ba1\u7406\u5458\u7684Web\u7f13\u5b58\u52a0\u901f\u6307\u5357(2007-09-06)<\/a>\uff08\u5f00\u59cb\u7ffb\u8bd1\u4e0d\u9519\u3001\u540e\u9762\u5c31\u2026\u2026\uff09\u3001<a href=\"http:\/\/www.sunnyu.com\/?p=163\">Web Cache Tutorial (\u8bd1)Part-1(2009-01-15)<\/a>\u548c<a href=\"http:\/\/www.sunnyu.com\/?p=164\">Web Cache Tutorial (\u8bd1)Part-2(2009-01-16)<\/a>\uff08\u4ece\u5934\u5230\u5c3e\u80fd\u591f\u9171\u6cb9\u7684\u5c31\u9171\u6cb9\uff0c\u8fd8\u67091\/3\u7f3a\u5931~\uff09<br \/>\n\u671d\u82b1\u5915\u62fe\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a>\n<\/div>\n<p>\u6700\u8fd1\u7684\u8bd1\u6587\u8ddd\u4eca\u5df2\u67094\u5e74\u4e4b\u4e45\uff0c\u539f\u6587\u6709\u4e00\u5b9a\u7684\u66f4\u65b0\u3002\u4eca\u5929\u8e29\u7740\u524d\u8f88\u4eec\u7684\u80a9\u8180\uff0c\u518d\u6b21\u628a\u8fd9\u7bc7\u6587\u7ae0\u7ffb\u8bd1\u6574\u7406\u4e0b\u3002\u4e00\u6765\u8ba9\u81ea\u5df1\u5bf9web\u7f13\u5b58\u7684\u7406\u89e3\u66f4\u6df1\u523b\u4e9b\uff0c\u4e8c\u6765\u8ba9\u5927\u5bb6\u6ce8\u610f\u529b\u7a0d\u7a0d\u8f6c\u79fb\u4e0b\uff0c\u4e0d\u8981\u6574\u5929HTML5, \u9762\u8bd5\u9898\u554a\u53e8\u554a\u53e8\u7684~~<\/p>\n<div style=\"padding:3px; background-color:#eee;\">\n<div style=\"border:1px solid #cacaca;\">\n<div style=\"background-color:#eee; padding:10px; background-image:linear-gradient(#FAFAFA, #EAEAEA);\">\u7ffb\u8bd1\u6b63\u6587(2013-05-20 &#8211; 2013-05-23)<\/div>\n<div style=\"padding:20px; background-color:#fff;\">\n<ol class=\"web_cache_index\" style=\"font-family:'\u5fae\u8f6f\u96c5\u9ed1';\">\n<li><a href=\"#DEFINITION\">\u4ec0\u4e48\u662fWeb\u7f13\u5b58\uff0c\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u5b83\uff1f<\/a><\/li>\n<li><a href=\"#KINDS\">\u7f13\u5b58\u7684\u7c7b\u578b\uff1a<\/a><\/li>\n<ol>\n<li><a href=\"#BROWSER\">\u6d4f\u89c8\u5668\u7f13\u5b58\uff1b<\/a><\/li>\n<li><a href=\"#PROXY\">\u4ee3\u7406\u670d\u52a1\u5668\u7f13\u5b58\uff1b<\/a><\/li>\n<li><a href=\"#GETWAY\">\u7f51\u5173\u7f13\u5b58\uff1b<\/a><\/li>\n<\/ol>\n<li><a href=\"#WHY\">Web\u7f13\u5b58\u65e0\u5bb3\u5417\uff1f\u4e3a\u4ec0\u4e48\u8981\u9f13\u52b1\u7f13\u5b58\uff1f<\/a><\/li>\n<li><a href=\"#WORK\">Web\u7f13\u5b58\u5982\u4f55\u5de5\u4f5c<\/a><\/li>\n<li><a href=\"#CONTROL\">\u5982\u4f55\u63a7\u5236\u7f13\u5b58\u548c\u4e0d\u7f13\u5b58\uff1a<\/a><\/li>\n<ol>\n<li><a href=\"#META\">HTML Meta\u6807\u7b7e vs. HTTP\u5934\u4fe1\u606f\uff1b<\/a><\/li>\n<li><a href=\"#PRAGMA\">Pragma HTTP\u5934\u4fe1\u606f\uff08\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u4e0d\u8d77\u4f5c\u7528\uff09\uff1b<\/a><\/li>\n<li><a href=\"#EXPIRES\">\u4f7f\u7528Expires HTTP\u5934\u4fe1\u606f\u63a7\u5236\u4e0d\u8fc7\u671f\uff1b<\/a><\/li>\n<li><a href=\"#CACHE-CONTROL\">Cache-Control\uff08\u7f13\u5b58\u63a7\u5236\uff09HTTP\u5934\u4fe1\u606f\uff1b<\/a><\/li>\n<li><a href=\"#VALIDATE\">\u9a8c\u8bc1\u5668\u548c\u9a8c\u8bc1\uff1b<\/a><\/li>\n<\/ol>\n<li><a href=\"#TIPS\">\u521b\u5efa\u652f\u6301\u7f13\u5b58\u7f51\u7ad9\u7684\u5c0f\u6280\u5de7\uff1b<\/a><\/li>\n<li><a href=\"#SCRIPT\">\u7f16\u5199\u652f\u6301\u7f13\u5b58\u7684\u811a\u672c\uff1b<\/a><\/li>\n<li><a href=\"#FAQ\">\u5e38\u89c1\u95ee\u9898\u89e3\u7b54\uff1b<\/a><\/li>\n<li><a href=\"#IMP-SERVER\">\u5b9e\u73b0\u9700\u6ce8\u610f\u7684\uff1aWeb\u670d\u52a1\u5668\u7aef\uff1b<\/a><\/li>\n<li><a href=\"#IMP-SCRIPT\">\u5b9e\u73b0\u9700\u6ce8\u610f\u7684\uff1a\u670d\u52a1\u7aef\u811a\u672c\uff1b<\/a><\/li>\n<li><a href=\"#REF\">\u53c2\u8003\u6587\u6863\u548c\u62d3\u5c55\u9605\u8bfb\uff1b<\/a><\/li>\n<li><a href=\"#ABOUT\">\u5173\u4e8e\u672c\u6587\u6863\uff1b<\/a><\/li>\n<\/ol>\n<h3 id=\"DEFINITION\">\u4ec0\u4e48\u662fWeb\u7f13\u5b58\uff0c\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u5b83\uff1f<\/h3>\n<p><em>Web\u7f13\u5b58<\/em>\u6e38\u8d70\u4e8e\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4e4b\u95f4\u3002\u8fd9\u4e2a\u670d\u52a1\u5668\u53ef\u80fd\u662f\u6e90\u670d\u52a1\u5668\uff08\u8d44\u6e90\u6240\u9a7b\u7559\u7684\u670d\u52a1\u5668<sup>Add<\/sup>\uff09\uff0c\u6570\u91cf\u53ef\u80fd\u662f1\u4e2a\u6216\u591a\u4e2a\uff1b\u8fd9\u4e2a\u5ba2\u6237\u7aef\u4e5f\u53ef\u80fd\u662f1\u4e2a\u6216\u591a\u4e2a\u3002<em>Web\u7f13\u5b58<\/em>\u5c31\u5728\u670d\u52a1\u5668-\u5ba2\u6237\u7aef\u4e4b\u95f4\u641e\u76d1\u63a7\uff0c\u76d1\u63a7\u8bf7\u6c42\uff0c\u5e76\u4e14\u628a\u8bf7\u6c42\u8f93\u51fa\u7684\u5185\u5bb9\uff08\u4f8b\u5982html\u9875\u9762\u3001 \u56fe\u7247\u548c\u6587\u4ef6\uff09\uff08\u7edf\u79f0\u4e3a<em>\u526f\u672c<\/em>\uff09\u53e6\u5b58\u4e00\u4efd\uff1b\u7136\u540e\uff0c\u5982\u679c\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u662f\u76f8\u540c\u7684URL\uff0c\u5219\u76f4\u63a5\u8bf7\u6c42\u4fdd\u5b58\u7684\u526f\u672c\uff0c\u800c\u4e0d\u662f\u518d\u6b21\u9ebb\u70e6\u6e90\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4f7f\u7528\u7f13\u5b58\u76842\u4e2a\u4e3b\u8981\u539f\u56e0\uff1a<\/p>\n<ul style=\"margin-top:0;\">\n<li><strong>\u964d\u4f4e\u5ef6\u8fdf\uff1a<\/strong>\u7f13\u5b58\u79bb\u5ba2\u6237\u7aef\u66f4\u8fd1\uff0c\u56e0\u6b64\uff0c\u4ece\u7f13\u5b58\u8bf7\u6c42\u5185\u5bb9\u6bd4\u4ece\u6e90\u670d\u52a1\u5668\u6240\u7528\u65f6\u95f4\u66f4\u5c11\uff0c\u5448\u73b0\u901f\u5ea6\u66f4\u5feb\uff0c\u7f51\u7ad9\u5c31\u663e\u5f97\u66f4\u7075\u654f\u3002<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/huojian.jpg\" width=\"40\" height=\"32\" alt=\"\u706b\u7bad\"><\/li>\n<li><strong>\u964d\u4f4e\u7f51\u7edc\u4f20\u8f93\uff1a<\/strong>\u526f\u672c\u88ab\u91cd\u590d\u4f7f\u7528\uff0c\u5927\u5927\u964d\u4f4e\u4e86\u7528\u6237\u7684\u5e26\u5bbd\u4f7f\u7528\uff0c\u5176\u5b9e\u4e5f\u662f\u4e00\u79cd\u53d8\u76f8\u7684\u7701\u94b1\uff08\u5982\u679c\u6d41\u91cf\u8981\u4ed8\u8d39\u7684\u8bdd\uff09\uff0c\u540c\u65f6\u4fdd\u8bc1\u4e86\u5e26\u5bbd\u8bf7\u6c42\u5728\u4e00\u4e2a\u4f4e\u6c34\u5e73\u4e0a\uff0c\u66f4\u5bb9\u6613\u7ef4\u62a4\u4e86\u3002<\/li>\n<\/ul>\n<h3 id=\"KINDS\">Web\u7f13\u5b58\u7684\u7c7b\u578b<\/h3>\n<p><strong id=\"BROWSER\">1. \u6d4f\u89c8\u5668\u7f13\u5b58<\/strong><br \/>\u5728\u4efb\u4f55\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0a(\u5982IE, FireFox, Chrome)\u6298\u817e\u6e05\u9664\u9690\u79c1\u6570\u636e<span class=\"s\">\uff08\/\/zxx: \u539f\u6587\u8bf4\u7684\u662f\u9996\u9009\u9879\uff0c\u663e\u7136out\u4e86\uff0c\u8fd9\u91cc\u6709\u6539\u52a8\uff09<\/span>\u7684\u5bf9\u8bdd\u6846\uff0c\u4f60\u5f88\u53ef\u80fd\u4f1a\u6ce8\u610f\u5230\u201c\u7f13\u5b58\u201d\u8fd9\u4e2a\u8bbe\u7f6e\u9879\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/2013-05-20_174657.png\" width=\"593\" height=\"292\" alt=\"Chrome\u6d4f\u89c8\u5668\u4e2d\u7684\u6e05\u9664\u7f13\u5b58\u9009\u9879\"><\/p>\n<p>\u6d4f\u89c8\u5668\u4f1a\u5728\u4f60\u7684\u786c\u76d8\u4e0a\u4e13\u95e8\u5f00\u8f9f\u4e00\u4e2a\u7a7a\u95f4\u4e13\u95e8\u4e3a\u4f60\u5b58\u50a8\u8d44\u6e90\u526f\u672c\u3002\u6d4f\u89c8\u5668\u7f13\u5b58\u7684\u5de5\u4f5c\u89c4\u5219\u5f88\u7b80\u5355\uff1a\u68c0\u67e5\u4ee5\u786e\u4fdd\u526f\u672c\u662f\u6700\u65b0\u7684\uff0c\u901a\u5e38\u53ea\u8981\u4e00\u6b21\u4f1a\u8bdd\uff08\u5c31\u662f\u5f53\u524d\u6d4f\u89c8\u5668\u8c03\u7528\u7684\u8fd9\u6b21<sup title=\"\u65b0\">N<\/sup>\uff09\u3002<\/p>\n<p>\u6d4f\u89c8\u5668\u7f13\u5b58\u5728\u7528\u6237\u89e6\u53d1\u201c\u540e\u9000\u201d\u64cd\u4f5c\u6216\u70b9\u51fb\u4e00\u4e2a\u4e4b\u524d\u770b\u8fc7\u7684\u94fe\u63a5\u7684\u65f6\u5019\u5f88\u7ba1\u7528\u3002\u540c\u6837\uff0c\u5982\u679c\u4f60\u5728\u7f51\u7ad9\u4e0a\u8bbf\u95ee\u540c\u4e00\u5f20\u56fe\u7247\uff0c\u8be5\u56fe\u7247\u53ef\u4ee5\u4ece\u6d4f\u89c8\u5668\u7f13\u5b58\u4e2d\u8c03\u51fa\u5e76\u51e0\u4e4e\u7acb\u5373\u663e\u73b0\u51fa\u6765\u3002<\/p>\n<p><strong id=\"PROXY\">2. \u4ee3\u7406\u670d\u52a1\u5668\u7f13\u5b58<\/strong><br \/>Web\u4ee3\u7406\u670d\u52a1\u5668\u4f7f\u7528\u540c\u6837\u7684\u7f13\u5b58\u539f\u7406\uff0c\u53ea\u662f\u89c4\u6a21\u66f4\u5927\u3002\u4ee3\u7406\u4ee5\u540c\u6837\u7684\u65b9\u5f0f\u670d\u52a1\u5343\u4e07\u7528\u6237\uff0c\u5927\u516c\u53f8\u548cISP(Internet Server Provider, Internet\u670d\u52a1\u63d0\u4f9b\u5546<sup title=\"\u8865\u5145\">Add<\/sup>)\u7ecf\u5e38\u5728\u4ed6\u4eec\u7684\u9632\u706b\u5899\u6216\u8005\u5355\u72ec\u7684\u8bbe\u5907\uff08\u4e5f\u88ab\u79f0\u4e3a<em>\u4e2d\u4ecb(intermediaries)<\/em>\uff09\u4e0a\u67b6\u8bbe\u4ee3\u7406\u7f13\u5b58\u3002<\/p>\n<p>\u7531\u4e8e\u4ee3\u7406\u670d\u52a1\u5668\u7f13\u5b58\u5e76\u975e\u5ba2\u6237\u7aef\u6216\u8005\u6e90\u670d\u52a1\u5668\u7684\u4e00\u90e8\u5206\uff0c\u800c\u662f\u5904\u4e8e\u7f51\u7edc\u4e2d\uff0c\u8bf7\u6c42\u9700\u8981\u4ee5\u67d0\u79cd\u65b9\u5f0f\u8def\u7531\u5230\u5b83\u4eec\u3002\u4e00\u79cd\u65b9\u6cd5\u662f\u624b\u52a8\u8bbe\u7f6e\uff0c\u544a\u8bc9\u6d4f\u89c8\u5668\u7684\u4f60\u5e38\u7528\u7684\u4ee3\u7406\u670d\u52a1\u5668(<span class=\"s\">\/\/zxx: \u7ffb\u5899\u7684\u65f6\u5019\u5e38\u7528\u7684<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/13.gif\" align=\"absmiddle\"><\/span>)\uff0c\u53e6\u5916\u5c31\u662f\u4f7f\u7528\u62e6\u622a\u3002<em>\u62e6\u622a\u4ee3\u7406(Interception proxies)<\/em>\u628aWeb\u8bf7\u6c42\u6839\u636e\u81ea\u5df1\u7684\u5e95\u5c42\u7f51\u7edc\u91cd\u5b9a\u5411\uff0c\u56e0\u6b64\uff0c\u5ba2\u6237\u7aef\u65e0\u9700\u914d\u7f6e\uff0c\u751a\u81f3\u90fd\u4e0d\u9700\u8981\u77e5\u9053\u5b83\u4eec\u3002<span class=\"s\">\/\/zxx: \u7ef4\u57fa\u767e\u79d1\u4e0a\u63d0\u4f9b\u7684\u51e0\u79cd\u68c0\u6d4b\u62e6\u622a\u4ee3\u7406\u670d\u52a1\u5668\u5b58\u5728\u7684\u65b9\u6cd5<sup>add<\/sup>\uff0c\u60a8\u82e5\u6709\u5174\u8da3\uff0c\u53ef\u4ee5<a href=\"\/\/en.wikipedia.org\/wiki\/Proxy_server#Detection\">\u70b9\u51fb\u8fd9\u91cc<\/a>\u67e5\u770b\u3002<\/span><\/p>\n<p>\u4ee3\u7406\u7f13\u5b58\u5c5e\u4e8e\u4e00\u79cd<em>\u5171\u4eab\u7f13\u5b58<\/em>\uff1b\u5f80\u5f80\u6709\u5927\u91cf\u7684\u7528\u6237\u4f7f\u7528\uff0c\u56e0\u6b64\uff0c\u5176\u5728\u964d\u4f4e\u5ef6\u65f6\u548c\u7f51\u7edc\u6d41\u91cf\u4e0a\u5f88\u6709\u7528\uff0c\u6bd5\u7adf\u6bcf\u4e2a\u526f\u672c\u90fd\u88ab\u5927\u91cf\u91cd\u7528\u3002<span class=\"s\">\/\/zxx: \u8fd9\u91cc\u6211\u6709\u7591\u95ee\uff1a\u5c31\u7b97\u662f\u653e\u5728\u4ee3\u7406\u670d\u52a1\u5668\u4e0a\uff0c\u6bcf\u6b21\u83b7\u53d6\u8fd8\u662f\u8981\u901a\u8fc7\u7f51\u7edc\u7684\u554a\uff0c\u5982\u4f55\u964d\u4f4e\u4e86\u7f51\u7edc\u6d41\u91cf\u5462\uff1f\u5e0c\u671b\u8c01\u53ef\u4ee5\u5e2e\u5fd9\u89e3\u60d1\u4e0b\u3002<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/78.gif\" align=\"absmiddle\"><\/span><\/p>\n<p><strong id=\"GETWAY\">3. \u7f51\u5173\u7f13\u5b58<\/strong><br \/>\u4e5f\u88ab\u79f0\u4e3a\u201c\u53cd\u5411\u4ee3\u7406\u7f13\u5b58\u201d\u6216\u201c\u66ff\u4ee3\u7f13\u5b58\u201d\u3002\u7f51\u5173\u7f13\u5b58\u540c\u6837\u662f\u8d77\u4e2d\u4ecb\u4f5c\u7528\u7684\uff0c\u4e0d\u8fc7\u4e0d\u662f\uff08\u7d20\u4e0d\u76f8\u8bc6\u3001\u4e0d\u66fe\u8c0b\u9762\u7684<sup>Add<\/sup>\uff09\u7f51\u7edc\u7ba1\u7406\u5458\u90e8\u7f72\u7684\uff0c\u800c\u591a\u534a\u662f\u7f51\u7ad9\u7ba1\u7406\u5458\uff08\u516c\u53f8\u4e13\u95e8\u7684\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u3001\u6216UED\u6216\u7a0b\u5e8f\u7ec4\u67d0\u4eba<sup>Add<\/sup>\uff09\u4ed6\u4eec\u81ea\u5df1\u90e8\u7f72\uff0c\u8fd9\u6837\u66f4\u5bb9\u6613\u6269\u5c55\u4e0e\u7ef4\u62a4\u3002<\/p>\n<p>\u53ef\u4ee5\u6709\u591a\u79cd\u65b9\u6cd5\u628a\u8bf7\u6c42\u8def\u7531\u5230\u7f51\u5173\u7f13\u5b58\uff0c\u4f46\u901a\u5e38\u4f7f\u7528\u67d0\u79cd\u5f62\u5f0f\u7684\u8d1f\u8f7d\u5747\u8861\u5668<sup title=\"\u67e5\u770b\u5bf9\u5e94\u8bf4\u660e\"><a href=\"#MARK1\">\u2460<\/a><\/sup>\uff0c\u4f7f\u5b83\u4eec\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u770b\u8d77\u6765\u50cf\u662f\u6e90\u670d\u52a1\u5668\u3002<em>\u5185\u5bb9\u5206\u53d1\u7f51\u7edc<\/em><sup title=\"\u67e5\u770b\u5bf9\u5e94\u5907\u6ce8\"><a href=\"#MARK2\">\u2461<\/a><\/sup>(CDNs)\u4e3a\u6574\u4e2a\u7f51\u7edc\uff08\u6216\u90e8\u5206\uff09\u5206\u914d\u7f51\u5173\u7f13\u5b58\uff0c\u7136\u540e\u628a\u8fd9\u4e9b\u7f13\u5b58\u5356\u7ed9\u9700\u8981\u7684\u7f51\u7ad9\u3002<a href=\"http:\/\/www.speedera.com\/\">Speedera<\/a><sup><a href=\"#MARK3\">\u2462<\/a><\/sup>\u548c<a href=\"http:\/\/www.akamai.com\/\">Akamai<\/a><sup><a href=\"#MARK4\">\u2463<\/a><\/sup>\u5c31\u662f\u4ee3\u8868\u6027\u7684\u7f51\u7edc\u5185\u5bb9\u53d1\u5e03\u5546\u3002<\/p>\n<blockquote id=\"MARK1\"><p>\u2460\u8d1f\u8f7d\u5747\u8861\u5668\uff1a\u662f\u4e00\u79cd\u91c7\u7528\u5404\u79cd\u5206\u914d\u7b97\u6cd5\u628a\u7f51\u7edc\u8bf7\u6c42\u5206\u6563\u5230\u4e00\u4e2a\u670d\u52a1\u5668\u96c6\u7fa4\u4e2d\u7684\u53ef\u7528\u670d\u52a1\u5668\u4e0a\u53bb\uff0c\u901a\u8fc7\u7ba1\u7406\u8fdb\u5165\u7684Web\u6570\u636e\u6d41\u91cf\u548c\u589e\u52a0\u6709\u6548\u7684\u7f51\u7edc\u5e26\u5bbd\uff0c\u4ece\u800c\u4f7f\u7f51\u7edc\u8bbf\u95ee\u8005\u83b7\u5f97\u5c3d\u53ef\u80fd\u6700\u4f73\u7684\u8054\u7f51\u4f53\u9a8c\u7684\u786c\u4ef6\u8bbe\u5907\u3002<\/p>\n<p id=\"MARK2\">\u2461\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff1a\u5373CDN, \u57fa\u672c\u601d\u8def\u662f\u5c3d\u53ef\u80fd\u907f\u5f00\u4e92\u8054\u7f51\u4e0a\u6709\u53ef\u80fd\u5f71\u54cd\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u7684\u74f6\u9888\u548c\u73af\u8282\uff0c\u4f7f\u5185\u5bb9\u4f20\u8f93\u7684\u66f4\u5feb\u3001\u66f4\u7a33\u5b9a\u3002\u901a\u8fc7\u5728\u7f51\u7edc\u5404\u5904\u653e\u7f6e\u8282\u70b9\u670d\u52a1\u5668\u6240\u6784\u6210\u7684\u5728\u73b0\u6709\u7684\u4e92\u8054\u7f51\u57fa\u7840\u4e4b\u4e0a\u7684\u4e00\u5c42\u667a\u80fd\u865a\u62df\u7f51\u7edc\uff0cCDN\u7cfb\u7edf\u80fd\u591f\u5b9e\u65f6\u5730\u6839\u636e\u7f51\u7edc\u6d41\u91cf\u548c\u5404\u8282\u70b9\u7684\u8fde\u63a5\u3001\u8d1f\u8f7d\u72b6\u51b5\u4ee5\u53ca\u5230\u7528\u6237\u7684\u8ddd\u79bb\u548c\u54cd\u5e94\u65f6\u95f4\u7b49\u7efc\u5408\u4fe1\u606f\u5c06\u7528\u6237\u7684\u8bf7\u6c42\u91cd\u65b0\u5bfc\u5411\u79bb\u7528\u6237\u6700\u8fd1\u7684\u670d\u52a1\u8282\u70b9\u4e0a\u3002\u5176\u76ee\u7684\u662f\u4f7f\u7528\u6237\u53ef\u5c31\u8fd1\u53d6\u5f97\u6240\u9700\u5185\u5bb9\uff0c\u89e3\u51b3 Internet\u7f51\u7edc\u62e5\u6324\u7684\u72b6\u51b5\uff0c\u63d0\u9ad8\u7528\u6237\u8bbf\u95ee\u7f51\u7ad9\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n<p id=\"MARK3\">\u2462Speedera\uff1a\u662f\u4e00\u5bb6\u5168\u7403\u6027\u7684\u5185\u5bb9\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u5b83\u4e0e\u5317\u7f8e\u3001\u6b27\u6d32\u4ee5\u53ca\u4e9a\u592a\u5730\u533a\u76841000\u591a\u5bb6\u5927\u578b\u8fd0\u8425\u5546\u90fd\u6709\u8054\u7cfb\uff0c\u5e76\u4e3a\u90a3\u4e9b\u4e0d\u60f3\u5728\u81ea\u5df1\u670d\u52a1\u5668\u4e0a\u5bc4\u5b58\u5185\u5bb9\u7684\u516c\u53f8\u63d0\u4f9b\u8f6f\u4ef6\u4e0b\u8f7d\u3001\u5a92\u4f53\u53ca\u5176\u5b83\u670d\u52a1\u7ba1\u7406\u7b49\u4e1a\u52a1\u300205\u5e74\u7684\u65f6\u5019\u88ab\u4e0b\u9762\u8981\u4ecb\u7ecd\u7684Akamai\u4ee5$130m\u7684\u4ef7\u683c\u7ed9\u6536\u8d2d\u4e86\u3002<\/p>\n<p id=\"MARK4\">\u2463Akamai\uff1a\u7f8e\u56fdAkamai\u662f\u56fd\u9645\u4e0a\u6700\u5927\u7684CDN\u670d\u52a1\u5546\uff0c\u5b83\u5de8\u5927\u7684\u7f51\u7edc\u5206\u53d1\u80fd\u529b\u5728\u5cf0\u503c\u65f6\u53ef\u8fbe\u523015Tbps\u3002Akamai\u516c\u53f8\u662f\u4e3a\u6570\u4e0d\u591a\u7684\u65e8\u5728\u6d88\u9664Internet\u74f6\u9888\u548c\u63d0\u9ad8\u4e0b\u8f7d\u901f\u5ea6\u7684\u51e0\u5bb6\u65b0\u516c\u53f8\u4e4b\u4e00\uff0c\u662f\u4e00\u4e2a\u81f4\u529b\u4e8e\u7f51\u7edc\u4ea4\u901a\u63d0\u901f\u7684&#8221;\u5185\u5bb9\u53d1\u5e03&#8221;\u516c\u53f8\uff0c\u662f\u6ce2\u58eb\u987f\u9ad8\u6280\u672f\u533a\u6700\u5353\u8d8a\u7684\u65b0\u5174\u4f01\u4e1a\u4e4b\u4e00\u3002Akamai\u516c\u53f8\u5411\u5168\u7403\u4f01\u4e1a\u63d0\u4f9b\u53d1\u9001\u4e92\u8054\u7f51\u5185\u5bb9\uff0c\u6c47\u6d41\u5a92\u4f53\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u670d\u52a1\uff08\u76ee\u524d\uff0c\u8be5\u516c\u53f8\u4e3a15\u4e2a\u56fd\u5bb6\u7684\u4f01\u4e1a\u7ba1\u7406\u77408000\u591a\u53f0\u670d\u52a1\u5668\uff09\u30021998\u5e74\uff0c\u4e39\u5c3c\u5c14\u3002L\u548c\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u7684\u4e00\u4e9b\u7814\u7a76\u4eba\u5458\u4e00\u8d77\u521b\u7acb\u4e86\u8fd9\u5bb6\u516c\u53f8\uff0c\u4ed6\u5728\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u7684\u7855\u58eb\u8bba\u6587\u6784\u6210\u4e86Akamai\u516c\u53f8\u6700\u521d\u7684&#8221;\u81ea\u7531\u6d41&#8221;\uff08Freeflow\uff09\u6280\u672f\u7684\u6838\u5fc3\u3002<\/p>\n<\/blockquote>\n<p>\u672c\u6559\u7a0b\u91cd\u70b9\u5728\u6d4f\u89c8\u5668\u548c\u4ee3\u7406\u7f13\u5b58\uff0c\u5c3d\u7ba1\u6709\u4e9b\u4fe1\u606f\u5bf9\u7f51\u5173\u7f13\u5b58\u611f\u5174\u8da3\u7684\u4eba\u4e5f\u9002\u7528\u3002<\/p>\n<h3 id=\"WHY\">Web\u7f13\u5b58\u65e0\u5bb3\u5417\uff1f\u4e3a\u4ec0\u4e48\u8981\u9f13\u52b1\u7f13\u5b58\uff1f<\/h3>\n<p>Web\u7f13\u5b58\u662f\u4e92\u8054\u7f51\u4e2d\u6700\u5bb9\u6613\u88ab\u8bef\u89e3\u7684\u6280\u672f\u4e4b\u4e00\u3002\u7f51\u7ad9\u7ba1\u7406\u5458\u7279\u522b\u5e0c\u671b\u77e5\u9053\u7f51\u7ad9\u7684\u4e00\u4e3e\u4e00\u52a8\uff0c\u6bd4\u65b9\u8bf4\u591a\u5c11\u4eba\u8bbf\u95ee\u5566\uff0c\u8bbf\u95ee\u65f6\u95f4\u554a\u4ec0\u4e48\u7684\uff0c\u800c\u7f13\u5b58\u4f1a\u201c\u9690\u85cf\u201d\u4ed6\u4eec\u7684\u7528\u6237\uff0c\u4ed6\u4eec\u5c31\u65e0\u4ece\u5f97\u77e5\u5230\u5e95\u8c01\u8bbf\u95ee\u4e86\u8fd9\u4e2a\u7ad9\u70b9\u3002<\/p>\n<p>\u6361\u4e86\u829d\u9ebb\u4e22\u897f\u74dc\uff0c\u81ea\u8ba4\u4e3a\u653e\u5f03\u7f13\u5b58\u53ef\u4ee5\u7cbe\u786e\u8ddf\u8e2a\u7528\u6237\uff0c\u5b9e\u9645\u4e0a\uff0c\u4e92\u8054\u7f51\u4e2d\u6709\u592a\u591a\u7684\u53d8\u6570\uff0c\u60f3\u7cbe\u786e\u5f97\u5230\u4e00\u5f20\u7528\u6237\u67e5\u770b\u7f51\u7ad9\u7684\u56fe\u7247\uff1f\u6ca1\u90a3\u4e48\u7b80\u5355\u7684\uff0c\u4eb2\uff01\u5982\u679c\u4f60\u5f88\u91cd\u89c6\u8fd9\u4e2a\u95ee\u9898\uff0c\u606d\u559c\u4f60\uff0c\u672c\u6587\u6b63\u597d\u63d0\u4f9b\u4e86\u89e3\u51b3\u4e4b\u9053\uff0c\u5373\u4fdd\u8bc1\u7f13\u5b58\u53cb\u597d\uff0c\u540c\u65f6\u53c8\u80fd\u83b7\u5f97\u7edf\u8ba1\u3002<\/p>\n<p>\u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7f13\u5b58\u7684\u5185\u5bb9\u90fd\u662f\u65e7\u7684\u8fc7\u65f6\u7684\u3002\u56e0\u6b64\uff0c\u5982\u4f55\u51c6\u786e\u66f4\u65b0\u5c31\u6210\u4e86\u4e00\u4e2a\u95ee\u9898\u3002\u4e0d\u8fc7\u4e0d\u8981\u62c5\u5fc3\uff0c\u672c\u6587\u4f1a\u5411\u4f60\u5c55\u793a\u5982\u4f55\u914d\u7f6e\u670d\u52a1\u5668\uff0c\u8ba9\u7f13\u5b58\u5c31\u50cf\u4f60\u7684\u5973\u4ec6\u2014\u2014\u968f\u4fbf\u8c03\u6559\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/nvpu.jpg\" width=\"200\" height=\"93\" alt=\"\u5973\u4ec6\"><\/p>\n<p class=\"right_exp\">CDN\u7b97\u662f\u4e2a\u633a\u6709\u610f\u601d\u7684\u6280\u672f\uff0c\u4e0d\u540c\u4e8e\u4ee3\u7406\u7f13\u5b58\uff0cCDN\u7684\u7f51\u5173\u7f13\u5b58\u548c\u88ab\u7f13\u5b58\u7684Web\u7ad9\u70b9\u7684\u5229\u76ca\u662f\u4e00\u81f4\u7684\uff0c\u56e0\u6b64\uff0c\u4e0a\u9762\u63d0\u5230\u7684\u95ee\u9898\u5bf9\u4e8eCDN\u800c\u8a00\u662f\u6ca1\u6709\u7684\u3002\u4e0d\u8fc7\uff0c\u5373\u4f7f\u4f60\u4f7f\u7528\u4e86CDN\uff0c\u4f60\u4ecd\u8981\u987e\u8651\u4e0b\u6e38\u7684\u4ee3\u7406\u548c\u6d4f\u89c8\u5668\u7f13\u5b58\u3002<\/p>\n<p>\u4ee5\u4e0a\u4e3a\u7f13\u5b58\u53ef\u80fd\u7684\u201c\u7cdf\u7c95\u201d\uff0c\u90a3\u4ed6\u597d\u7684\u5730\u65b9\u5462\uff1f\u7f13\u5b58\u53ef\u4ee5\u8ba9\u4f60\u7684Web\u7ad9\u70b9\u52a0\u8f7d\u66f4\u5feb\uff0c\u8ba9\u4f60\u7684\u670d\u52a1\u5668\u548c\u4e92\u8054\u7f51\u94fe\u63a5\u95f4\u8d1f\u62c5\u66f4\u5c0f\u3002\u8fd9\u79cd\u5dee\u5f02\u4f1a\u5bfc\u81f4\u4e00\u4e9b\u7c7b\u4f3c\u8d28\u7684\u53d8\u5316\uff0c\u4e00\u4e2a\u7f51\u7ad9\u8981\u51e0\u79d2\u949f\u624d\u80fd\u52a0\u8f7d\u51fa\u6765\uff0c\u800c\u53e6\u5916\u4e00\u4e2a\u5145\u5206\u53d1\u6325\u7f13\u5b58\u7684\u4f18\u52bf\uff0c\u51e0\u4e4e\u77ac\u95f4\u663e\u793a\u3002\u7528\u6237\u81ea\u7136\u66f4\u559c\u6b22\u90a3\u4e2a\u52a0\u8f7d\u8fc5\u901f\u7684\u7ad9\u70b9\uff0c\u8bbf\u95ee\u4e5f\u66f4\u591a\u3002<\/p>\n<p>\u518d\u8bf4\u4e2a\u73b0\u5b9e\u793a\u4f8b\uff0c\u8bb8\u591a\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8\u82b1\u8d39\u4e86\u6570\u767e\u4e07\u200b\u200b\u7f8e\u5143\uff0c\u5728\u4e16\u754c\u5404\u5730\u8bbe\u7acb\u670d\u52a1\u5668\u96c6\u7fa4\u6765\u590d\u5236\u4ed6\u4eec\u7684\u5185\u5bb9\uff0c\u4ee5\u4f7f\u5176\u5c3d\u53ef\u80fd\u5feb\u88ab\u4ed6\u4eec\u7684\u7528\u6237\u8bbf\u95ee\u3002\u7f13\u5b58\u4e3a\u4f60\u505a\u540c\u6837\u7684\u4e8b\u60c5\uff0c\u800c\u4e14\u4ed6\u4eec\u66f4\u63a5\u8fd1\u6700\u7ec8\u7528\u6237\u3002\u6700\u91cd\u8981\u7684\u662f\uff0c\u4f60\u4e0d\u8981\u82b1\u94f6\u5b50\u3002<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/50.gif\" align=\"absmiddle\"><\/p>\n<p>\u5b9e\u9645\u4e0a\u5462\uff0c\u65e0\u8bba\u4f60\u559c\u6b22\u4e0e\u5426\uff0c\u4ee3\u7406\u548c\u6d4f\u89c8\u5668\u7f13\u5b58\u90fd\u4f1a\u88ab\u4f7f\u7528\u3002\u5982\u679c\u4f60\u7ad9\u70b9\u7684\u7f13\u5b58\u914d\u7f6e\u4e0d\u6b63\u786e\uff0c\u4f60\u53ea\u80fd\u542c\u5929\u7531\u547d\u4e86\u3002<\/p>\n<h3 id=\"WORK\">Web\u7f13\u5b58\u5982\u4f55\u5de5\u4f5c<\/h3>\n<p>\u6240\u4ee5\u7684\u7f13\u5b58\u90fd\u6709\u4e00\u5957\u81ea\u5df1\u7684\u89c4\u5219\uff0c\u53ef\u4ee5\u7528\u6765\u51b3\u5b9a\u4f55\u65f6\u8ddf\u7f13\u5b58\u66a7\u6627\u5f80\u6765\u3002\u5176\u4e2d\u90e8\u5206\u89c4\u5219\u8bbe\u5b9a\u5728\u534f\u8bae\u4e2d(HTTP 1.0 \u4ee5\u53ca 1.1)\uff0c\u90e8\u5206\u7531\u7f13\u5b58\u7ba1\u7406\u5458<sup><a href=\"#MARK5\">\u2464<\/a><\/sup>\u8bbe\u7f6e\u3002<\/p>\n<blockquote id=\"MARK5\"><p>\u2464\u7f13\u5b58\u7ba1\u7406\u5458\uff1a\u5982\u679c\u6307\u7684\u662f\u6d4f\u89c8\u5668\u7f13\u5b58\uff0c\u5219\u6709\u53ef\u80fd\u5c31\u662f\u6211\u4eec\u670d\u52a1\u5668\u4e13\u5bb6\u540c\u4e8b\uff0c\u5728\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u4e00\u4e9b\u7f13\u5b58\u89c4\u5219\uff1b\u5982\u679c\u662f\u4ee3\u7406\u7f13\u5b58\uff0c\u5219\u6307\u7684\u5c31\u662f\u5904\u7406\u4ee3\u7406\u670d\u52a1\u5668\u8fd9\u5757\u7684\u7ba1\u7406\u4eba\u5458\u3002<\/p><\/blockquote>\n<p>\u4e00\u822c\u800c\u8a00\u6709\u5982\u4e0b\u5e38\u7528\u89c4\u5219<sup title=\"\u672c\u6bb5\u6709\u66f4\u65b0\">N<\/sup>\uff1a<\/p>\n<ol style=\"margin-top:0;\">\n<li>\u54cd\u5e94\u5934\u660e\u786e\u8bf4\u660e\uff0c\u5076\u4e0d\u60f3\u88ab\u7f13\u5b58\uff0c\u5219\u4e0d\u4f1a\u88ab\u7f13\u5b58\uff1b<\/li>\n<li>\u5982\u679c\u8bf7\u6c42\u4fe1\u606f\u662f\u9700\u8981\u8ba4\u8bc1\u6216\u8005\u5b89\u5168\u52a0\u5bc6\u7684(\u5982, HTTPS)\uff0c\u76f8\u5e94\u5185\u5bb9\u4e5f\u4e0d\u4f1a\u88ab\u7f13\u5b58\uff1b<\/li>\n<li>\u7f13\u5b58\u5982\u679c\u6709\u4ee5\u4e0b\u8868\u73b0\uff0c\u5219\u8ba4\u4e3a\u662f<em>fresh<\/em>\u65b0\u9c9c\u7684\uff08\u65e0\u9700\u68c0\u67e5\u6e90\u670d\u52a1\u5668\uff0c\u76f4\u63a5\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\uff09\uff1a\n<ul>\n<li>\u542b\u6709\u5b8c\u6574\u7684\u8fc7\u671f\u65f6\u95f4\u548c\u5bff\u547d\u63a7\u5236\u5934\u4fe1\u606f\uff0c\u5e76\u4e14\u5185\u5bb9\u4ecd\u5728\u4fdd\u9c9c\u671f\u5185\uff0c\u6216\u8005<\/li>\n<li>\u7f13\u5b58\u6700\u8fd1\u5df2\u5c55\u73b0\uff0c\u5e76\u4e14\u5728\u4e0d\u4e45\u524d\u4fee\u6539\u3002<\/li>\n<\/ul>\n<p>\u5219\u5185\u5bb9\u7f13\u5b58\u76f4\u53d6\uff0c\u7ed5\u8fc7\u6e90\u670d\u52a1\u5668\u3002<\/p>\n<\/li>\n<li>\u82e5\u5185\u5bb9\u9648\u65e7\uff0c\u5219\u4f1a\u8981\u6c42\u6e90\u670d\u52a1\u5668\u505a\u9a8c\u8bc1<em> validate <\/em>\uff0c\u6216\u8005\u544a\u8bc9\u7f13\u5b58\u5176\u62f7\u8d1d\u526f\u672c\u662f\u5426\u662fOK\u7684\u3002<\/li>\n<li>\u7279\u5b9a\u60c5\u51b5\u4e0b\u2014\u2014\u4f8b\u5982\uff0c\u65ad\u7f51\u4e86\uff0c\u4e4b\u524d\u6709\u8fc7\u7684\u54cd\u5e94\u7f13\u5b58\u76f4\u53d6\u800c\u4e0d\u68c0\u67e5\u6e90\u670d\u52a1\u5668\u3002<\/li>\n<\/ol>\n<p>\u54cd\u5e94\u5982\u679c\u6ca1\u6709\u7c7b\u4f3c<em>ETag<\/em>\u6216<em>Last-Modified<\/em>\u5934\u8fd9\u6837\u7684\u6821\u9a8c\u5668\uff0c\u4e5f\u6ca1\u6709\u660e\u786e\u7684\u66f4\u65b0\u4fe1\u606f\uff0c\u901a\u5e38\uff08\u5e76\u4e0d\u7edd\u5bf9\uff09\u8ba4\u4e3a\u662f\u4e0d\u53ef\u7f13\u5b58\u7684\u3002<\/p>\n<p>\u603b\u800c\u8a00\u4e4b\uff0c<em><strong>\u65b0\u9c9c\u5ea6<\/strong>freshness<\/em>\u548c<em><strong>\u6821\u9a8c<\/strong>validation<\/em>\u662f\u786e\u5b9a\u7f13\u5b58\u5185\u5bb9\u662f\u5426\u53ef\u7528\u7684\u6700\u91cd\u8981\u9014\u5f84\u3002\u5982\u679c\u8981\u5c55\u793a\u7684\u8db3\u591f\u65b0\uff0c\u76f4\u63a5\u7f13\u5b58\u53d6\uff1b\u5982\u679c\u68c0\u6d4b\u53d1\u73b0\u5c55\u793a\u5185\u5bb9\u5e76\u672a\u53d8\u5316\uff0c\u5219\u4e0d\u4f1a\u518d\u6765\u4e00\u6b21\u5b8c\u6574\u7684\u4f20\u8f93\u3002<\/p>\n<h3 id=\"CONTROL\">\u5982\u4f55\u63a7\u5236\u7f13\u5b58\u548c\u4e0d\u7f13\u5b58<\/h3>\n<p>\u6709\u5f88\u591a\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u8bbe\u8ba1\u5e08\u548c\u7f51\u7ad9\u7ba1\u7406\u5458\u8c03\u6574\u670d\u52a1\u5668\u7f13\u5b58\u7f51\u7ad9\u7684\u65b9\u5f0f\uff0c\u8fd9\u4e5f\u8bb8\u9700\u8981\u4f60\u4eb2\u81ea\u52a8\u624b\u5bf9\u670d\u52a1\u5668\u7684\u914d\u7f6e\u8fdb\u884c\u4e00\u4e9b\u8c03\u6574\uff0c\u4f46\u7edd\u5bf9\u503c\u5f97\u3002\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u5de5\u5177\u8bf7\u53c2\u8003\u672c\u6587\u540e\u9762\u7684\u7ae0\u8282\u3002<\/p>\n<p><strong>HTML Meta\u6807\u7b7e vs. HTTP\u5934\u4fe1\u606f<\/strong><br \/>HTML\u91cd\u6784\u4eba\u5458\u53ef\u4ee5\u5728\u6587\u6863\u7684<code>&lt;head&gt;<\/code>\u4e2d\u6dfb\u52a0\u6807\u7b7e\u8fdb\u884c\u63cf\u8ff0\u3002\u8fd9\u4e9b<em>meta<\/em>\u6807\u7b7e\u901a\u5e38\u7528\u6765\u6807\u8bb0\u4e0d\u53ef\u7f13\u5b58\u6216\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n<p>Meta\u6807\u7b7e\u4f7f\u7528\u7b80\u5355\uff0c\u4f46\u6548\u679c\u4e00\u822c\u3002\u56e0\u4e3a\u53ea\u88ab\u5c11\u6570\u51e0\u4e2a\u6d4f\u89c8\u5668\u5ba0\u5e78\uff0c\u800c\u4ee3\u7406\u7f13\u5b58\u57fa\u672c\u4e0a\u5c31\u4e0d\u8bbf\u95eeHTML\u6587\u6863\u3002\u5c3d\u7ba1\u6211\u4eec\u53ef\u4ee5\u5728\u9875\u9762\u4e0a\u8bd5\u56fe\u6dfb\u52a0<code>no-cache<\/code> meta\u6807\u7b7e\u8ba9\u9875\u9762\u4e00\u76f4\u662f\u6700\u65b0\u7684\uff0c\u4f46\u5176\u5b9e\u6ca1\u5fc5\u8981\u3002<\/p>\n<p class=\"right_exp\">\u5982\u679c\u4f60\u7684\u7f51\u7ad9\u6258\u7ba1\u5728ISP\u6216\u8005\u4e3b\u673a\u6258\u7ba1\u5546\u90a3\u91cc\uff0c\u5e76\u4e14\u4ed6\u4eec\u6ca1\u6709\u8d4b\u4e88\u60a8\u4efb\u610f\u8bbe\u7f6eHTTP\u5934\u4fe1\u606f\u7684\u80fd\u529b(\u6bd4\u5982Expires\u548cCache-Control)\uff0c\u4f60\u8981\u6295\u8bc9\u4e89\u53d6\uff0c\u56e0\u4e3a\u5728\u4f60\u7684\u5de5\u4f5c\u4e2d\u8fd9\u4e9b\u662f\u5fc5\u987b\u7684\u3002<\/p>\n<p>\u53e6\u5916\u4e00\u65b9\u9762\uff1a <em>HTTP\u5934<\/em>\u4fe1\u606f\u53ef\u4ee5\u8ba9\u4f60\u5bf9\u6d4f\u89c8\u5668\u548c\u4ee3\u7406\u670d\u52a1\u5668\u5982\u4f55\u5904\u7406\u4f60\u7684\u526f\u672c\u8fdb\u884c\u66f4\u591a\u7684\u63a7\u5236\u3002\u4ed6\u4eec\u5728HTML\u4ee3\u7801\u4e2d\u662f\u770b\u4e0d\u89c1\u7684\uff0c\u4e00\u822c\u7531Web\u670d\u52a1\u5668\u81ea\u52a8\u751f\u6210\u3002\u4f46\u662f\uff0c\u6839\u636e\u4f60\u4f7f\u7528\u7684\u670d\u52a1\u5668\uff0c\u4f60\u53ef\u4ee5\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u8fdb\u884c\u63a7\u5236\u3002\u5728\u4e0b\u6587\u4e2d\uff1a\u4f60\u5c06\u770b\u5230\u4e00\u4e9b\u6709\u8da3\u7684HTTP\u5934\u4fe1\u606f\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u4f60\u7684\u7ad9\u70b9\u4e0a\u5e94\u7528\u90e8\u7f72\u8fd9\u4e9b\u7279\u6027\u3002<\/p>\n<p>HTTP\u5934\u4fe1\u606f\u53d1\u9001\u5728HTML\u4ee3\u7801\u4e4b\u524d\uff0c\u53ea\u80fd\u88ab\u6d4f\u89c8\u5668\u548c\u4e00\u4e9b\u4e2d\u95f4\u7f13\u5b58\u80fd\u770b\u5230\uff0c\u4e00\u4e2a\u5178\u578b\u7684HTTP 1.1\u534f\u8bae\u8fd4\u56de\u7684\u5934\u4fe1\u606f\u770b\u4e0a\u53bb\u50cf\u8fd9\u6837\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>HTTP\/1.1 200 OK\nDate: Fri, 30 Oct 1998 13:19:41 GMT\nServer: Apache\/1.3.3 (Unix)\nCache-Control: max-age=3600, must-revalidate\nExpires: Fri, 30 Oct 1998 14:19:41 GMT\nLast-Modified: Mon, 29 Jun 1998 02:28:12 GMT\nETag: \"3e86-410-3596fbbc\"\nContent-Length: 1040\nContent-Type: text\/html<\/pre>\n<\/div>\n<p>\u5934\u4fe1\u606f\u7a7a\u4e00\u884c\u540e\u662fHTML\u4ee3\u7801\u7684\u8f93\u51fa\uff0c\u5173\u4e8e<a href=\"#IMP-SERVER\">\u5982\u4f55\u8bbe\u7f6e<\/a>HTTP\u5934\u4fe1\u606f\u8bf7\u53c2\u8003\u5bf9\u5e94\u7ae0\u8282\u3002<\/p>\n<p><strong id=\"PRAGMA\">Pragma HTTP\u5934\u4fe1\u606f\uff08\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u4e0d\u8d77\u4f5c\u7528\uff09<\/strong><br \/>\u5f88\u591a\u4eba\u8ba4\u4e3a\u5728HTTP\u5934\u4fe1\u606f\u4e2d\u8bbe\u7f6e\u4e86<code>Pragma: no-cache<\/code>\u540e\u4f1a\u8ba9\u5185\u5bb9\u65e0\u6cd5\u88ab\u7f13\u5b58\u3002\u4f46\u4e8b\u5b9e\u5e76\u975e\u5982\u6b64\uff1aHTTP\u7684\u89c4\u8303\u4e2d\uff0c\u54cd\u5e94\u578b\u5934\u4fe1\u606f\u6ca1\u6709\u4efb\u4f55\u5173\u4e8ePragma\u5c5e\u6027\u7684\u8bf4\u660e\uff0c\u53ea\u8bf4\u660e\u4e86\u8bf7\u6c42\u5934\u4fe1\u606f\uff08\u6d4f\u89c8\u5668\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u7684\u5934\u4fe1\u606f\uff09\u4e2d\u7684Pragma\u5c5e\u6027\u3002\u867d\u7136\u6709\u5c11\u90e8\u5206\u7f13\u5b58\u4f1a\u4e70\u8d26\uff0c\u4f46\u5927\u90e8\u5206\u65e0\u89c6\uff0c\u4f7f\u7528Pragma\u6ca1\u4f5c\u7528\u3002\u82e5\u8981\u4f7f\u7528\uff0c\u8bd5\u8bd5\u4e0b\u9762\u7684\u5934\u4fe1\u606f\u3002<\/p>\n<p><strong id=\"EXPIRES\">\u4f7f\u7528Expires HTTP\u5934\u4fe1\u606f\u63a7\u5236\u4e0d\u8fc7\u671f<\/strong><br \/>Expires HTTP\u5934\u662f\u63a7\u5236\u7f13\u5b58\u7684\u57fa\u672c\u624b\u6bb5\uff0cExpires\u7684\u4e2d\u6587\u610f\u601d\u662f\u201c\u6709\u6548\u671f\u201d\uff0c\u663e\u7136\uff0c\u5c31\u662f\u544a\u8bc9\u6d4f\u89c8\u5668\u7f13\u5b58\u7684\u6709\u6548\u671f\u3002\u5982\u679c\u8fc7\u671f\uff0c\u7f13\u5b58\u4f1a\u68c0\u67e5\u6e90\u670d\u52a1\u5668\u4ee5\u786e\u5b9a\u6587\u4ef6\u662f\u5426\u6539\u53d8\u4e86\u3002Expires\u5934\u51e0\u4e4e\u6bcf\u4e2a\u7f13\u5b58\u90fd\u652f\u6301\u3002<\/p>\n<p>\u5927\u90e8\u5206\u7684\u670d\u52a1\u5668\u5141\u8bb8\u4f60\u4ee5\u591a\u79cd\u65b9\u5f0f\u8bbe\u7f6eExpires\u54cd\u5e94\u5934\u3002\u901a\u5e38\uff0c\u4ed6\u4eec\u5141\u8bb8\u8bbe\u7f6e\u4e00\u4e2a\u7edd\u5bf9\u8fc7\u671f\u65f6\u95f4\uff0c\u7136\u540e\u5bf9\u6bd4\u6700\u540e\u4e00\u6b21\u8bbf\u95ee\u7684\u65f6\u5019\u6216\u8005\u6700\u540e\u4e00\u6b21\u6587\u6863\u4fee\u6539\u7684\u65f6\u5019\u51b3\u5b9a\u5ba2\u6237\u7aef\u5185\u5bb9\u7684\u83b7\u53d6\u65b9\u5f0f\u3002<\/p>\n<p>\u5bf9\u4e8e\u9759\u6001\u56fe\u7247\uff08\u5982\u5bfc\u822a\u6216\u6309\u94ae\u7684\u56fe\u7247\uff09\u800c\u8a00\uff0cExpires\u5934\u4fe1\u606f\u662f\u76f8\u5f53\u6709\u7528\u7684\uff0c\u56e0\u4e3a\u56fe\u7247\u4e0d\u600e\u4e48\u4fee\u6539\uff0c\u60a8\u53ef\u4ee5\u7ed9\u56fe\u7247\u8bbe\u7f6e\u4e00\u4e2a\u76f8\u5f53\u957f\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8fd9\u56de\u8ba9\u4f60\u7684\u7528\u6237\u611f\u89c9\u7f51\u7ad9\u53d8\u5feb\u4e86\u3002Expires\u5bf9\u4e8e\u63a7\u5236\u6709\u6539\u53d8\u89c4\u5f8b\u7684\u7f51\u9875\u4e5f\u5f88\u6709\u7528\uff0c\u4f8b\u5982\uff1a\u4f60\u6709\u4e00\u4e2a\u65b0\u95fb\u805a\u5408\u9875\u9762\uff0c\u6bcf\u5929\u65e9\u4e0a6\u70b9\u949f\u51c6\u65f6\u66f4\u65b0\uff0c\u60a8\u53ef\u4ee5\u8bbe\u7f6e\u7f13\u5b58\u7684\u8fc7\u671f\u65f6\u95f4\u4e5f\u662f\u8fd9\u4e2a\u70b9\uff0c\u4e8e\u662f\u7f13\u5b58\u5c31\u53ef\u4ee5\u5f88\u806a\u660e\u5730\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u8be5\u53bb\u91cd\u8f7d\u65b0\u7684\u5185\u5bb9\uff0c\u4ec0\u4e48\u65f6\u5019\u7761\u5927\u89c9\u3002<\/p>\n<p>Expires\u5934\u552f\u4e00\u7684\u6709\u6548\u503c\u662fHTTP\u65f6\u95f4\uff0c\u5176\u4ed6\u503c\u90fd\u4f1a\u88ab\u8ba4\u4e3a\u662f\u201c\u524d\u7537\u53cb\u524d\u5973\u53cb\u201d\u4e4b\u7c7b\uff0c\u4e0d\u4f1a\u53bb\u7f13\u5b58\u7684\u3002\u6ce8\u610f\uff1a\u65f6\u95f4\u662f\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\uff0c\u800c\u4e0d\u662f\u672c\u5730\u65f6\u95f4\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>Expires: Fri, 30 Oct 1998 14:19:41 GMT<\/pre>\n<\/div>\n<p class=\"right_exp\" style=\"width:400px;\">\u663e\u7136\uff0c\u5982\u679c\u4f60\u8981\u4f7f\u7528Expires\u5934\uff0c\u786e\u4fdd\u4f60\u7684Web\u670d\u52a1\u5668\u65f6\u95f4\u7684\u51c6\u5907\u5c31\u975e\u5e38\u91cd\u8981\u4e86\u3002\u4f7f\u7528\u7f51\u7edc\u65f6\u95f4\u534f\u8bae(Network Time Protocol &#8211; NTP)\u4e0d\u5931\u4e3a\u4e00\u4e2a\u53f7\u65b9\u6cd5\u3002\u5982\u679c\u4f60\u7684\u8eab\u8fb9\u6709\u672c\u5730\u7cfb\u7edf\u7ba1\u7406\u5458\uff0c\u53ef\u4ee5\u5411\u4ed6\u54a8\u8be2\uff0c\u6216\u8005\u67e5\u770b\u4e0b\u9762\u7684\u767e\u79d1<sup>Add<\/sup> <sup title=\"\u67e5\u770b\u5bf9\u5e94\u7684\u8d1d\u58f3\u8bf4\u660e\"><a href=\"#MARK6\">\u2465<\/a><\/sup>\u3002<\/p>\n<p>\u5c3d\u7ba1Expires\u5934\u5f88\u6709\u7528\uff0c\u4f46\u5b83\u6709\u4e00\u5b9a\u7684\u5c40\u9650\u6027\u3002\u9996\u5148\uff0c\u56e0\u4e3a\u7275\u626f\u5230\u65f6\u95f4\uff0cWeb\u670d\u52a1\u5668\u7aef\u7684\u65f6\u949f\u5fc5\u987b\u548c\u7f13\u5b58\u7684\u540c\u6b65\uff0c\u5426\u5219\u5f88\u53ef\u80fd\u5b9e\u73b0\u4e0d\u4e86\u9884\u671f\u7684\u7ed3\u679c\u2014\u2014\u7f13\u5b58\u628a\u524d\u5973\u53cb\u5f53\u521d\u73b0\u5973\u53cb\uff0c\u628a\u73b0\u5973\u53cb\u5f53\u4f5c\u8fc7\u53bb\u5f0f\u2014\u2014\u90a3\u5c31\u60b2\u5267\u4e86\u3002<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/195.gif\" align=\"absmiddle\"><\/p>\n<p>\u53e6\u5916\u4e00\u4e2a\u95ee\u9898\u662f\uff0c\u4f60\u5f88\u5bb9\u6613\u5fd8\u8bb0\u7ed9\u67d0\u5185\u5bb9\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u7279\u5b9a\u65f6\u95f4\uff0c\u5982\u679c\u8fd4\u56de\u5185\u5bb9\u7684\u65f6\u5019\u6ca1\u6709\u66f4\u65b0\u8fd9\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u5219\u6bcf\u4e2a\u8bf7\u6c42\u90fd\u662f\u4e0a\u8bbf\u5230\u670d\u52a1\u5668\uff0c\u53cd\u800c\u589e\u52a0\u4e86\u8d1f\u8f7d\u548c\u54cd\u5e94\u65f6\u95f4\u3002<\/p>\n<blockquote id=\"MARK6\"><p>\u2465\u7f51\u7edc\u65f6\u95f4\u534f\u8bae(NTP): \u4ee5\u5c01\u5305\u4ea4\u6362\u628a\u4e24\u53f0\u7535\u8111\u7684\u65f6\u949f\u540c\u6b65\u5316\u7684\u7f51\u7edc\u534f\u8bae\u3002NTP\u4f7f\u7528UDP\u7aef\u53e3123\u4f5c\u4e3a\u4f20\u8f93\u5c42\u3002\u5b83\u662f\u7528\u4f5c\u62b5\u9500\u53ef\u53d8\u5ef6\u8fdf\u7684\u5f71\u54cd\u3002NTP\u662f\u4ecd\u5728\u4f7f\u7528\u4e2d\u7684\u6700\u53e4\u8001\u7684\u7f51\u7edc\u534f\u8bae\u4e4b\u4e00\uff08\u57281985\u5e74\u524d\u5f00\u59cb\uff09\u3002NTP\u6700\u521d\u7531\u5fb7\u62c9\u74e6\u5dde\u5927\u5b66\u7684Dave Mills\u8bbe\u8ba1\uff0c\u4ed6\u4e0e\u4e00\u7fa4\u5fd7\u613f\u8005\u4ecd\u5728\u7ef4\u62a4NTP\u3002<\/p><\/blockquote>\n<p><strong id=\"CACHE-CONTROL\">Cache-Control\uff08\u7f13\u5b58\u63a7\u5236\uff09HTTP\u5934\u4fe1\u606f<\/strong><br \/>HTTP 1.1\u5f15\u5165\u4e86\u65b0\u7684\u5934\u4fe1\u606f\uff1a<code>Cache-Control<\/code>\u54cd\u5e94\u5934\u4fe1\u606f\uff0c\u8ba9\u7f51\u7ad9\u7684\u53d1\u5e03\u8005\u53ef\u4ee5\u66f4\u5168\u9762\u7684\u63a7\u5236\u4ed6\u4eec\u7684\u5185\u5bb9\uff0c\u66f4\u597d\u5730\u5904\u7406Expires\u7684\u4e9b\u9650\u5236\u3002<code>Cache-Control<\/code>\u6709\u7528\u7684\u54cd\u5e94\u5934\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>max-age=[\u79d2]<\/strong>\uff1a\u8868\u793a\u5728\u8fd9\u4e2a\u65f6\u95f4\u8303\u56f4\u5185\u7f13\u5b58\u662f\u65b0\u9c9c\u7684\u65e0\u9700\u66f4\u65b0\u3002\u7c7b\u4f3cExpires\u65f6\u95f4\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u65f6\u95f4\u662f\u76f8\u5bf9\u7684\uff0c\u800c\u4e0d\u662f\u7edd\u5bf9\u7684\u3002\u4e5f\u5c31\u662f\u67d0\u6b21\u8bf7\u6c42\u6210\u529f\u540e\u591a\u5c11\u79d2\u5185\u7f13\u5b58\u662f\u65b0\u9c9c\u7684\u3002<\/li>\n<li><strong>s-maxage=[\u79d2]<\/strong>\uff1a\u7c7b\u4f3c<code>max-age<\/code>, \u9664\u4e86\u4ec5\u5e94\u7528\u4e8e\u5171\u4eab\u7f13\u5b58\uff08\u5982\u4ee3\u7406\uff09\u3002<\/li>\n<li><strong>public<\/strong>\uff1a\u6807\u8bb0\u8ba4\u8bc1\u7684\u54cd\u5e94\u624d\u80fd\u591f\u88ab\u7f13\u5b58\u3002\u4e00\u822c\u800c\u8a00\uff0c\u9700\u8981\u8ba4\u8bc1HTTP\u8bf7\u6c42\u5185\u5bb9\u4f1a\u81ea\u52a8\u79c1\u6709\u5316\uff08\u4e0d\u4f1a\u88ab\u7f13\u5b58<sup>Add<\/sup>\uff09\u3002<\/li>\n<li><strong>private<\/strong><sup>N<\/sup>\uff1a\u5141\u8bb8\u7f13\u5b58\u4e13\u95e8\u4e3a\u67d0\u4e00\u4e2a\u7528\u6237\u5b58\u50a8\u54cd\u5e94\uff0c\u6bd4\u65b9\u8bf4\u5728\u6d4f\u89c8\u5668\u4e2d\uff1b\u5171\u4eab\u7f13\u5b58\u4e00\u822c\u4e0d\u4f1a\uff0c\u4f8b\u5982\u5728\u4ee3\u7406\u4e2d\u3002<\/li>\n<li><strong>no-cache<\/strong>\uff1a\u6bcf\u6b21\u5728\u91ca\u653e\u7f13\u5b58\u526f\u672c\u4e4b\u524d\u90fd\u5f3a\u5236\u53d1\u9001\u8bf7\u6c42\u7ed9\u6e90\u670d\u52a1\u5668\u8fdb\u884c\u9a8c\u8bc1\uff0c\u8fd9\u5728\u786e\u4fdd\u8ba4\u8bc1\u6709\u6548\u6027\u4e0a\u5f88\u7ba1\u7528\uff08\u548c<code>public<\/code>\u7ed3\u5408\u4f7f\u7528\uff09\u6216\u8005\u4fdd\u8bc1\u5185\u5bb9\u5fc5\u987b\u662f\u5373\u65f6\u7684\uff0c\u4e0d\u5f97\u65e0\u89c6\u7f13\u5b58\u7684\u6240\u6709\u4f18\u70b9\uff0c\u5982\u56fd\u5185\u7684\u5fae\u535a\u3001twitter\u7b49\u7684\u5237\u65b0\u663e\u793a<sup>Add<\/sup>\u3002<\/li>\n<li><strong>no-store<\/strong>\uff1a\u5f3a\u5236\u7f13\u5b58\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\u90fd\u4e0d\u8981\u4fdd\u7559\u4efb\u4f55\u526f\u672c\u3002<\/li>\n<li><strong>must-revalidate<\/strong>\uff1a\u544a\u8bc9\u7f13\u5b58\uff0c\u6211\u7ed9\u4f60\u51c6\u5907\u4e86\u4e00\u4e9b\u5173\u4e8e\u65b0\u9c9c\u5ea6\u7684\u4fe1\u606f\uff0c\u5728\u8868\u73b0\u7684\u65f6\u5019\u8981\u4e25\u683c\u9075\u5faa\u4e4b\u3002HTTP\u5141\u8bb8\u7f13\u5b58\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\u8fd4\u56de\u8fc7\u671f\u6570\u636e\uff0c\u6307\u5b9a\u4e86\u8fd9\u4e2a\u5c5e\u6027\uff0c\u76f8\u5bf9\u4e8e\u544a\u8bc9\u7f13\u5b58\uff0c\u4f60\u4e2b\u5fc5\u987b\u4e25\u683c\u9075\u5faa\u6211\u7684\u89c4\u5219\u3002<\/li>\n<li><strong>proxy-revalidate<\/strong>\uff1a\u7c7b\u4f3c<code>must-revalidate<\/code>\uff0c\u9664\u4e86\u53ea\u80fd\u5e94\u7528\u4e8e\u4ee3\u7406\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u677f\u6817\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>Cache-Control: max-age=3600, must-revalidate<\/pre>\n<\/div>\n<p>\u5982\u679c<code>Cache-Control<\/code>\u548c<code>Expires<\/code>\u540c\u65f6\u5b58\u5728\uff0c<code>Cache-Control<\/code>\u8bf4\u4e86\u7b97<sup>N<\/sup>\u3002\u5982\u679c\u4f60\u6253\u7b97\u4f7f\u7528<code>Cache-Control<\/code>\u5934\uff0c\u4f60\u5e94\u8be5\u597d\u597d\u770b\u770b&#8221;<a href=\"http:\/\/www.ietf.org\/rfc\/rfc2616.txt\">HTTP 1.1 \u89c4\u8303<\/a>&#8220;, \u8be6\u89c1<a href=\"#REF\">\u53c2\u8003\u6587\u7ae0\u4ee5\u53ca\u62d3\u5c55\u9605\u8bfb<\/a>\u3002<\/p>\n<p><strong id=\"VALIDATE\">\u9a8c\u8bc1\u5668\u548c\u9a8c\u8bc1<\/strong><br \/>\u5728<a href=\"#WORK\">\u7f13\u5b58\u5982\u4f55\u5de5\u4f5c<\/a>\u8fd9\u6bb5\u8bd1\u6587\u4e2d\uff0c\u6211\u4eec\u8bf4\u8fc7\uff0c\u670d\u52a1\u5668\u4ee5\u53ca\u7f13\u5b58\u901a\u8fc7\u9a8c\u8bc1\u6765\u5224\u65ad\u5185\u5bb9\u662f\u5426\u6539\u53d8\uff0c\u5728\u4e0d\u786e\u5b9a\u5185\u5bb9\u662f\u5426\u8fc7\u671f\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u907f\u514d\u672c\u5730\u5df2\u7ecf\u5b58\u5728\u526f\u672c\u7684\u65f6\u5019\u4e0b\u8f7d\u6574\u4e2a\u5185\u5bb9\u3002<\/p>\n<p>\u9a8c\u8bc1\u5668\u662f\u5f88\u91cd\u8981\u7684\uff0c\u5982\u679c\u4e00\u4e2a\u90fd\u6ca1\u6709\uff0c\u540c\u65f6\u6ca1\u6709\u53ef\u7528\u7684\u65b0\u9c9c\u5ea6\u4fe1\u606f(<code>Expires<\/code>\u6216<code>Cache-Control<\/code>)\uff0c\u7f13\u5b58\u4e00\u70b9\u513f\u90fd\u4e0d\u4f1a\u5b58\u50a8\u5185\u5bb9\u3002<\/p>\n<p>\u6700\u5e38\u89c1\u7684\u9a8c\u8bc1\u662f\u901a\u8fc7<code>Last-Modified<\/code>\u5934\u4fe1\u606f\u901a\u4fe1\u786e\u5b9a\u6587\u6863\u6700\u540e\u7684\u4fee\u6539\u65f6\u95f4\uff0c\u5982\u679c\u7f13\u5b58\u6709\u5185\u5bb9\u5b58\u50a8\uff0c\u4f1a\u5305\u542b<code>Last-Modified<\/code>\u4fe1\u606f\u7684\uff0c\u8f85\u52a9<code>If-Modified-Since<\/code>\u8bf7\u6c42\uff0c\u6211\u4eec\u53ef\u4ee5\u8be2\u95ee\u670d\u52a1\u5668\u5185\u5bb9\u662f\u5426\u6539\u53d8\u4e86\u3002<\/p>\n<p>HTTP 1.1\u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7684\u9a8c\u8bc1\u5668\uff0c\u79f0\u4e3a<code><em>Etag<\/em><\/code><sup title=\"\u767e\u79d1\u67e5\u770b\"><a href=\"#MARK7\">\u2466<\/a><\/sup>. <code>Etag<\/code>\u662f\u6bcf\u6b21\u5c55\u73b0\u5185\u5bb9\u6539\u53d8\u65f6\u5019\u7531\u670d\u52a1\u5668\u751f\u6210\u7684\u552f\u4e00\u6807\u8bc6\u7b26\uff0c\u7531\u4e8e\u670d\u52a1\u5668\u63a7\u5236<code>ETag<\/code>\u5982\u4f55\u751f\u6210\uff0c\u5f53\u7f13\u5b58\u53d1\u8d77<code>If-None-Match<\/code>\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u5982\u679c<code>Etag<\/code>\u5339\u914d\uff0c\u5c31\u53ef\u4ee5\u786e\u5b9a\u5c55\u793a\u5185\u5bb9\u5176\u5b9e\u662f\u4e00\u6837\u7684\u3002<\/p>\n<blockquote id=\"MARK7\"><p>\u2466Etag: HTTP\u534f\u8bae\u89c4\u683c\u8bf4\u660e\u5b9a\u4e49ETag\u4e3a&#8221;\u88ab\u8bf7\u6c42\u53d8\u91cf\u7684\u5b9e\u4f53\u503c&#8221;\u3002\u53e6\u4e00\u79cd\u8bf4\u6cd5\u662f\uff0cETag\u662f\u4e00\u4e2a\u53ef\u4ee5\u4e0eWeb\u8d44\u6e90\u5173\u8054\u7684\u8bb0\u53f7\uff08token\uff09\u3002\u5178\u578b\u7684Web\u8d44\u6e90\u53ef\u4ee5\u4e00\u4e2aWeb\u9875\uff0c\u4f46\u4e5f\u53ef\u80fd\u662fJSON\u6216XML\u6587\u6863\u3002\u670d\u52a1\u5668\u5355\u72ec\u8d1f\u8d23\u5224\u65ad\u8bb0\u53f7\u662f\u4ec0\u4e48\u53ca\u5176\u542b\u4e49\uff0c\u5e76\u5728HTTP\u54cd\u5e94\u5934\u4e2d\u5c06\u5176\u4f20\u9001\u5230\u5ba2\u6237\u7aef\uff0c\u4ee5\u4e0b\u662f\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u683c\u5f0f\uff1aETag:&#8221;50b1c1d4f775c61:df3&#8243;\u5ba2\u6237\u7aef\u7684\u67e5\u8be2\u66f4\u65b0\u683c\u5f0f\u662f\u8fd9\u6837\u7684\uff1aIf-None-Match : W \/ &#8220;50b1c1d4f775c61:df3&#8243;\u5982\u679cETag\u6ca1\u6539\u53d8\uff0c\u5219\u8fd4\u56de\u72b6\u6001304\u7136\u540e\u4e0d\u8fd4\u56de\uff0c\u8fd9\u4e5f\u548cLast-Modified\u4e00\u6837\u3002\u6d4b\u8bd5Etag\u4e3b\u8981\u5728\u65ad\u70b9\u4e0b\u8f7d\u65f6\u6bd4\u8f83\u6709\u7528\u3002<\/p><\/blockquote>\n<p>\u51e0\u4e4e\u6240\u6709\u7684\u7f13\u5b58\u4f7f\u7528<code>Last-Modified<\/code>\u65f6\u95f4\u4f5c\u4e3a\u9a8c\u8bc1\u5668\uff0c<code>Etag<\/code>\u9a8c\u8bc1\u4e5f\u5f00\u59cb\u53d8\u5f97\u6d41\u884c\u3002<\/p>\n<p>\u6240\u6709\u65b0\u4e00\u4ee3\u7684Web\u670d\u52a1\u5668\u90fd\u5bf9\u9759\u6001\u5185\u5bb9\uff08\u5982\uff1a\u6587\u4ef6\uff09\u81ea\u52a8\u751f\u6210<code>ETag<\/code>\u548c<code>Last-Modified<\/code>\u5934\u4fe1\u606f\uff0c\u800c\u4f60\u4e0d\u5fc5\u505a\u4efb\u4f55\u8bbe\u7f6e\u3002\u4f46\u662f\uff0c\u670d\u52a1\u5668\u5bf9\u4e8e\u52a8\u6001\u5185\u5bb9\uff08\u4f8b\u5982\uff1aCGI, ASP\u6216\u6570\u636e\u5e93\u751f\u6210\u7684\u7f51\u7ad9\uff09\u5e76\u4e0d\u77e5\u9053\u5982\u4f55\u751f\u6210\u8fd9\u4e9b\u4fe1\u606f\uff0c\u53c2\u8003\u4e00\u4e0b<a href=\"#SCRIPT\">\u7f16\u5199\u652f\u6301\u7f13\u5b58\u7684\u811a\u672c<\/a>\u7ae0\u8282\uff1b<\/p>\n<h3 id=\"TIPS\">\u521b\u5efa\u652f\u6301\u7f13\u5b58\u7f51\u7ad9\u7684\u5c0f\u6280\u5de7<\/h3>\n<p>\u9664\u4e86\u4f7f\u7528\u65b0\u9c9c\u5ea6\u4fe1\u606f\u4ee5\u53ca\u9a8c\u8bc1\uff0c\u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u6280\u5de7\u53ef\u4ee5\u8ba9\u4f60\u7f51\u7ad9\u7684\u7f13\u5b58\u66f4\u52a0\u53cb\u597d\uff1a<\/p>\n<ul style=\"margin-top:0;\">\n<li><strong>\u4fdd\u6301URL\u7a33\u5b9a<\/strong>\uff1a\u8fd9\u662f\u7f13\u5b58\u7684\u91d1\u79d1\u7389\u5f8b\uff0c\u5982\u679c\u4f60\u4e3a\u4e0d\u540c\u9875\u9762\uff0c\u4e0d\u540c\u7528\u6237\u6216\u4e0d\u540c\u7f51\u7ad9\u63d0\u4f9b\u76f8\u540c\u7684\u5185\u5bb9\uff0c\u4ed6\u4eec\u5e94\u8be5\u4f7f\u7528\u76f8\u540c\u7684URL. \u8fd9\u662f\u7b80\u5355\u5374\u975e\u5e38\u884c\u4e4b\u6709\u6548\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u4f60\u7684HTML\u4e2d\u7684\u67d0\u4e2a\u5f15\u7528\u5730\u5740\u662f<code>\"\/index.html\"<\/code>, \u5219\u8981\u4e00\u76f4\u4f7f\u7528\u8fd9\u4e2a\u5730\u5740\u3002<\/li>\n<li>\u4e0d\u540c\u5730\u65b9\u7684\u56fe\u7247\u548c\u5176\u4ed6\u5143\u7d20<strong>\u4f7f\u7528\u540c\u4e00\u5e93<\/strong>\u3002<\/li>\n<li><strong>\u5bf9\u4e8e\u4e0d\u7ecf\u5e38\u6539\u53d8\u7684\u56fe\u7247\/\u9875\u9762\u542f\u7528\u7f13\u5b58<\/strong>\uff0c\u901a\u8fc7\u5c06<code>Cache-Control: max-age<\/code>\u5934\u4fe1\u606f\u7684\u503c\u8bbe\u5927\u4e00\u70b9\u3002<\/li>\n<li><strong>\u5bf9\u4e8e\u5b9a\u671f\u66f4\u65b0\u7684\u5185\u5bb9<\/strong>\u901a\u8fc7\u6307\u5b9a<code>max-age<\/code>\u6216\u8fc7\u671f\u65f6\u95f4\u5b9e\u73b0\u7f13\u5b58\u3002<\/li>\n<li><strong>\u5982\u679c\u8d44\u6e90\u6539\u53d8\u4e86\uff08\u5c24\u5176\u4e0b\u8f7d\u6587\u4ef6\uff09\uff0c\u6539\u53d8\u5176\u540d\u5b57<\/strong>\u3002\u7531\u4e8e\u4e00\u822c\u8fd9\u79cd\u8d44\u6e90\u4f1a\u6709\u5f88\u957f\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u800c\u670d\u52a1\u5668\u4e0a\u4e00\u76f4\u662f\u6b63\u786e\u7684\u7248\u672c\uff1b\u56e0\u6b64\uff0c\u94fe\u63a5\u8fd9\u4e2a\u4e0b\u8f7d\u8d44\u6e90\u7684\u9875\u9762\u9700\u8981\u8981\u6bd4\u8f83\u77ed\u7684\u8fc7\u671f\u65f6\u95f4\uff08<span class=\"s\">\/\/zxx: \u6211\u53f8\u9875\u97625\u5206\u949f\u8fc7\u671f<\/span>\uff09\u3002\u5426\u5219\uff0c\u4f1a\u51fa\u73b0\u670d\u52a1\u5668\u7684\u8d44\u6e90\u662f\u65b0\u7684\uff0c\u4f46\u9875\u9762\u88ab\u7f13\u5b58\u4e86\uff0c\u5176\u4e2d\u7684\u94fe\u63a5\u5730\u5740\u8fd8\u662f\u65e7\u7684\uff0c\u5c31\u4f1a\u51fa\u73b0\u65b0\u65e7\u7248\u672c\u51b2\u7a81\u7684\u53ef\u80fd<sup>Add<\/sup>\u3002<\/li>\n<li><strong>\u4e07\u4e0d\u5f97\u5df2\u4e0d\u8981\u53d8\u52a8\u6587\u4ef6<\/strong>\uff1a\u5426\u5219\u4f60\u8981\u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684<code>Last-Modified<\/code>\u503c\u3002\u53e6\u5916\uff0c\u5f53\u4f60\u66f4\u65b0\u7ad9\u70b9\u7684\u65f6\u5019\uff0c\u53ea\u8981\u4e0a\u4f20\u6539\u52a8\u7684\u90a3\u4e9b\u6587\u4ef6\uff0c\u800c\u4e0d\u8981\u628a\u6574\u4e2a\u7ad9\u70b9\u90fd\u8986\u76d6\u8fc7\u53bb\u3002<\/li>\n<li><strong>Cookie\u80fd\u4e0d\u7528\u5c31\u4e0d\u7528<\/strong>\uff1aCookie\u96be\u4ee5\u88ab\u7f13\u5b58\uff0c\u4e14\u5927\u591a\u60c5\u5883\u4e0b\u662f\u6ca1\u6709\u5fc5\u8981\u7684\u3002\u5982\u679c\u4f60\u975e\u5f97\u4f7f\u7528Cookie\uff0c\u5efa\u8bae\u7528\u5728\u52a8\u6001\u9875\u9762\u4e0a\u3002<\/li>\n<li><strong>\u51cf\u5c11SSL<sup title=\"\u67e5\u770b\u89e3\u91ca\" style=\"font-weight:normal;\"><a href=\"#MARK8\">\u2467<\/a><\/sup>\u7684\u4f7f\u7528<\/strong>\uff1a\u56e0\u4e3a\u5171\u4eab\u7f13\u5b58\u4e0d\u80fd\u5b58\u50a8\u8ba4\u8bc1\u9875\u9762\uff0c\u53ea\u5728\u5fc5\u8981\u7684\u65f6\u5019\u4f7f\u7528\uff0c\u5e76\u4e14\u5728SSL\u9875\u9762\u4e0a\u51cf\u5c11\u56fe\u7247\u7684\u4f7f\u7528\u3002<\/li>\n<li><strong>\u4f7f\u7528<a href=\"http:\/\/redbot.org\/\">REDbot<\/a><sup title=\"\u67e5\u770b\u89e3\u91ca\" style=\"font-weight:normal;\"><a href=\"#MARK9\">\u2468<\/a><\/sup>\u68c0\u67e5\u4f60\u7684\u7f51\u7ad9<\/strong>\uff1a\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5e94\u7528\u672c\u6587\u6240\u4ecb\u7ecd\u7684\u4e00\u4e9b\u6982\u5ff5\u3002<\/li>\n<\/ul>\n<blockquote id=\"MARK8\"><p>\u2467 SSL\uff1a\u5168\u79f0Secure Socket Layer &#8211;  \u5b89\u5168\u5957\u63a5\u5c42\uff0c\u4e3aNetscape\u6240\u7814\u53d1\uff0c\u7528\u4ee5\u4fdd\u969c\u5728Internet\u4e0a\u6570\u636e\u4f20\u8f93\u4e4b\u5b89\u5168\uff0c\u5229\u7528\u6570\u636e\u52a0\u5bc6(Encryption)\u6280\u672f\uff0c\u53ef\u786e\u4fdd\u6570\u636e\u5728\u7f51\u7edc\u4e0a\u4e4b\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u88ab\u622a\u53d6\u53ca\u7a83\u542c\u3002\u76ee\u524d\u4e00\u822c\u901a\u7528\u4e4b\u89c4\u683c\u4e3a40 bit\u4e4b\u5b89\u5168\u6807\u51c6\uff0c\u7f8e\u56fd\u5219\u5df2\u63a8\u51fa128 bit\u4e4b\u66f4\u9ad8\u5b89\u5168\u6807\u51c6\uff0c\u4f46\u9650\u5236\u51fa\u5883\u3002\u53ea\u89813.0\u7248\u672c\u4ee5\u4e0a\u4e4bI.E.\u6216Netscape\u6d4f\u89c8\u5668\u5373\u53ef\u652f\u6301SSL\u3002<\/p>\n<p>\u2468 REDbot\uff1aREDbot = RED + robot\uff0c\u662f\u4e2a\u673a\u5668\u4eba\uff0c\u68c0\u67e5HTTP\u8d44\u6e90\uff0c\u770b\u4ed6\u4eec\u5982\u4f55\u4f1a\u8868\u73b0\uff0c\u6307\u51fa\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u5e76\u63d0\u51fa\u6539\u8fdb\u5efa\u8bae\u3002\u867d\u7136\u5b83\u5c5e\u4e8eHTTP\u4e00\u81f4\u6027\u6d4b\u8bd5\u4eea\uff0c\u4f46\u5374\u53ef\u4ee5\u627e\u5230\u4e0d\u5c11HTTP\u76f8\u5173\u95ee\u9898\u3002<\/p>\n<\/blockquote>\n<h3 id=\"SCRIPT\">\u7f16\u5199\u652f\u6301\u7f13\u5b58\u7684\u811a\u672c<\/h3>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5927\u591a\u6570\u7684\u811a\u672c\u4e0d\u4f1a\u8fd4\u56de\u9a8c\u8bc1\u5668\uff08<code>Last-Modified<\/code>\u6216<code>Etag<\/code>\u54cd\u5e94\u5934\uff09\u6216\u65b0\u9c9c\u5ea6\u4fe1\u606f\uff08<code>Expires<\/code>\u6216<code>Cache-Control<\/code>\uff09\u3002\u5c3d\u7ba1\u6709\u4e9b\u811a\u672c\u7684\u786e\u662f\u52a8\u6001\u7684\uff08\u610f\u5473\u7740\u6bcf\u6b21\u8bf7\u6c42\u90fd\u6709\u4e0d\u540c\u7684\u54cd\u5e94\uff09\uff0c\u8fd8\u662f\u6709\u5f88\u591a\uff08\u5982\u641c\u7d22\u5f15\u64ce\u6216\u6570\u636e\u5e93\u9a71\u52a8\u7684\uff09\u7f51\u7ad9\u53ef\u4ee5\u4ece\u7f13\u5b58\u4e2d\u53d7\u76ca\u3002<\/p>\n<p>\u4e00\u822c\u6765\u8bb2\uff0c\u5bf9\u4e8e\u540c\u4e00\u4e2a\u8bf7\u6c42\uff08\u65e0\u8bba\u662f\u51e0\u5206\u949f\u8fd8\u662f\u51e0\u5929\u4e4b\u540e\uff09\uff0c\u5982\u679c\u811a\u672c\u4ea7\u751f\u7684\u5185\u5bb9\u662f\u53ef\u91cd\u590d\u7684\uff0c\u5219\u53ef\u4ee5\u7f13\u5b58\u3002\u811a\u672c\u5185\u5bb9\u7684\u6539\u53d8\u4ec5\u4ec5\u4f9d\u8d56\u4e8eURL\uff0c\u5219\u53ef\u4ee5\u7f13\u5b58\u3002\u5982\u679c\u662f\u4f9d\u8d56\u4e8eCookie\uff0c\u8ba4\u8bc1\u4fe1\u606f\u6216\u5176\u4ed6\u5916\u90e8\u6761\u4ef6\uff0c\u5f88\u53ef\u80fd\u4e0d\u7f13\u5b58\u3002<\/p>\n<ul>\n<li>\u6700\u5229\u4e8e\u7f13\u5b58\u7684\u811a\u672c\u5c31\u662f\u5728\u5185\u5bb9\u6539\u53d8\u65f6\u5bfc\u51fa\u6210\u9759\u6001\u6587\u4ef6\uff0c\u670d\u52a1\u5668\u4f1a\u60f3\u5bf9\u5f85\u5176\u4ed6Web\u4e00\u6837\u5bf9\u5f85\u5b83\u7684\uff0c\u751f\u6210\u4ee5\u53ca\u4f7f\u7528\u9a8c\u8bc1\u5668\uff0c\u4e8e\u662f\u4f60\u53ef\u4ee5\u597d\u597d\u5730\u559d\u676f\u5496\u5561\u4e86\u3002\u8bb0\u4f4f\uff0c\u53ea\u6709\u6587\u4ef6\u66f4\u6539\u7684\u65f6\u5019\u624d\u5199\u5165\uff0c\u8fd9\u6837Last-Modified\u65f6\u95f4\u5c31\u4f1a\u88ab\u4fdd\u5b58\u4e0b\u6765\u3002<\/li>\n<li>\u53e6\u5916\u7684\u811a\u672c\u7f13\u5b58\u4e4b\u9053\u5c31\u662f\u4f7f\u7528<code>age<\/code>\u76f8\u5173\u7684\u5934\u90e8\uff0c\u76f8\u6bd4<code>Expires<\/code>, <code>Cache-Control: max-age<\/code>\u66f4\u5bb9\u6613\u4e9b\uff0c\u56e0\u4e3a\u662f\u76f8\u5bf9\u65f6\u95f4\uff0c\u6bcf\u6b21\u65b0\u8bf7\u6c42\u5b8c\u6210\u540e\u91cd\u65b0\u8bbe\u7f6e\uff0c\u65f6\u95f4\u5230\u4e86\uff0c\u518d\u91cd\u65b0\u8bf7\u6c42\uff0c\u518d\u8bbe\u7f6e\u65b0\u7684\u76f8\u5bf9\u8fc7\u671f\u65f6\u95f4\u3002<\/li>\n<li>\u5982\u679c\u4e0a\u9762\u7684\u505a\u6cd5\u4f60\u641e\u4e0d\u5b9a\uff0c\u4f60\u8fd8\u53ef\u4ee5\u8bd5\u8bd5\u901a\u8fc7\u811a\u672c\u751f\u6210\u4e00\u4e2a\u6821\u9a8c\u5668, \u7136\u540e\u56de\u5e94<code>If-Modified-Since<\/code>\u548c\/\u6216<code>If-None-Match<\/code>\u8bf7\u6c42\u3002\u901a\u8fc7\u5206\u6790HTTP\u5934\u4fe1\u606f\uff0c\u5728\u9002\u5408\u7684\u65f6\u5019\u56de\u5e94<code>304 Not Modified<\/code>. \u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u4e0d\u662f\u4e2a\u6253\u6253\u9171\u6cb9\u5c31\u80fd\u641e\u5b9a\u7684\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<p><strong>\u5176\u4ed6\u4e00\u4e9b\u6280\u5de7<\/strong><\/p>\n<ul style=\"margin-top:0;\">\n<li><strong>\u4e0d\u8981\u4f7f\u7528POST<\/strong>\uff1a\u82e5\u662f\u83b7\u53d6\u6570\u636e\uff0c\u5c3d\u91cf\u4e0d\u4f7f\u7528POST\u6a21\u5f0f\uff0c\u56e0\u4e3aPOST\u65b9\u5f0f\u8fd4\u56de\u5185\u5bb9\u5927\u90e8\u5206\u4e0d\u4f1a\u88ab\u7f13\u5b58\uff0c\u76f8\u5bf9\u7684\uff0c\u901a\u8fc7GET\u4ee5\u8def\u5f84\u548c\u67e5\u8be2\u53d1\u9001\u7684\u4fe1\u606f\u88ab\u7f13\u5b58\u5b58\u50a8\u4e0b\u6765\u4f9b\u540e\u7eed\u4f7f\u7528\u3002<\/li>\n<li><strong>URL\u5730\u5740\u4e2d\u4e0d\u8981\u5d4c\u5165\u7279\u5b9a\u7684\u7528\u6237\u4fe1\u606f<\/strong>\uff0c\u9664\u975e\u751f\u6210\u7684\u5185\u5bb9\u5bf9\u4e8e\u7528\u6237\u800c\u8a00\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>\u4e0d\u8981\u6307\u671b\u540c\u4e00\u7528\u6237\u7684\u6240\u6709\u8bf7\u6c42\u6765\u81ea\u540c\u4e00\u4e3b\u673a<\/strong>\uff0c\u56e0\u4e3a\u7f13\u5b58\u7ecf\u5e38\u534f\u540c\u5de5\u4f5c\u3002<span class=\"s\">\/\/zxx: <img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/32.gif\" align=\"absmiddle\"> \u561b\u610f\u601d\uff1f<\/span><\/li>\n<li><strong>\u751f\u6210Content-Length<sup title=\"\u67e5\u770b\u91ca\u4e49\"><a href=\"#MARK10\">\u2469<\/a><\/sup>\u5934\u4fe1\u606f<\/strong>\u3002\u5b9e\u73b0\u4e0d\u96be\uff0c\u53ef\u8ba9\u4f60\u7684\u811a\u672c\u4ee5\u6301\u4e45\u8fde\u63a5(<em>persistent connection<\/em>)\u5f62\u5f0f\u54cd\u5e94\u3002\u8fd9\u5141\u8bb8\u5ba2\u6237\u7aef\u5728\u4e00\u4e2aTCP\/IP\u8bf7\u6c42\u4e0a\u8bf7\u6c42\u591a\u4e2a\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u4e3a\u6bcf\u6b21\u8bf7\u6c42\u5355\u72ec\u5efa\u7acb\u8fde\u63a5\uff0c\u8fd9\u6837\u4f60\u7684\u7f51\u7ad9\u76f8\u5e94\u4f1a\u5feb\u5f88\u591a\u3002<\/li>\n<\/ul>\n<p>\u8be6\u89c1<a href=\"#IMP-SCRIPT\">\u5b9e\u73b0\u6ce8\u610f\u4e8b\u9879<\/a>\u3002<\/p>\n<blockquote id=\"MARK10\"><p>\u2469Content-Length\uff1a\u6307\u660e\u5b9e\u4f53\u6b63\u6587\u7684\u957f\u5ea6\uff0c\u4ee5\u5b57\u8282\u65b9\u5f0f\u5b58\u50a8\u7684\u5341\u8fdb\u5236\u6570\u5b57\u6765\u8868\u793a\u3002\u5728\u6570\u636e\u4e0b\u884c\u7684\u8fc7\u7a0b\u4e2d\uff0cContent-Length\u7684\u65b9\u5f0f\u8981\u9884\u5148\u5728\u670d\u52a1\u5668\u4e2d\u7f13\u5b58\u6240\u6709\u6570\u636e\uff0c\u7136\u540e\u6240\u6709\u6570\u636e\u518d\u4e00\u80a1\u8111\u513f\u5730\u53d1\u7ed9\u5ba2\u6237\u7aef\u3002<\/p><\/blockquote>\n<h3 id=\"FAQ\">\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h3>\n<p><strong>\u7f13\u5b58\u53ef\u7528\u7684\u6700\u91cd\u8981\u4e8b\u60c5\u662f\uff1f<\/strong><br \/>\u5176\u4e2d\u4e00\u4e2a\u4e0d\u9519\u7684\u7b56\u7565\u662f\u627e\u51fa\u5e38\u7528\u7684\u3001\u89c4\u6a21\u8f83\u5927\u7684\u5185\u5bb9\uff08\u5c24\u5176\u56fe\u7247\uff09\uff0c\u7136\u540e\u4f18\u5148\u5904\u7406\u4e4b\u3002<\/p>\n<p><strong>\u6211\u8be5\u5982\u4f55\u5229\u7528\u7f13\u5b58\u8ba9\u6211\u7684\u9875\u9762\u5c3d\u53ef\u80fd\u7684\u5feb\uff1f<\/strong><br \/>\u6700\u5e94\u8be5\u7f13\u5b58\u7684\u5185\u5bb9\u8bbe\u7f6e\u4e00\u4e2a\u8f83\u957f\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u9a8c\u8bc1\u6709\u52a9\u4e8e\u51cf\u5c11\u67e5\u770b\u5185\u5bb9\u7684\u65f6\u95f4\uff0c\u4e0d\u8fc7\u7f13\u5b58\u4ecd\u4f1a\u8fde\u63a5\u6e90\u670d\u52a1\u5668\u67e5\u770b\u662f\u4e0d\u662f\u8fc7\u671f\u4e86\u3002\u5982\u679c\u7f13\u5b58\u5df2\u7ecf\u77e5\u9053\u5185\u5bb9\u662f\u65b0\u9c9c\u7684\uff0c\u76f4\u63a5\u8fd4\u56de\u3002<\/p>\n<p><strong>\u6211\u77e5\u9053\u7f13\u5b58\u662f\u4e2a\u597d\u4e1c\u897f\uff0c\u4f46\u662f\u6211\u60f3\u968f\u65f6\u77e5\u9053\u591a\u5c11\u4eba\u8bbf\u95ee\u4e86\u6211\u7684\u7f51\u9875\uff01<\/strong><br \/>\u5982\u679c\u4f60\u5fc5\u987b\u77e5\u9053\u6bcf\u4e00\u6b21\u9875\u9762\u88ab\u8bbf\u95ee\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u9009\u62e9\u9875\u9762\u4e0a\u7684\u4e00\u4e2a\u5c0f\u5143\u7d20(\u6216\u9875\u9762\u672c\u8eab)\uff0c\u7136\u540e\u7ed9\u8fd9\u4e2a\u5143\u7d20\u4e00\u4e2a\u9002\u5f53\u7684\u5934\u4fe1\u606f\u4f7f\u5b83\u662f\u4e0d\u53ef\u7f13\u5b58\u3002\u6bd4\u5982\uff0c\u4f60\u53ef\u4ee5\u5728\u6bcf\u4e00\u4e2a\u9875\u9762\u4e0a\u5f15\u7528\u4e00\u4e2a<em>1\u50cf\u7d20\u00d71\u50cf\u7d20<\/em>\u7684\u4e0d\u53ef\u7f13\u5b58\uff08\u5982scr\u5730\u5740\u540e\u9762\u52a0\u4e2a\u968f\u673a\u6570<sup>Add<\/sup>\uff09\u7684\u900f\u660e\u56fe\u7247\u3002Referer\u5934\u4fe1\u606f\u5c06\u4f1a\u5305\u542b\u8c03\u7528\u5b83\u7684\u9875\u9762\u4fe1\u606f\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u5373\u4f7f\u8fd9\u6837\u4e5f\u4e0d\u80fd\u7ed9\u51fa\u4f60\u7528\u6237\u7684\u7cbe\u786e\u7edf\u8ba1\uff0c\u5e76\u4e14\u5bf9\u901a\u8fc7\u4e92\u8054\u7f51\u8bbf\u95ee\u7684\u7528\u6237\u4e5f\u4e0d\u662f\u5f88\u53cb\u597d\uff1a\u4ea7\u751f\u4e0d\u5fc5\u8981\u7684\u6d41\u91cf\uff0c\u5e76\u5f3a\u8feb\u7528\u6237\u7b49\u5f85\u672a\u88ab\u7f13\u5b58\u7684\u5185\u5bb9\u4ece\u7f51\u7edc\u4e0a\u4e0b\u8f7d\u56de\u6765\u3002\u66f4\u591a\u7684\u4fe1\u606f\u53ef\u53c2\u89c1<a href=\"#REF\">\u62d3\u5c55\u9605\u8bfb<\/a>\u4e2d\u7684\u201c<a href=\"http:\/\/www.goldmark.org\/netrants\/webstats\/\">\u89e3\u8bfb\u8bbf\u95ee\u7edf\u8ba1<\/a>\u201d\u5bf9\u5e94\u5185\u5bb9\u3002<\/p>\n<p><strong>\u6211\u8be5\u5982\u4f55\u67e5\u770bHTTP\u5934\uff1f<\/strong><br \/>\u8bb8\u591a\u6d4f\u89c8\u5668\u53ef\u4ee5\u67e5\u770b<code>Expires<\/code>\u548c<code>Last-Modified<\/code>\u5934\u4fe1\u606f\uff0c\u5982\u53f3\u952e\u2192\u67e5\u770b\u9875\u9762\u4fe1\u606f\u6216\u7c7b\u4f3c\u9762\u677f\u3002\u4f8b\u5982\uff0c\u5728Firefox\u6d4f\u89c8\u5668\u4e0b<sup>Add<\/sup>\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/2013-05-22_150257.png\" width=\"325\" height=\"148\" alt=\"\u67e5\u770b\u9875\u9762\u4fe1\u606f\" align=\"top\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/2013-05-22_150419.png\" width=\"425\" height=\"232\" alt=\"\u6700\u540e\u4fee\u6539\u65f6\u95f4\" align=\"top\"><\/p>\n<p>\u8868\u793a\u8981\u770b\u5230\u5b8c\u6574\u7684\u5934\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Telnet<sup title=\"\u67e5\u770b\u767e\u79d1\u89e3\u91ca\"><a href=\"#MARK11\">\u246a<\/a><\/sup>\u5ba2\u6237\u7aef\u624b\u52a8\u8fde\u63a5\u5230Web\u670d\u52a1\u5668\u4e0a\u3002<\/p>\n<p>\u4e3a\u6b64\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u7528\u4e00\u4e2a\u5b57\u6bb5\u6307\u5b9a\u7aef\u53e3\uff08\u9ed8\u8ba4\u662f80\uff09\uff0c\u6216\u8005\u8fde\u63a5\u5230<code>www.example.com:80<\/code>\u6216\u8005<code>www.example.com 80<\/code>(\u6ce8\u610f\u662f\u7a7a\u683c)\uff0c\u66f4\u591a\u8bbe\u7f6e\u8bf7\u53c2\u8003\u4e00\u4e0btelnet\u5ba2\u6237\u7aef\u7684\u6587\u6863\u3002<\/p>\n<p>\u4e00\u65e6\u8fde\u63a5\u5230\u8be5\u7f51\u7ad9\uff0c\u8f93\u5165\u8bf7\u6c42\u3002\u6bd4\u5982\uff0c\u4f60\u60f3\u67e5\u770b<code>http:\/\/www.example.com\/foo.html<\/code>\u7684\u5934\u4fe1\u606f\uff0c\u9996\u5148\u8fde\u63a5\u5230<code>www.example.com<\/code>, \u4f7f\u752880\u7aef\u53e3\uff0c\u5e76\u8f93\u5165\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>GET \/foo.html HTTP\/1.1 [return]\nHost: www.example.com [return][return]<\/pre>\n<\/div>\n<p><code>[return]<\/code>\u7b49\u540c\u6572\u56de\u8f66\u952e\uff0c\u6700\u540e\u8f93\u5165\u4e24\u6b21\u786e\u8ba4\u3002\u8fd9\u6837\u5c31\u4f1a\u8f93\u51fa\u5934\u4fe1\u606f\uff0c\u7136\u540e\u8ddf\u7740\u5b9e\u9645\u5185\u5bb9\u3002\u5982\u679c\u53ea\u60f3\u770b\u5230\u5934\u4fe1\u606f\uff0c\u4f7f\u7528<code>HEAD<\/code>\u6765\u66ff\u6362<code>GET<\/code>.<\/p>\n<blockquote id=\"MARK11\"><p>\u246aTelnet\uff1aTelnet\u534f\u8bae\u662fTCP\/IP\u534f\u8bae\u65cf\u4e2d\u7684\u4e00\u5458\uff0c\u662fInternet\u8fdc\u7a0b\u767b\u9646\u670d\u52a1\u7684\u6807\u51c6\u534f\u8bae\u548c\u4e3b\u8981\u65b9\u5f0f\u3002\u5b83\u4e3a\u7528\u6237\u63d0\u4f9b\u4e86\u5728\u672c\u5730\u8ba1\u7b97\u673a\u4e0a\u5b8c\u6210\u8fdc\u7a0b\u4e3b\u673a\u5de5\u4f5c\u7684\u80fd\u529b\u3002\u5728\u7ec8\u7aef\u4f7f\u7528\u8005\u7684\u7535\u8111\u4e0a\u4f7f\u7528telnet\u7a0b\u5e8f\uff0c\u7528\u5b83\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002\u7ec8\u7aef\u4f7f\u7528\u8005\u53ef\u4ee5\u5728telnet\u7a0b\u5e8f\u4e2d\u8f93\u5165\u547d\u4ee4\uff0c\u8fd9\u4e9b\u547d\u4ee4\u4f1a\u5728\u670d\u52a1\u5668\u4e0a\u8fd0\u884c\uff0c\u5c31\u50cf\u76f4\u63a5\u5728\u670d\u52a1\u5668\u7684\u63a7\u5236\u53f0\u4e0a\u8f93\u5165\u4e00\u6837\u3002\u53ef\u4ee5\u5728\u672c\u5730\u5c31\u80fd\u63a7\u5236\u670d\u52a1\u5668\u3002\u8981\u5f00\u59cb\u4e00\u4e2atelnet\u4f1a\u8bdd\uff0c\u5fc5\u987b\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\u6765\u767b\u5f55\u670d\u52a1\u5668\u3002Telnet\u662f\u5e38\u7528\u7684\u8fdc\u7a0b\u63a7\u5236Web\u670d\u52a1\u5668\u7684\u65b9\u6cd5\u3002<\/p><\/blockquote>\n<p><strong>\u6211\u7684\u9875\u9762\u662f\u5bc6\u7801\u4fdd\u62a4\u7684\uff0c\u4ee3\u7406\u7f13\u5b58\u662f\u600e\u4e48\u5904\u7406\u7684\uff1f<\/strong><br \/>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cHTTP\u9a8c\u8bc1\u4fdd\u62a4\u7684\u9875\u9762\u662f\u79c1\u6709\u7684\uff0c\u5171\u4eab\u7f13\u5b58\u662f\u4e0d\u80fd\u4fdd\u5b58\u7684\u3002\u7136\u800c\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7<code>Cache-Control: public<\/code>\u5934\u7684\u8bbe\u7f6e\u4f7f\u5176\u516c\u6709\u3002HTTP 1.1\u6807\u51c6\u517c\u5bb9\u7684\u7f13\u5b58\u670d\u52a1\u5668\u53ef\u4ee5\u4f7f\u4e4b\u7f13\u5b58\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u8fd9\u4e9b\u7f13\u5b58\u7684\u9875\u9762\u5728\u7528\u6237\u67e5\u770b\u4e4b\u524d\u8fd8\u8981\u9a8c\u8bc1\u4e00\u4e0b\uff0c\u53ef\u4ee5\u7ec4\u5408\u4f7f\u7528<code>Cache-Control: public<\/code>\u548c<code>no-cache<\/code>\u5934\uff0c\u8fd9\u76f8\u5bf9\u4e8e\u544a\u8bc9\u7f13\u5b58\u5668\u5b83\u4ece\u7f13\u5b58\u4e2d\u9001\u51fa\u5185\u5bb9\u524d\u5fc5\u987b\u9012\u4ea4\u5ba2\u6237\u7aef\u7684\u9a8c\u8bc1\u7ed9\u539f\u59cb\u670d\u52a1\u5668\u3002\u8fd9\u4e2a\u5934\u4fe1\u606f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>Cache-Control: public, no-cache<\/pre>\n<\/div>\n<p>\u4e0d\u7ba1\u600e\u4e48\uff0c\u8fd9\u662f\u6700\u5c0f\u5316\u9a8c\u8bc1\u6700\u597d\u7684\u65b9\u6cd5\uff1b\u4f8b\u5982\uff0c\u4f60\u7684\u56fe\u7247\u4e0d\u654f\u611f\uff0c\u4f60\u53ef\u4ee5\u628a\u5b83\u653e\u5728\u5206\u79bb\u7684\u76ee\u5f55\u4e2d\uff0c\u5e76\u914d\u7f6e\u4f60\u7684\u670d\u52a1\u5bf9\u5b83\u4eec\u4e0d\u505a\u5f3a\u5236\u9a8c\u8bc1\u3002\u8fd9\u6837\uff0c\u90a3\u4e9b\u56fe\u7247\u5c31\u4f1a\u5f88\u81ea\u7136\u7684\u88ab\u7f13\u5b58\u4e86\u3002<\/p>\n<p><strong>\u5982\u679c\u4eba\u4eec\u901a\u8fc7\u7f13\u5b58\u8bbf\u95ee\u6211\u7684\u7f51\u7ad9\uff0c\u6211\u5e94\u8be5\u62c5\u5fc3\u5b89\u5168\u5417\uff1f<\/strong><br \/>SSL\u9875\u9762\u4e0d\u4f1a\u88ab\u4ee3\u7406\u670d\u52a1\u5668\u7f13\u5b58\uff0c\u6240\u4ee5\u8fd9\u4e2a\u4f60\u4e0d\u9700\u8981\u62c5\u5fc3\u3002\u4f46\u662f\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u5c31\u597d\u975eSSL\u9875\u9762\u8bf7\u6c42\u4ee5\u53caURL\u6293\u53d6\u8fd9\u53e3\uff0c\u4f60\u61c2\u7684\uff0c\u8fd9\u662f\u4e0d\u5b89\u5168\u7684\u3002\u65e0\u826f\u7684\u7ba1\u7406\u5458\u53ef\u80fd\u5c31\u4f1a\u6536\u96c6\u7f51\u7ad9\u7528\u6237\u7684\u4fe1\u606f\uff0c\u5c24\u5176\u5728URL\u4e2d\u3002<\/p>\n<p>\u4e8b\u5b9e\u4e0a\uff0c\u4efb\u4f55\u7f51\u7edc\u7ba1\u7406\u5458\u90fd\u53ef\u4ee5\u6536\u96c6\u4f60\u7684\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u4e4b\u95f4\u7684\u8fd9\u7c7b\u4fe1\u606f\u3002CGI<sup title=\"\u67e5\u770b\u8bf4\u660e\"><a href=\"#MARK12\">\u246b<\/a><\/sup>\u811a\u672c\u6709\u4e2a\u6f0f\u6d1e\uff0c\u4f1a\u628a\u7528\u6237\u540d\u548c\u5bc6\u7801\u653e\u5728\u81ea\u8eab\u7684URL\u5730\u5740\u4e2d\uff0c\u8fd9\u5f88\u5bb9\u6613\u8ba9\u5176\u4ed6\u4eba\u53d1\u73b0\u7528\u6237\u7684\u767b\u9646\u4fe1\u606f\u3002<\/p>\n<p>\u5982\u679c\u4f60\u61c2\u5f97\u4e92\u8054\u7f51\u5b89\u5168\u7684\u4e9b\u57fa\u672c\u673a\u5236\uff0c\u5c31\u4e0d\u4f1a\u5bf9\u4ee3\u7406\u7f13\u5b58\u611f\u5230\u4efb\u4f55\u60ca\u8bb6\u3002<\/p>\n<blockquote id=\"MARK12\"><p>\u246bCGI\uff1a\u901a\u7528\u7f51\u5173\u63a5\u53e3(Common Gateway Interface). \u7528\u4e8e\u521d\u59cb\u5316\u8f6f\u4ef6\u670d\u52a1\u7684\u670d\u52a1\u5668\u65b9\u63a5\u53e3\u3002\u8fd9\u5957\u63a5\u53e3\u63cf\u8ff0\u4e86Web\u670d\u52a1\u5668\u4e0e\u540c\u4e00\u8ba1\u7b97\u673a\u4e0a\u7684\u8f6f\u4ef6\u7684\u901a\u4fe1\u65b9\u5f0f\u3002<\/p>\n<p>\u901a\u7528\u7f51\u5173\u63a5\u53e3\uff0c\u5b83\u662f\u4e00\u6bb5\u7a0b\u5e8f\uff0c\u8fd0\u884c\u5728\u670d\u52a1\u5668\u4e0a\uff0c\u63d0\u4f9b\u540c\u5ba2\u6237\u7aefHTML\u9875\u9762\u7684\u63a5\u53e3\uff0c\u901a\u4fd7\u7684\u8bb2CGI\u5c31\u50cf\u662f\u4e00\u5ea7\u6865\uff0c\u628a\u7f51\u9875\u548cWEB\u670d\u52a1\u5668\u4e2d\u7684\u6267\u884c\u7a0b\u5e8f\u8fde\u63a5\u8d77\u6765\uff0c\u5b83\u628aHTML\u63a5\u6536\u7684\u6307\u4ee4\u4f20\u9012\u7ed9\u670d\u52a1\u5668\uff0c\u518d\u628a\u670d\u52a1\u5668\u6267\u884c\u7684\u7ed3\u679c\u8fd4\u8fd8\u7ed9HTML\u9875\uff1b\u7528CGI\u53ef\u4ee5\u5b9e\u73b0\u5904\u7406\u8868\u683c\uff0c\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u7b49\u8bb8\u591a\u64cd\u4f5c\uff0c\u6700\u5e38\u89c1\u7684CGI\u7a0b\u5e8f\u5c31\u662f\u8ba1\u6570\u5668\u3002CGI\u4f7f\u7f51\u9875\u53d8\u5f97\u4e0d\u662f\u9759\u6001\u7684\uff0c\u800c\u662f\u4ea4\u4e92\u5f0f\u7684\u3002<\/p>\n<\/blockquote>\n<p><strong>\u6211\u5728\u5bfb\u627e\u4e00\u4e2a\u96c6\u6210\u7684Web\u53d1\u5e03\u89e3\u51b3\u65b9\u6848\u3002\u54ea\u4e9b\u662f\u53ef\u7f13\u5b58\u7684\uff1f<\/strong><br \/>\u8fd9\u4e2a\u662f\u4e0d\u786e\u5b9a\u7684\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u8d8a\u590d\u6742\u7684\u7cfb\u7edf\u8d8a\u96be\u7f13\u5b58\u3002\u6700\u5dee\u7684\u60c5\u51b5\u5c31\u662f\u6240\u6709\u7684\u5185\u5bb9\u90fd\u662f\u52a8\u6001\u751f\u6210\uff0c\u5e76\u4e14\u4e0d\u63d0\u4f9b\u6821\u9a8c\u5668\uff0c\u4e0e\u7f13\u5b58\u538b\u6839\u65e0\u7f18\u3002\u4f60\u53ef\u4ee5\u548c\u4f60\u4f9b\u5e94\u5546\u7684\u6280\u672f\u4eba\u5458\u6c9f\u901a\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\uff0c\u5e76\u53c2\u8003\u4e0b\u9762\u5b9e\u73b0\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<p><strong>\u6211\u7684\u56fe\u7247\u7f13\u5b58\u4e00\u4e2a\u6708\u540e\u624d\u5230\u671f\uff0c\u6211\u73b0\u5728\u5c31\u60f3\u53d8\u52a8\uff01<\/strong><br \/><code>Expires<\/code>\u5934\u662f\u7ed5\u4e0d\u8fc7\u53bb\u7684\uff0c\u9664\u975e\u7f13\u5b58\uff08\u6d4f\u89c8\u5668\u6216\u8005\u4ee3\u7406\uff09\u7a7a\u95f4\u4e0d\u8db3\u624d\u4f1a\u5220\u9664\u526f\u672c\uff0c\u7f13\u5b58\u526f\u672c\u4f1a\u4e00\u76f4\u4f7f\u7528\u3002<\/p>\n<p>\u6700\u6709\u6548\u7684\u65b9\u6cd5\u662f\u4fee\u6539\u94fe\u63a5\uff0c\u8fd9\u6837\u4f1a\u4ece\u6e90\u670d\u52a1\u5668\u83b7\u53d6\u5b8c\u6574\u7684\u65b0\u5185\u5bb9\u3002\u8bf7\u8bb0\u4f4f\uff0c\u8c03\u7528\u56fe\u7247\u7684\u8fd9\u4e2a\u9875\u9762\u4e5f\u4f1a\u88ab\u7f13\u5b58\u7684\uff0c\u6b63\u56e0\u5982\u6b64\uff0c\u6211\u4eec\u9700\u8981\u8ba9\u56fe\u7247\u4ee5\u53ca\u5176\u4ed6\u7c7b\u4f3c\u7684\u9759\u6001\u8d44\u6e90\u6613\u7f13\u5b58\uff0c\u800c\u9875\u9762\u5462\u53ef\u4ee5\u968f\u7740\u81ea\u8eab\u7684\u6539\u53d8\uff08\u4f8b\u5982\u6539\u53d8\u4e86\u4e00\u4e2a\u56fe\u7247\u7684URL\u5730\u5740<sup>Add<\/sup>\uff09\u5373\u65f6\u66f4\u65b0\u3002<\/p>\n<p>\u5982\u679c\u4f60\u60f3\u6446\u8131\u7279\u5b9a\u7f13\u5b58\uff0c\u91cd\u8f7d\u5185\u5bb9\uff0c\u53ef\u4ee5\u8bd5\u8bd5\u5f3a\u5236\u5237\u65b0\uff08\u5728FireFox\u4e2d\uff0cshift\u952e+reload\u6309\u94ae\u7b49\u540c\u4e8e\u5904\u7406<code>Pragma: no-cache<\/code>\u8bf7\u6c42\u5934\uff09\u6216\u8005\u8ba9\u7f13\u5b58\u7ba1\u7406\u5458\u4f7f\u7528\u67d0\u4e9b\u63a5\u53e3\u5220\u9664\u5185\u5bb9\u3002<\/p>\n<p><strong>\u6211\u8fd0\u884c\u4e00\u4e2aWeb Hosting\u670d\u52a1\u3002\u6211\u600e\u6837\u624d\u80fd\u8ba9\u6211\u7684\u7528\u6237\u53d1\u5e03\u7f13\u5b58\u53cb\u597d\u7684\u7f51\u9875\uff1f<\/strong><br \/>\u5982\u679c\u4f60\u4f7f\u7528apahe\uff0c\u53ef\u4ee5\u8003\u8651\u5141\u8bb8\u4ed6\u4eec\u4f7f\u7528<code>.htaccess<\/code>\u6587\u4ef6\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u6587\u6863\u3002<\/p>\n<p>\u5426\u5219\u4f60\u9700\u8981\u5728\u6bcf\u4e00\u4e2a\u865a\u62df\u4e3b\u673a\u4e0a\u4e3a\u5404\u79cd\u7f13\u5b58\u5c5e\u6027\u5efa\u7acb\u9884\u5b9a\u7684\u533a\u57df\u3002\u6bd4\u5982\uff1a\u4f60\u53ef\u4ee5\u6307\u5b9a\u4e00\u4e2a\u53eb<code>\/cache-1m<\/code>\u7684\u76ee\u5f55\u7528\u6765\u653e\u8bfb\u53d6\u540e\u8981\u7f13\u5b58\u4e00\u4e2a\u6708\u7684\u5185\u5bb9\uff0c\u7136\u540e\u518d\u5efa\u4e00\u4e2a<code>\/no-cache<\/code>\u7684\u76ee\u5f55\uff0c\u5e76\u5728\u5934\u4fe1\u606f\u4e2d\u6307\u5b9a\u8fd9\u4e48\u76ee\u5f55\u4e2d\u7684\u5185\u5bb9\u4e0d\u88ab\u7f13\u5b58\u3002<\/p>\n<p>\u4e0d\u7ba1\u4e0a\u9762\u4f60\u505a\u7684\u5982\u4f55\uff0c\u603b\u4e4b\u6700\u597d\u4f18\u5148\u7ed9\u7528\u6237\u91cf\u5927\u7684\u5ba2\u6237\u505a\u7f13\u5b58\u5904\u7406\u3002\u5927\u90e8\u5206\u670d\u52a1\u5668\u8282\u7ea6\u7684\u6d41\u91cf\u4ee5\u53ca\u8d1f\u8f7d\u90fd\u662f\u6765\u81ea\u9ad8\u5bb9\u91cf\u7684\u7f51\u7ad9\u3002<\/p>\n<p><strong>\u6211\u660e\u660e\u544a\u8bc9\u7f51\u9875\u8981\u597d\u597d\u7f13\u5b58\uff0c\u4f46\u5b83\u8001\u662f\u53bb\u8bf7\u6c42\uff0c\u600e\u4e48\u7834\uff1f<\/strong><br \/>\u7f13\u5b58\u670d\u52a1\u5668\u5e76\u4e0d\u603b\u662f\u8981\u6c42\u5185\u5bb9\u8981\u4fdd\u6301\u5e76\u91cd\u7528\uff0c\u67d0\u4e9b\u6761\u4ef6\u4e0b\uff0c\u4ed6\u4eec\u662f\u4e0d\u4fdd\u5b58\u4e0d\u91cd\u7528\u7684\uff0c\u6240\u6709\u7684\u7f13\u5b58\u670d\u52a1\u5668\u90fd\u56de\u57fa\u4e8e\u6587\u4ef6\u7684\u5927\u5c0f\u3001\u7c7b\u578b\uff08\u56fe\u7247\u3001\u9875\u9762\u2026\uff09\uff0c\u6216\u8005\u670d\u52a1\u5668\u7a7a\u95f4\u7684\u5269\u4f59\u6765\u786e\u5b9a\u5982\u4f55\u7f13\u5b58\u3002\u5982\u679c\u4f60\u7684\u6587\u4ef6\u6bd4\u8f83\u5927\u6216\u5f88\u70ed\u95e8\uff0c\u53ef\u80fd\u5c31\u4e0d\u4f1a\u88ab\u7f13\u5b58\u3002\u6709\u4e9b\u7f13\u5b58\u670d\u52a1\u5668\u5141\u8bb8\u7ba1\u7406\u5458\u51b3\u5b9a\u54ea\u4e9b\u5185\u5bb9\u8981\u5b58\u50a8\uff0c\u6709\u4e9b\u7f13\u5b58\u670d\u52a1\u5668\u5141\u8bb8\u5185\u5bb9\u957f\u5b58\u7f13\u5b58\u4e2d\uff0c\u6240\u4ee5\uff0c\u5b83\u4eec\u603b\u662f\u53ef\u7528\u7684\u3002<\/p>\n<h3 id=\"IMP-SERVER\">\u5b9e\u73b0\u9700\u6ce8\u610f\u7684\uff1aWeb\u670d\u52a1\u5668\u7aef<\/h3>\n<p>\u4e00\u822c\u8bf4\u6765\uff0c\u5e94\u8be5\u9009\u62e9\u6700\u65b0\u7248\u672c\u7684Web\u670d\u52a1\u5668\u7a0b\u5e8f\u6765\u90e8\u7f72\u3002\u4e0d\u4ec5\u56e0\u4e3a\u5b83\u4eec\u5305\u542b\u66f4\u591a\u5229\u4e8e\u7f13\u5b58\u7684\u529f\u80fd\uff0c\u65b0\u7248\u672c\u5f80\u5f80\u5728\u6027\u80fd\u548c\u5b89\u5168\u6027\u65b9\u9762\u90fd\u6709\u5f88\u591a\u7684\u6539\u5584\u3002<\/p>\n<p><strong>Apache HTTP\u670d\u52a1\u5668<\/strong><br \/><a href=\"http:\/\/www.apache.org\/\">Apache<\/a>\u4f7f\u7528\u53ef\u9009\u6a21\u5757\u5305\u542b\u5934\u4fe1\u606f\uff0c\u5934\u4fe1\u606f<code>Expires<\/code>\u548c<code>Cache-Control<\/code>\u4e00\u5e76\u5305\u542b\u3002\u8fd9\u4e9b\u6a21\u5757\u57281.2\u7248\u672c\u4ee5\u4e0a\u90fd\u652f\u6301\u3002<\/p>\n<p>\u8fd9\u4e9b\u6a21\u5757\u9700\u8981\u7f16\u8bd1\u5230Apache\u4e2d\uff0c\u867d\u7136\u5305\u542b\uff0c\u4f46\u662f\u9ed8\u8ba4\u5e76\u672a\u5f00\u542f\u3002\u4e3a\u4e86\u786e\u5b9a\u76f8\u5e94\u6a21\u5757\u5df2\u7ecf\u88ab\u542f\u7528\uff0c\u627e\u5230httpd<sup title=\"\u70b9\u51fb\u67e5\u770b\u8be6\u7ec6\"><a href=\"#MARK13\">\u246c<\/a><\/sup>\u7a0b\u5e8f\uff0c\u8fd0\u884c<code>httpd -l<\/code>, \u5b83\u4f1a\u5217\u51fa\u53ef\u7528\u7684\u6a21\u5757\uff08\u6ce8\u610f\uff0c\u4ec5\u6709\u5185\u90e8\u7f16\u8bd1\u7684\u6a21\u5757\u5217\u8868\u624d\u4f1a\u663e\u793a\uff0c\u5728\u8f83\u65b0\u7248\u672c\u7684Apache\u4e2d\uff0c\u4f7f\u7528<code>httpd -M<\/code>\u53ef\u4ee5\u5305\u542b\u52a8\u6001\u52a0\u8f7d\u7684\u6a21\u5757<sup>N<\/sup>\uff09\uff0c\u6211\u4eec\u9700\u8981\u5173\u6ce8\u7684\u662fexpires\u6a21\u5757(<code>expires_module<\/code>)\u548cheaders\u6a21\u5757(<code>headers_module<\/code>)\u3002<\/p>\n<blockquote id=\"MARK13\"><p>\u246chttpd\uff1ahttpd\u662fApache\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae(HTTP)\u670d\u52a1\u5668\u7684\u4e3b\u7a0b\u5e8f\u3002\u88ab\u8bbe\u8ba1\u4e3a\u4e00\u4e2a\u72ec\u7acb\u8fd0\u884c\u7684\u540e\u53f0\u8fdb\u7a0b\uff0c\u5b83\u4f1a\u5efa\u7acb\u4e00\u4e2a\u5904\u7406\u8bf7\u6c42\u7684\u5b50\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u7684\u6c60\u3002<\/p><\/blockquote>\n<ul>\n<li>\u5982\u679c\u8fd9\u4e9b\u6a21\u5757\u4e0d\u53ef\u7528\uff0c\u4f60\u9700\u8981\u8054\u7cfb\u7ba1\u7406\u5458\uff0c\u91cd\u65b0\u7f16\u8bd1\u4ee5\u5305\u542b\u8fd9\u4e9b\u6a21\u5757\u3002\u8fd9\u4e9b\u6a21\u5757\u53ef\u4ee5\u901a\u8fc7\u53d6\u6d88\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u6ce8\u91ca\u6389\u542f\u7528\uff0c\u6216\u8005\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u589e\u52a0<code>-enable -module=expires<\/code>\u548c<code>-enable-module=headers<\/code>\u53c2\u6570(apache 1.3+). \u53c2\u5f00Apache\u4e2d\u7684INSTALL\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u4e00\u65e6\u4f60\u7684Apache\u6709\u4e86\u76f8\u5e94\u7684\u6a21\u5757\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<code>mod_expires<\/code>\u6307\u5b9a\u8fc7\u671f\u7684\u65f6\u95f4\uff0c\u8981\u4e48\u5728<code>.htaccess<\/code>\u6587\u4ef6\uff0c\u8981\u4e48\u5728\u670d\u52a1\u5668\u7684<code>access.conf<\/code>\u6587\u4ef6\u3002\u4f60\u53ef\u4ee5\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u662f\u4ece\u8bbf\u95ee\u65f6\u95f4\u5f00\u59cb\u8fd8\u662f\u6587\u4ef6\u4fee\u6539\u65f6\u95f4\u5f00\u59cb\uff0c\u5e76\u5e94\u7528\u5230\u7279\u5b9a\u7c7b\u578b\u6587\u4ef6\u4e0a\u6216\u8bbe\u4e3a\u9ed8\u8ba4\u914d\u7f6e\u3002\u67e5\u770b\u5b98\u65b9<a href=\"http:\/\/www.apache.org\/docs\/mod\/mod_expires.html\">\u8be5\u6a21\u5757\u6587\u6863<\/a>\u83b7\u5f97\u66f4\u591a\u4fe1\u606f\uff0c\u6216\u8005\u9047\u5230\u95ee\u9898\u7684\u65f6\u5019\u5411\u4f60\u8eab\u8fb9\u7684apache\u4e13\u5bb6\u8ba8\u6559\u3002<\/p>\n<p>\u4e3a\u5e94\u7528<code>Cache-Control<\/code>\u5934\uff0c\u4f60\u9700\u8981\u4f7f\u7528<code>mod_headers<\/code>\u6a21\u5757\uff0c\u5176\u5141\u8bb8\u4f60\u4e3a\u8d44\u6e90\u6307\u5b9a\u4efb\u610f\u7684\u5934\u4fe1\u606f\u3002\u53ef\u53c2\u8003<a href=\"http:\/\/www.apache.org\/docs\/mod\/mod_headers.html\">mod_headers\u5b98\u65b9\u6587\u6863<\/a>\u3002<\/p>\n<p>\u4e0b\u9762\u662f<code>.htaccess<\/code>\u6587\u4ef6\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5934\u4fe1\u606f\uff1a<\/p>\n<ul style=\"margin-top:0;\">\n<li><code>.htaccess<\/code>\u6587\u4ef6\u5141\u8bb8Web\u53d1\u5e03\u8005\u4f7f\u7528\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u6307\u5b9a\u3002\u53ef\u4ee5\u5f71\u54cd\u76ee\u5f55\u4ee5\u53ca\u5b50\u76ee\u5f55\u5185\u5bb9\u3002\u548c\u4f60\u7684\u670d\u52a1\u5668\u7ba1\u7406\u5458\u6c9f\u901a\u4e0b\uff0c\u770b\u770b\u5b83\u4eec\u662f\u5426\u53ef\u7528\u3002\n<div class=\"zxx_code\">\n<pre>### activate mod_expires\nExpiresActive On\n### Expire .gif's 1 month from when they're accessed\nExpiresByType image\/gif A2592000\n### Expire everything else 1 day from when it's last modified\n### (this uses the Alternative syntax)\nExpiresDefault \"modification plus 1 day\"\n### Apply a Cache-Control header to index.html\n&lt;Files index.html&gt;\nHeader append Cache-Control \"public, must-revalidate\"\n&lt;\/Files&gt;<\/pre>\n<\/div>\n<\/li>\n<li>\u6ce8\u610f\uff0c\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c<code>mod_expires<\/code>\u4f1a\u81ea\u52a8\u8ba1\u7b97\u5e76\u63d2\u5165<code>Cache-Control:max-age<\/code>\u5934\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p>Apache 2&#8217;s\u7684\u914d\u7f6e\u548c1.3\u7c7b\u4f3c\uff0c\u66f4\u591a\u4fe1\u606f\u53ef\u4ee5\u53c2\u80032.2<sup title=\"\u8fd9\u4e2a\u4ee5\u540e\u8fd8\u4f1a\u66f4\u65b0\">N<\/sup>\u7684<a href=\"http:\/\/httpd.apache.org\/docs\/2.2\/mod\/mod_expires.html\">mod_expires<\/a>\u548c<a href=\"http:\/\/httpd.apache.org\/docs\/2.2\/mod\/mod_headers.html\">mod_headers<\/a>\u6587\u6863\u3002<\/p>\n<p><strong>\u5fae\u8f6fIIS<\/strong><br \/><a href=\"http:\/\/www.microsoft.com\/\">\u5fae\u8f6f<\/a>\u7684IIS\u6709\u4e00\u4e9b\u7075\u6d3b\u7684\u65b9\u5f0f\u53ef\u4ee5\u5f88\u5bb9\u6613\u5f97\u8bbe\u7f6e\u5934\u4fe1\u606f\uff0c\u4e0d\u8fc7\u4f3c\u4e4e\u53ea\u9488\u5bf9IIS 4.0\u670d\u52a1\u5668\uff0c\u5e76\u4e14\u53ea\u80fd\u5728NT\u670d\u52a1\u5668\u4e0a\u8fd0\u884c\u3002<\/p>\n<p>\u4e3a\u4e86\u7ed9\u7f51\u7ad9\u67d0\u533a\u57df\u6307\u5b9a\u5934\u4fe1\u606f\uff0c\u9700\u8981\u8fdb\u5165<code>Administration<\/code>(\u7ba1\u7406\u5458)\u5de5\u5177\u9762\u677f\uff0c\u7136\u540e\u518d\u8bbe\u7f6e\u5c5e\u6027\u3002\u9009\u62e9<code>HTTP Headers<\/code>\u9009\u9879\u5361\u540e\uff0c\u4f60\u4f1a\u770b\u5230\u4e24\u4e2a\u6709\u610f\u601d\u7684\u533a\u57df\uff1a<code>Enable Content Expiration<\/code>\u548c<code>Custom HTTP headers<\/code>, \u7b2c\u4e00\u4e2a\u542b\u4e49\u4e00\u76ee\u4e86\u7136\uff0c\u7b2c\u4e8c\u4e2a\u7528\u6765\u5e94\u7528<code>Cache-Control<\/code>\u5934\u3002<span class=\"s\">\/\/zxx: \u6b64\u5904\u7684\u64cd\u4f5c\u63cf\u8ff0\u5f88\u8fc7\u65f6\u4e86\uff0c\u770b\u770bwindow7\u4e0b\uff0c\u64cd\u4f5c\u754c\u9762\u65e9\u5c31\u5927\u53d8\u6837\u4e86\uff01<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/2013-05-22_211459.png\" width=\"247\" height=\"176\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/2013-05-22_211708.png\" width=\"329\" height=\"194\" alt=\"iis\u54cd\u5e94\u5934\"><\/p>\n<p>\u8bbe\u7f6eASP\u9875\u9762(Active Server Pages)\u7684\u5934\u4fe1\u606f\u53ef\u4ee5\u53c2\u8003\u540e\u9762\u7684ASP\u7ae0\u8282\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7ISAPI\u6a21\u5757\u8bbe\u7f6e\u5934\u4fe1\u606f\uff0c\u7ec6\u8282\u8bf7\u53c2\u8003MSDN\u3002<\/p>\n<p><strong>Netscape\/iPlanet\u4f01\u4e1a\u670d\u52a1\u5668<\/strong><br \/>3.6\u7248\u672c\u4ee5\u540e\uff0c\u4f01\u4e1a\u7248\u670d\u52a1\u5668\u5df2\u7ecf\u4e0d\u80fd\u4ee5\u4efb\u4f55\u65b9\u5f0f\u8bbe\u7f6e<code>Expires<\/code>\u5934\u4fe1\u606f\u4e86\u3002\u7136\u800c\uff0c\u5176\u4ece3.0\u7248\u672c\u5f00\u59cb\u652f\u6301HTTP 1.1\u7684\u529f\u80fd\u3002\u8fd9\u610f\u5473\u7740HTTP 1.1\u7684\u7f13\u5b58\uff08\u4ee3\u7406\u670d\u52a1\u5668\/\u6d4f\u89c8\u5668\uff09\u5229\u7528\u4f60\u5bf9<code>Cache-Control<\/code>\u7684\u8bbe\u7f6e\u6765\u83b7\u5f97\u3002<\/p>\n<p>\u4e3a\u4e86\u4f7f\u7528<code>Cache-Control<\/code>\u5934\uff0c\u5728\u7ba1\u7406\u5458\u670d\u52a1\u5668\u4e2d\u9009\u62e9<code>Content Management | Cache Control Directives<\/code>\uff08\u5185\u5bb9\u7ba1\u7406|\u7f13\u5b58\u63a7\u5236\u6307\u4ee4\uff09\u3002\u7136\u540e\uff0c\u4f7f\u7528\u8d44\u6e90\u9009\u62e9\u5668(Resource Picker)\uff0c\u9009\u62e9\u4f60\u5e0c\u671b\u8bbe\u7f6e\u5934\u4fe1\u606f\u7684\u76ee\u5f55\u3002\u8bbe\u7f6e\u5b8c\u5934\u4fe1\u606f\u540e\uff0c\u70b9\u51fb&#8221;\u786e\u5b9a&#8221;\u3002\u66f4\u591a\u4fe1\u606f\u8bf7\u53c2\u8003<a href=\"http:\/\/www.redhat.com\/docs\/manuals\/ent-server\/\">NES\u624b\u518c<\/a>\u3002<\/p>\n<h3 id=\"IMP-SCRIPT\">\u5b9e\u73b0\u9700\u6ce8\u610f\u7684\uff1a\u670d\u52a1\u7aef\u811a\u672c<\/h3>\n<p class=\"right_exp\">\u65f6\u523b\u8c28\u8bb0\uff0c\u5728Web\u670d\u52a1\u5668\u4e0a\u8bbe\u7f6eHTTP\u8981\u6bd4\u901a\u8fc7\u811a\u672c\u8bbe\u7f6e\u8f7b\u677e\u4e9b\u3002\u4f60\u53ef\u4ee5\u4e24\u8005\u90fd\u8bd5\u8bd5\u3002<\/p>\n<p>\u56e0\u4e3a\u670d\u52a1\u5668\u7aef\u7684\u811a\u672c\u4e3b\u8981\u662f\u4e3a\u4e86\u52a8\u6001\u5185\u5bb9\uff0c\u6240\u4ee5\u5373\u4f7f\u5b9e\u9645\u4e0a\u5185\u5bb9\u53ef\u4ee5\u88ab\u7f13\u5b58\u7684\uff0c\u5176\u4e5f\u4e0d\u4f1a\u751f\u6210\u7f13\u5b58\u5f88\u5f3a\u7684\u9875\u9762\u3002\u5982\u679c\u4f60\u7684\u9875\u9762\u5185\u5bb9\u7ecf\u5e38\u53d8\u52a8\uff0c\u4f46\u4e0d\u662f\u6bcf\u4e2a\u9875\u9762\u90fd\u4e2d\u67aa\uff0c\u53ef\u4ee5\u8003\u8651\u8bbe\u7f6e<code>Cache-Control: max-age<\/code>\u5934\u4fe1\u606f\uff0c\u5927\u90e8\u5206\u7528\u6237\u662f\u5728\u76f8\u5bf9\u7aef\u7684\u65f6\u95f4\u5185\u518d\u6b21\u8bbf\u95ee\u8fd9\u4e2a\u9875\u9762\u3002\u4f8b\u5982\uff1a\u7528\u6237\u70b9\u51fb\u201c\u540e\u9000\u201d\u6309\u94ae\uff0c\u5982\u679c\u6ca1\u6709\u4efb\u4f55\u9a8c\u8bc1\u6216\u65b0\u9c9c\u5ea6\u4fe1\u606f\uff0c\u4ed6\u4eec\u5c06\u4e0d\u5f97\u4e0d\u7b49\u5f85\uff0c\u76f4\u5230\u4ece\u670d\u52a1\u5668\u9875\u9762\u91cd\u65b0\u4e0b\u8f7d\u624d\u80fd\u770b\u5230\u5b83\u3002<\/p>\n<p><strong>CGI<\/strong><br \/>CGI\u811a\u672c\u662f\u751f\u6210\u5185\u5bb9\u6700\u5e38\u7528\u7684\u6280\u672f\u4e4b\u4e00\u3002\u4f60\u53ef\u4ee5\u8f7b\u8f7b\u677e\u677e\u5728\u8bf7\u6c42\u53d1\u9001\u7ed9\u4e3b\u4f53\u4e4b\u524d\u6dfb\u52a0HTTP\u8bf7\u6c42\u4fe1\u606f\u3002\u5927\u90e8\u5206CGI\u5b9e\u73b0\u90fd\u9700\u8981\u6dfb\u52a0<code>Content-Type<\/code>\u5934\u4fe1\u606f\uff0c\u4f8b\u5982\u8fd9\u4e2aPerl\u811a\u672c\uff1a<span class=\"s\">\/\/zxx: \u8fd8\u662f\u633a\u597d\u61c2\u7684<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/98.gif\" align=\"absmiddle\"><\/span><\/p>\n<div class=\"zxx_code\">\n<pre><#!\/usr\/bin\/perl\nprint \"Content-type: text\/html\\n\";\nprint \"Expires: Thu, 29 Oct 1998 17:04:19 GMT\\n\";\nprint \"\\n\";\n### the content body follows...\/pre><\/div>\n<p>\u7531\u4e8e\u90fd\u662f\u6587\u672c\uff0c\u4f60\u53ef\u4ee5\u5f88\u5bb9\u6613\u901a\u8fc7\u5185\u7f6e\u51fd\u6570\u751f\u6210<code>Expires<\/code>\u548c\u5176\u4ed6\u65e5\u671f\u76f8\u5173\u7684\u5934\u4fe1\u606f\u3002\u5982\u679c\u4f60\u4f7f\u7528<code>Cache-Control: max-age<\/code>\u4f1a\u66f4\u7b80\u5355\uff1a<\/p>\n<div class=\"zxx_code\"><pre>print \"Cache-Control: max-age=600\\n\";<\/pre>\n<\/div>\n<p>\u4e0a\u9762\u811a\u672c\u53ef\u4ee5\u8ba9\u8bf7\u6c42\u5b8c\u6210\u540e\u7f13\u5b5810\u5206\u949f\uff0c\u56e0\u6b64\uff0c\u5f53\u7528\u6237\u70b9\u51fb\u201c\u540e\u9000\u201d\u6309\u94ae\u7684\u65f6\u5019\uff0c\u5c31\u4e0d\u4f1a\u91cd\u65b0\u6d82\u80f6\u8bf7\u6c42\u4e86\u3002<\/p>\n<p>CGI\u7684\u89c4\u8303\u540c\u65f6\u4e5f\u5141\u8bb8\u5728\u811a\u672c\u73af\u5883\u4e2d\uff0c\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u5934\u4fe1\u606f\uff0c\u6bcf\u4e2a\u5934\u4fe1\u606f\u90fd\u6709\u4e00\u4e2a'HTTP_'\u7684\u524d\u7f00\u3002\u4e8e\u662f\u4e4e\uff0c\u5982\u679c\u4e00\u4e2a\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2a<code>If-Modified-Since<\/code>\u8bf7\u6c42\uff0c\u5c31\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>HTTP_IF_MODIFIED_SINCE<\/pre>\n<\/div>\n<p>\u53ef\u89c2\u6469<a href=\"http:\/\/www.mnot.net\/cgi_buffer\/\">cgi_buffer<\/a>\u5e93\uff0c\u5176\u53ef\u4ee5\u81ea\u52a8\u5b9e\u73b0<code>Etag<\/code>\u751f\u6210\u548c\u9a8c\u8bc1\uff0c<code>Content-Length<\/code>\u751f\u6210\u53cagzip\u5185\u5bb9\uff0c\u800c\u6240\u6709\u8fd9\u4e9b\u5b9e\u73b0\uff0c\u53ea\u9700\u8981\u4e00\u884cinclude\uff0c\u5c31\u53ef\u4ee5\u4e3aPerl\u548cPython\u5199CGI\u811a\u672c\u3002Python\u7248\u672c\u8fd8\u53ef\u4ee5\u5305\u88c5\u4efb\u610f\u7684CGI\u811a\u672c\u3002<\/p>\n<p><strong>\u670d\u52a1\u5668\u7aef\u5305\u542b<\/strong><br \/>SSI\uff08\u6269\u5c55\u540d\u901a\u5e38\u662f<code>.shtml<\/code>\uff09\u6700\u65e9\u53ef\u4ee5\u751f\u6210\u52a8\u6001\u5185\u5bb9\u7684\u7f51\u7ad9\u53d1\u5e03\u65b9\u6848\u3002\u901a\u8fc7\u5728\u9875\u9762\u4e2d\u4f7f\u7528\u7279\u5b9a\u7684\u6807\u7b7e\uff0c\u6709\u4e00\u5b9a\u9650\u5236\u7684\u5185HTML\u811a\u672c\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e86\u3002\u5927\u90e8\u5206\u7684SSI\u5b9e\u73b0\u4e0d\u8bbe\u7f6e\u9a8c\u8bc1\u5668\uff0c\u6545\u65e0\u6cd5\u7f13\u5b58\u3002\u4e0d\u8fc7Apache\u670d\u52a1\u5668\u5141\u8bb8\u901a\u8fc7\u8bbe\u7f6e\u8ba9SSI\u6587\u4ef6\u53ef\u7f13\u5b58\uff0c\u901a\u8fc7\u9002\u5f53\u7684\u6587\u4ef6\u5e76\u7ed3\u5408<code>XbitHack full<\/code>\u6307\u4ee4\u8bbe\u7f6e\u7ec4\u6267\u884c\u6743\u9650\u3002\u6b32\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605<a href=\"http:\/\/www.apache.org\/docs\/mod\/mod_include.html\">mod_include\u6587\u6863<\/a>\u3002<\/p>\n<p><strong>PHP<\/strong><br \/><a href=\"http:\/\/www.php.net\/\">PHP<\/a>\u4e3a\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\uff0c\u5728\u670d\u52a1\u5668\u5185\u7f6e\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5728HTML\u9875\u9762\u4e2d\u5185\u5d4c\u4f7f\u7528\uff0c\u5f88\u50cfSSL\uff0c\u4e0d\u8fc7\u6709\u66f4\u591a\u7684\u53ef\u9009\u9879\u3002PHP\u53ef\u4ee5\u5728\u4efb\u4f55Web\u670d\u52a1\u5668(Unix\u6216Windows)\u6216Apache\u6a21\u5757\u4e0a\u4f5c\u4e3aCGI\u4f7f\u7528\u3002<\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cPHP\u751f\u6210\u7684\u5185\u5bb9\u6ca1\u6709\u5206\u914d\u9a8c\u8bc1\u5668\uff0c\u56e0\u6b64\uff0c\u4e0d\u80fd\u7f13\u5b58\u3002\u4e0d\u8fc7\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u901a\u8fc7<code>Header()<\/code>\u51fd\u6570\u8bbe\u7f6eHTTP\u5934\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u521b\u5efa<code>Cache-Control<\/code>\u5934\uff0c\u8fc7\u671f\u65f6\u95f4\u4e3a3\u5929\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;?php\n Header(\"Cache-Control: must-revalidate\");\n\n $offset = 60 * 60 * 24 * 3;\n $ExpStr = \"Expires: \" . gmdate(\"D, d M Y H:i:s\", time() + $offset) . \" GMT\";\n Header($ExpStr);\n?&gt;<\/pre>\n<\/div>\n<p>\u8bb0\u4f4f<code>Header()<\/code>\u9700\u8981\u5728\u6240\u6709\u7684\u8f93\u51fa\u4e4b\u524d\u3002<\/p>\n<p>\u6b63\u5982\u4f60\u770b\u5230\u7684\uff0c\u4f60\u53ef\u4ee5\u624b\u5de5\u521b\u5efaHTTP\u65e5\u671f\u3002PHP\u6ca1\u6709\u4e13\u95e8\u7684\u51fd\u6570\uff08\u65b0\u7248\u672c\u5df2\u6539\u8fdb\uff0c\u8bf7\u53c2\u8003<a href=\"http:\/\/php.net\/date\">PHP\u7684\u65e5\u671f\u76f8\u5173\u51fd\u6570\u6587\u6863<\/a>\uff09\u3002\u5f53\u7136\uff0c\u6700\u7b80\u5355\u7684\u8fd8\u662f\u8bbe\u7f6e<code>Cache-Control: max-age<\/code>\u5934\u4fe1\u606f\uff0c\u9002\u7528\u4e8e\u5927\u90e8\u5206\u60c5\u51b5\u3002<\/p>\n<p>\u66f4\u591a\u5185\u5bb9\uff0c\u8bf7\u53c2\u9605<a href=\"http:\/\/www.php.net\/manual\/function.header.php3\">header\u624b\u518c<\/a>\u3002<\/p>\n<p>\u8fd8\u662f<a href=\"http:\/\/www.mnot.net\/cgi_buffer\/\">cgi_buffer<\/a>\u5e93\uff0c\u53ea\u8981\u4e00\u884c\u5305\u542b\uff0c\u5c31\u80fd\u4ee5PHP\u811a\u672c\u5f62\u5f0f\u81ea\u52a8\u5b9e\u73b0<code>Etag<\/code>\u751f\u6210\u548c\u9a8c\u8bc1\uff0c<code>Content-Length<\/code>\u751f\u6210\u53cagzip\u5185\u5bb9\u3002<\/p>\n<p><strong>Cold Fusion<\/strong><br \/><a href=\"http:\/\/www.adobe.com\/products\/coldfusion\/\">Cold Fusion<\/a>\u662fMacromedia\u7684\u5546\u4e1a\u670d\u52a1\u5668\u7aef\u811a\u672c\u5f15\u64ce\uff0c\u5e76\u4e14\u652f\u6301\u591a\u79cdWindows\u5e73\u53f0\uff0cLinux\u5e73\u53f0\u548c\u591a\u79cdUnix\u5e73\u53f0\u3002<span class=\"s\">\/\/zxx: \u770b\u5230Macromedia\u5fc3\u4eae\u4e86\u534a\u622a\uff0c\u51e0\u767e\u5e74\u524d\u5c31\u88ab\u6536\u8d2d\u7684\u516c\u53f8\u2026\u2026\u6b64\u6587\u672a\u514d\u592a\u8fc7\u65f6\u4e86\u70b9\u4e86~~\u5927\u5bb6\u8fd9\u6bb5\u53ef\u4ee5\u8df3\u8fc7\u4e86\uff0c\u51e0\u4e4e\u6ca1\u6709\u4efb\u4f55\u4ef7\u503c\u2026\u2026<\/span><\/p>\n<p>Cold Fusion\u901a\u8fc7CFHEADER\u6807\u8bb0\u8bbe\u7f6eHTTP\u5934\u4fe1\u606f\u76f8\u5bf9\u5bb9\u6613\u3002\u53ef\u60dc\u7684\u662f\uff0c\u4ee5\u4e0b\u7684Expires\u5934\u4fe1\u606f\u7684\u8bbe\u7f6e\u6709\u4e9b\u5bb9\u6613\u8bef\u5bfc\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;CFHEADER NAME=\"Expires\" VALUE=\"#Now()#\"&gt;<\/pre>\n<\/div>\n<p>\u5b83\u5e76\u4e0d\u50cf\u4f60\u60f3\u50cf\u7684\u90a3\u6837\u5de5\u4f5c\uff0c\u56e0\u4e3a\u65f6\u95f4\uff08\u672c\u4f8b\u4e2d\u4e3a\u8bf7\u6c42\u53d1\u8d77\u7684\u65f6\u95f4\uff09\u5e76\u4e0d\u4f1a\u88ab\u8f6c\u6362\u6210\u4e00\u4e2a\u7b26\u5408HTTP\u65f6\u95f4\uff0c\u800c\u4e14\u6253\u5370\u51fa\u526f\u672c\u7684Cold fusion\u7684\u65e5\u671f\/\u65f6\u95f4\u5bf9\u8c61\uff0c\u5927\u90e8\u5206\u5ba2\u6237\u7aef\u4f1a\u5ffd\u7565\u6216\u8005\u5c06\u5176\u8f6c\u6362\u62101970\u5e741\u67081\u65e5\u3002<\/p>\n<p>\u4f46\u662f\uff1aCold Fusion\u53e6\u5916\u63d0\u4f9b\u4e86\u4e00\u5957\u65e5\u671f\u683c\u5f0f\u5316\u51fd\u6570-<a href=\"http:\/\/livedocs.macromedia.com\/coldfusion\/7\/htmldocs\/00000483.htm\">GetHttpTimeSTring<\/a>. \u7ed3\u5408<a href=\"http:\/\/livedocs.macromedia.com\/coldfusion\/7\/htmldocs\/00000437.htm\">DateAdd<\/a>\u51fd\u6570\uff0c\u5c31\u5f88\u5bb9\u6613\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4e86\uff0c\u8fd9\u91cc\u6211\u4eec\u8bbe\u7f6e\u4e00\u4e2a\u5934\u4fe1\u606f\uff0c\u58f0\u660e\u5185\u5bb9\u57281\u4e2a\u6708\u4ee5\u540e\u8fc7\u671f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;cfheader name=\"Expires\" \n  value=\"#GetHttpTimeString(DateAdd('m', 1, Now()))#\"&gt;<\/pre>\n<\/div>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>CFHEADER<\/code>\u6807\u7b7e\u8bbe\u7f6e<code>Cache-Control: max-age<\/code>\u4ee5\u53ca\u5176\u4ed6\u5934\u4fe1\u606f\u3002<\/p>\n<p>\u8bb0\u4f4f\uff0cWeb\u670d\u52a1\u5668\u4e5f\u4f1a\u5c06\u5934\u4fe1\u606f\u8bbe\u7f6e\u8f6c\u7ed9Cold Fusion(\u505a\u4e3aCGI\u8fd0\u884c\u7684\u65f6\u5019)\uff0c\u68c0\u67e5\u4f60\u7684\u670d\u52a1\u5668\u8bbe\u7f6e\u5e76\u786e\u5b9a\u4f60\u662f\u5426\u53ef\u4ee5\u5229\u7528\u670d\u52a1\u5668\u8bbe\u7f6e\u4ee3\u66ffCold Fusion.<\/p>\n<p><strong>ASP\u548cASP.NET<\/strong><\/p>\n<p class=\"right_exp\">\u5728asp\u4e2d\u8bbe\u7f6eHTTP\u5934\u4fe1\u606f\u65f6\uff0c\u786e\u4fdd<code>Response<\/code>\u65b9\u6cd5\u8c03\u7528\u5728HTML\u5185\u5bb9\u8f93\u51fa\u4e4b\u524d\uff0c\u6216\u8005\u4f7f\u7528<code>Response.Buffer<\/code>\u6682\u5b58\u8f93\u51fa\u3002\u540c\u65f6\uff0c\u6ce8\u610f\u67d0\u4e9b\u7248\u672c\u7684IIS\u9ed8\u8ba4\u8bbe\u7f6e\u4f1a\u8f93\u51fa<code>Cache-Control: private<\/code>\u5934\u4fe1\u606f\uff0c\u5fc5\u987b\u58f0\u660e\u6210<code>public<\/code>\u624d\u80fd\u88ab\u5171\u4eab\u7f13\u5b58\u670d\u52a1\u5668\u7f13\u5b58\u3002<\/p>\n<p>ASP(Active Server Pages)\uff0cIIS\u5185\u7f6e\uff0c\u4e5f\u53ef\u7528\u4e8e\u5176\u4ed6Web\u670d\u52a1\u5668\uff0c\u540c\u6837\u5141\u8bb8\u4f60\u8bbe\u7f6eHTTP\u5934\u3002\u4f8b\u5982\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<code>Response<\/code>\u81ea\u5e26\u5c5e\u6027\uff1a<\/p>\n<div class=\"zxx_code\" style=\"clear:none; margin-right:273px;\">\n<pre>&lt;% Response.Expires=1440 %&gt;<\/pre>\n<\/div>\n<p>\u6307\u5b9a\u5185\u5bb9\u8fc7\u671f\u7684\u5206\u949f\u6570\u3002<code>Cache-Control<\/code>\u5934\u6dfb\u52a0\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\" style=\"clear:none; margin-right:273px;\">\n<pre>&lt;% Response.CacheControl=\"public\" %&gt;<\/pre>\n<\/div>\n<p>\u5728ASP.NET\u4e2d\uff0c<code>Response.Expires<\/code>\u5df2\u7ecf\u4e0d\u63a8\u8350\u4f7f\u7528\u4e86\uff0c\u6b63\u786e\u7684\u65b9\u6cd5\u662f\u901a\u8fc7<code>Response.Cache<\/code>\u8bbe\u7f6e\u7f13\u5b58\u76f8\u5173\u7684\u5934\u4fe1\u606f\uff0c\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>Response.Cache.SetExpires ( DateTime.Now.AddMinutes ( 60 ) ) ;\nResponse.Cache.SetCacheability ( HttpCacheability.Public ) ;<\/pre>\n<\/div>\n<h3 id=\"REF\">\u53c2\u8003\u6587\u6863\u548c\u62d3\u5c55\u9605\u8bfb<\/h3>\n<p><a href=\"http:\/\/www.ietf.org\/rfc\/rfc2616.txt\"><strong>HTTP 1.1\u89c4\u8303<\/strong><\/a><br \/>HTTP 1.1\u7684\u89c4\u8303\u5bf9\u9875\u9762\u7f13\u5b58\u4ee5\u53ca\u6743\u5a01\u7684\u63a5\u53e3\u5b9e\u73b0\u6307\u5357\u6709\u4e86\u5927\u91cf\u7684\u6269\u5c55\uff0c\u53c2\u8003\u7ae0\u8282\uff1a13, 14.9, 14.21\u4ee5\u53ca14.25 .<\/p>\n<p><strong><a href=\"http:\/\/www.web-caching.com\/\">Web-Caching.com<\/a><\/strong><br \/>\u5bf9\u7f13\u5b58\u6982\u5ff5\u6709\u5f88\u597d\u7684\u4ecb\u7ecd\uff0c\u5e76\u4e14\u6709\u5f88\u591a\u5176\u4ed6\u5728\u7ebf\u8d44\u6e90\u7684\u94fe\u63a5\u3002<\/p>\n<p><a href=\"http:\/\/www.goldmark.org\/netrants\/webstats\/\"><strong>\u89e3\u8bfb\u8bbf\u95ee\u7edf\u8ba1<\/strong><\/a><br \/>Jeff Goldberg\u8fd9\u7bc7\u5185\u5bb9\u4e30\u5bcc\u53d9\u8ff0\u4f1a\u544a\u8bc9\u4f60\u4e3a\u4ec0\u4e48\u4e0d\u5e94\u8be5\u8fc7\u5ea6\u4f9d\u8d56\u8bbf\u95ee\u7edf\u8ba1\u548c\u8ba1\u6570\u5668\u3002<span class=\"s\">\/\/zxx \u4e0a\u4e16\u7eaa\u7684\u590d\u53e4\u9875\u9762...<\/span><\/p>\n<p><a href=\"\"><strong>REDbot<\/strong><\/a><br \/>\u68c0\u67e5HTTP\u8d44\u6e90\uff0c\u4ee5\u786e\u5b9a\u5b83\u4eec\u5982\u4f55\u4e0eWeb\u7f13\u5b58\u4ea4\u4e92\uff0c\u4ee5\u53ca\u901a\u5e38\u5982\u4f55\u4f7f\u7528\u8be5\u534f\u8bae\u3002<\/p>\n<p><a href=\"http:\/\/www.mnot.net\/cgi_buffer\/\"><strong>cgi_buffer\u5e93<\/strong><\/a><br \/>\u53ea\u8981\u5305\u542b\u4e00\u884cPerl CGI, Python CGI\u4ee5\u53caPHP\u811a\u672c\uff0c\u5c31\u80fd\u81ea\u52a8\u5b9e\u73b0<code>Etag<\/code>\u751f\u6210\u4ee5\u53ca\u9a8c\u8bc1\uff0c<code>Content-Length<\/code>\u751f\u6210\u4ee5\u53caGzip\u5185\u5bb9\u7684\u6b63\u786e\u7f16\u7801\u3002Python\u7248\u672c\u8fd8\u53ef\u4ee5\u5305\u88c5\u4efb\u610f\u7684CGI\u811a\u672c\u3002<\/p>\n<h3 id=\"ABOUT\">\u5173\u4e8e\u672c\u6587\u6863<\/h3>\n<p>\u672c\u6587\u7248\u6743\u5c5e\u4e8eMark Nottingham \u00a9 1998-2013 \u90ae\u7bb1\u4e3a<code>mnot@pobox.com<\/code>.<\/p>\n<p>\u672c\u4f5c\u54c1\u9075\u5faa<a href=\"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0\/\">\u77e5\u8bc6\u5171\u4eab\u7f72\u540d - \u975e\u5546\u4e1a\u6027\u4f7f\u7528 - \u7981\u6b62\u6f14\u7ece3.0\u58f0\u660e\u9875\u9762\u8bb8\u53ef\u8bc1<\/a><sup>N<\/sup>\u3002<\/p>\n<p>\u6240\u6709\u7684\u5546\u6807\u7248\u6743\u4e3a\u5176\u6301\u6709\u4eba\u6240\u6709\u3002<\/p>\n<p>\u5185\u5bb9\u5728\u53d1\u5e03\u65f6\u662f\u53ef\u4ee5\u786e\u4fdd\u5176\u6b63\u786e\u6027\uff0c\u4f46\u662f\uff0c\u968f\u7740\u65f6\u95f4\u63a8\u79fb\uff0c\u5c31\u4e0d\u80fd\u4fdd\u8bc1\u6b63\u786e\u65e0\u8bef\u4e86\u3002\u56e0\u6b64\uff0c\u5982\u6709\u94fe\u63a5404\uff0c\u63cf\u8ff0\u9519\u8bef\u6216\u5176\u4ed6\u9700\u8981\u7ea0\u6b63\u7684\u95ee\u9898\u8bf7\u5c3d\u5feb\u544a\u77e5\u4f5c\u8005\u3002<\/p>\n<p>\u672c\u6587\u6700\u65b0\u7248\u672c\u53ef\u4ee5\u4ece<a href=\"http:\/\/www.mnot.net\/cache_docs\/\">http:\/\/www.mnot.net\/cache_docs\/<\/a>\u83b7\u5f97<\/p>\n<p>\u53ef\u7528\u7ffb\u8bd1\uff1a<a href=\"http:\/\/www.fatcow.com\/edu\/cache-docs-be\/\">\u767d\u4fc4\u7f57\u65af<\/a>\uff0c<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338\">\u4e2d\u56fd<\/a>\uff0c<a href=\"http:\/\/www.jakpsatweb.cz\/clanky\/caching-tutorial-czech-translation.html\">\u6377\u514b<\/a>\uff0c<a href=\"http:\/\/thomas-huehn.de\/web\/caching-tutorial\">\u5fb7\u56fd<\/a>\u548c<a href=\"http:\/\/www.mnot.net\/cache_docs\/index.fr.html\">\u6cd5\u56fd<\/a>\u3002 <\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>\u6587\u6863\u8bf4\u660e\uff1a<\/strong>\u542b\u6709\u4e0a\u6807N\u7684\u8868\u793a\u4e0e\u524d\u8f88\u7ffb\u8bd1\u65f6\u5019\u76f8\u6bd4\u65b0\u589e\u7684\uff1b\u4e0a\u6807Add\u8868\u793a\u4f5c\u4e3a\u8bd1\u8005\u7684\u6211\u4e3a\u4e86\u4fbf\u4e8e\u7406\u89e3\u81ea\u5df1\u6dfb\u52a0\u7684\uff1b\u4e0a\u6807\u6570\u5b57(\u2460-\u246c)\u662f\u5bf9\u4e00\u4e9b\u53ef\u80fd\u4e0d\u719f\u6089\u7684\u540d\u8bcd\u7684\u767e\u79d1\u89e3\u91ca\u3002<\/p>\n<p>\u867d\u7136\u539f\u4f5c\u8bed\u8a00\u4e0d\u751f\u52a8\uff0c\u6559\u79d1\u4e66\u822c\u4e00\u677f\u4e00\u773c<sup>\u246d<\/sup>\uff1b\u6709\u4e9b\u53ef\u80fd\u8fc7\u65f6\u4e86\u3002\u4e0d\u8fc7\uff0c\u8fd8\u662f\u5b66\u5230\u4e86\u5f88\u591a\u4e1c\u897f\u3002\u8fd8\u662f\u5f88\u503c\u7684\uff01\u6b22\u8fce\u5206\u4eab\uff0c\u6b22\u8fce\u4f20\u64ad\uff0c\u4ee5\u540e\u9762\u8bd5\u4e4b\u524d\u6765\u8fd9\u91cc\u770b\u770b\uff0c\u53ef\u80fd\u4f1a\u6709\u5e2e\u52a9\u54e6\uff01<\/p>\n<blockquote><p>\u246d \u5982\u679c\u6211\u4ecb\u7ecd\u7f13\u5b58\uff0c\u6211\u53ef\u80fd\u5c31\u8fd9\u4e48\u8bb2\uff1a\u7f13\u5b58\u662f\u4ec0\u4e48\uff1f\u987e\u540d\u601d\u610f\uff0c\u5c31\u662f\u7f13\u6162\u7684\u5b58\u94b1\u3002\u4e3a\u4ec0\u4e48\u8981\u7f13\u6162\u7684\u5b58\u94b1\uff0c\u56e0\u4e3a\u5de5\u8d44\u5361\u90fd\u4e0a\u4ea4\u8001\u5a46\u4e86\uff0c\u4e3a\u4e86\u6512\u70b9\u96f6\u82b1\u94b1\u53c8\u4e0d\u80fd\u88ab\u8001\u5a46\u53d1\u73b0\uff0c\u53ea\u80fd\u6162\u6162\u5b58\u4e86\u3002\u90a3\u7f13\u5b58\u6709\u4ec0\u4e48\u7528\u5462\uff1f\u4f60\u60f3\u554a\uff0c\u81ea\u5df1\u6709\u70b9\u5c0f\u94b1\uff0c\u505a\u4e8b\u60c5\u5c31\u65b9\u4fbf\u5feb\u6377\u4e86\uff0c\u6bd4\u65b9\u8bf4\u6211\u60f3\u4e70\u4e2a\u9c7c\u7aff\uff0c\u5c31\u4e0d\u8981\u53bb\u5411\u8001\u5a46\u8981\uff08\u7ed9\u4e0d\u7ed9\u5148\u4e0d\u8c08\uff09\uff0c\u81ea\u5df1\u4ece\u81ea\u5df1\u8fd9\u8fb9\u53d6\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u6267\u884c\u7684\u901f\u5ea6\u3002<\/p>\n<p>\u90a3\u4ec0\u4e48\u65f6\u5019\u53ef\u4ee5\u5b58\u4ec0\u4e48\u65f6\u5019\u4e0d\u80fd\u5b58\u5462\uff1f\u8001\u5a46\u7ed9\u96f6\u82b1\u94b1\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u4f1a\u6709\u8fc7\u671f\u65f6\u95f4\u5934\uff0c\u4f8b\u5982\uff0c\u5468\u4e00\u7529\u4e86100\u5757\u94b1\uff0c\u62ff\u53bb\uff0c\u8fd9\u662f\u4e00\u5468\u7684\u4f19\u98df\uff01\u8fd9\u4e2a\u4e00\u5468\u5c31\u662f\u8fc7\u671f\u65f6\u95f4\u5934(Expires Header)\uff0c\u5728\u8fd9\u4e2a\u65f6\u95f4\u5185\uff0c\u4f60\u7684\u94b1\u53ef\u4ee5\u4ece\u7f13\u5b58\uff0c\u4e5f\u5c31\u662f\u81ea\u5df1\u8fd9\u91cc\u53d6\u2026\u2026<\/p><\/blockquote>\n<p><script>(function() { var eleSup = document.getElementsByTagName(\"sup\"); for (var i=0, length = eleSup.length; i<length; i+=1) {if (eleSup[i].innerHTML == \"N\") { eleSup[i].style.color = \"#cd0000\"; } } })();<\/script><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea<a href=\"http:\/\/www.zhangxinxu.com\/\">\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[<a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a>]<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=3338\" title=\"\u70b9\u51fb\u67e5\u770b\u672c\u6587\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201305\/cache-cover.jpg\" width=\"550\" height=\"170\" alt=\"Web\u7f13\u5b58\" class=\"imgpad mb10\" \/><\/a><br \/>\n\u7f13\u5b58\u662f\u4ec0\u4e48\uff1f\u987e\u540d\u601d\u610f\uff0c\u5c31\u662f\u7f13\u6162\u7684\u5b58\u94b1\u3002\u4e3a\u4ec0\u4e48\u8981\u7f13\u6162\u7684\u5b58\u94b1\uff0c\u56e0\u4e3a\u5de5\u8d44\u5361\u90fd\u4e0a\u4ea4\u8001\u5a46\u4e86\uff0c\u4e3a\u4e86\u6512\u70b9\u96f6\u82b1\u94b1\u53c8\u4e0d\u80fd\u88ab\u8001\u5a46\u53d1\u73b0\uff0c\u53ea\u80fd\u6162\u6162\u5b58\u4e86\u3002\u90a3\u7f13\u5b58\u6709\u4ec0\u4e48\u7528\u5462\uff1f\u4f60\u60f3\u554a\uff0c\u81ea\u5df1\u6709\u70b9\u5c0f\u94b1\uff0c\u505a\u4e8b\u60c5\u5c31\u65b9\u4fbf\u5feb\u6377\u4e86\uff0c\u6bd4\u65b9\u8bf4\u6211\u60f3\u4e70\u4e2a\u9c7c\u7aff\uff0c\u5c31\u4e0d\u8981\u53bb\u5411\u8001\u5a46\u8981\uff08\u7ed9\u4e0d\u7ed9\u5148\u4e0d\u8c08\uff09\uff0c\u81ea\u5df1\u4ece\u81ea\u5df1\u8fd9\u8fb9\u53d6\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u6267\u884c\u7684\u901f\u5ea6\u3002<\/p>\n<p>\u90a3\u4ec0\u4e48\u65f6\u5019\u53ef\u4ee5\u5b58\u4ec0\u4e48\u65f6\u5019\u4e0d\u80fd\u5b58\u5462\uff1f\u8001\u5a46\u7ed9\u96f6\u82b1\u94b1\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u4f1a\u6709\u8fc7\u671f\u65f6\u95f4\u5934\uff0c\u4f8b\u5982\uff0c\u5468\u4e00\u7529\u4e86100\u5757\u94b1\uff0c\u62ff\u53bb\uff0c\u8fd9\u662f\u4e00\u5468\u7684\u4f19\u98df\uff01\u8fd9\u4e2a\u4e00\u5468\u5c31\u662f\u8fc7\u671f\u65f6\u95f4\u5934(Expires Header)\uff0c\u5728\u8fd9\u4e2a\u65f6\u95f4\u5185\uff0c\u4f60\u7684\u524d\u53ef\u4ee5\u4ece\u7f13\u5b58\uff0c\u4e5f\u5c31\u662f\u81ea\u5df1\u8fd9\u91cc\u53d6\u2026\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[816,822,819,821,817,820,219,818,358],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/3338"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=3338"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/3338\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=3338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=3338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=3338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}