{"id":209961,"date":"2025-10-24T02:02:16","date_gmt":"2025-10-23T18:02:16","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209961\/"},"modified":"2025-10-24T02:02:17","modified_gmt":"2025-10-23T18:02:17","slug":"cdn-214","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209961\/","title":{"rendered":"CDN\u7f13\u5b58\u7b56\u7565\u4f18\u5316\u5b9e\u6218\uff1a\u63d0\u5347\u547d\u4e2d\u7387\u4e0e\u964d\u672c\u7684\u843d\u5730\u65b9\u6848"},"content":{"rendered":"<p>\u5728\u7f51\u7ad9\u5168\u7403\u5316\u548c\u5185\u5bb9\u52a0\u901f\u7684\u80cc\u666f\u4e0b\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u7ecf\u6210\u4e3a\u964d\u4f4e\u5ef6\u8fdf\u3001\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u548c\u63a7\u5236\u5e26\u5bbd\u6210\u672c\u7684\u5fc5\u5907\u5de5\u5177\u3002\u5bf9\u4e8e\u9762\u5411\u5168\u7403\u6216\u7279\u5b9a\u5730\u533a\uff08\u5982\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u3001\u7f8e\u56fd\uff09\u7684\u7ad9\u957f\u548c\u4f01\u4e1a\u7528\u6237\u6765\u8bf4\uff0c<strong>\u63d0\u5347CDN\u7f13\u5b58\u547d\u4e2d\u7387\u76f4\u63a5\u5173\u7cfb\u5230\u8bbf\u95ee\u901f\u5ea6\u4e0e\u6d41\u91cf\u8d39\u7528<\/strong>\u3002\u672c\u6587\u7ed3\u5408\u5b9e\u6218\u7ecf\u9a8c\uff0c\u8be6\u7ec6\u8bb2\u89e3\u53ef\u843d\u5730\u7684CDN\u7f13\u5b58\u7b56\u7565\u4f18\u5316\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u90e8\u7f72\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\u7b49\u591a\u79cd\u540e\u7aef\u62d3\u6251\u7684\u573a\u666f\u3002<\/p>\n<h2>\u7f13\u5b58\u539f\u7406\u4e0e\u5173\u952e\u6982\u5ff5\u56de\u987e<\/h2>\n<p>\u5728\u6df1\u5165\u4f18\u5316\u524d\uff0c\u5148\u660e\u786e\u51e0\u4e2a\u6838\u5fc3\u6982\u5ff5\uff1a<\/p>\n<ul>\n<li><strong>\u7f13\u5b58\u547d\u4e2d\u7387\uff08Hit Ratio\uff09<\/strong>\uff1a\u7f13\u5b58\u8bf7\u6c42\u4e2d\u88ab\u8fb9\u7f18\u7f13\u5b58\u547d\u4e2d\u7684\u6bd4\u4f8b\u3002\u76f4\u63a5\u5f71\u54cd\u56de\u6e90\u6d41\u91cf\u548c\u5ef6\u8fdf\u3002<\/li>\n<li><strong>Cache Key<\/strong>\uff1a\u51b3\u5b9a\u7f13\u5b58\u7c92\u5ea6\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u901a\u5e38\u7531URL\uff08\u542b\u67e5\u8be2\u53c2\u6570\uff09\u3001\u8bf7\u6c42\u5934\uff08\u5982Host\u3001Cookie\u3001Accept-Encoding\uff09\u548c\u8bf7\u6c42\u65b9\u6cd5\u7ec4\u6210\u3002<\/li>\n<li><strong>TTL\uff08Time To Live\uff09<\/strong>\uff1a\u8d44\u6e90\u5728\u8fb9\u7f18\u8282\u70b9\u4fdd\u7559\u7684\u65f6\u95f4\u3002<\/li>\n<li><strong>\u534f\u5546\u7f13\u5b58<\/strong>\uff08ETag\u3001Last-Modified\uff09\uff1a\u53ef\u51cf\u5c11\u5b8c\u6574\u56de\u6e90\u4f20\u8f93\uff0c\u8fd4\u56de304\u8282\u7701\u5e26\u5bbd\u3002<\/li>\n<li><strong>Stale\u7b56\u7565<\/strong>\uff1astale-while-revalidate\u3001stale-if-error\u7b49\u53ef\u4ee5\u5728\u56de\u6e90\u6162\u6216\u5f02\u5e38\u65f6\u4fdd\u6301\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<h3>\u5e38\u89c1\u7f13\u5b58\u5931\u6548\u539f\u56e0<\/h3>\n<ul>\n<li>\u8fc7\u4e8e\u7ec6\u7c92\u5ea6\u7684Cache Key\uff08\u4f8b\u5982\u5305\u542bsession\u6216\u7528\u6237ID\uff09\u5bfc\u81f4\u7f13\u5b58\u788e\u7247\u5316\u3002<\/li>\n<li>\u4e0d\u5408\u7406\u7684TTL\u8bbe\u7f6e\uff0c\u9759\u6001\u8d44\u6e90TTL\u8fc7\u4f4e\u6216\u52a8\u6001\u8d44\u6e90TTL\u8fc7\u9ad8\u3002<\/li>\n<li>\u672a\u5bf9\u67e5\u8be2\u5b57\u7b26\u4e32\u6216\u8bf7\u6c42\u5934\u8fdb\u884c\u89c4\u8303\u5316\uff0c\u5bfc\u81f4\u540c\u4e00\u8d44\u6e90\u591a\u4e2a\u7f13\u5b58\u7248\u672c\u3002<\/li>\n<li>Cookie\u672a\u6e05\u7406\u6216Header\u5305\u542b\u975e\u5fc5\u8981\u5b57\u6bb5\uff08\u5982\u5927\u91cf\u8ddf\u8e2aCookie\uff09\u3002<\/li>\n<\/ul>\n<h2>\u843d\u5730\u4f18\u5316\u7b56\u7565\u4e0e\u914d\u7f6e\u7ec6\u8282<\/h2>\n<h3>1. \u8bbe\u8ba1\u5408\u9002\u7684Cache Key\u4e0e\u89c4\u8303\u5316URL<\/h3>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8bb8\u591aCDN\u4f1a\u628a\u5b8c\u6574URL\uff08\u542b\u67e5\u8be2\u5b57\u7b26\u4e32\uff09\u4f5c\u4e3aCache Key\u3002\u4e3a\u907f\u514d\u788e\u7247\u5316\uff1a<\/p>\n<ul>\n<li>\u5bf9\u9759\u6001\u8d44\u6e90\uff08JS\/CSS\/\u56fe\u7247\uff09\u5728URL\u5c42\u9762\u505a\u5230\u201c\u65e0\u67e5\u8be2\u53c2\u6570\u201d\u6216\u4f7f\u7528\u7248\u672c\u53f7\uff08\u5982?v=1.2.3\uff09\u7ba1\u7406\u3002\u5c06\u7248\u672c\u53f7\u89c6\u4e3a\u552f\u4e00\u6807\u8bc6\uff0c\u4fbf\u4e8e\u5f3a\u7f13\u5b58\u4e0e\u5f3a\u5236\u5237\u65b0\u3002<\/li>\n<li>\u542f\u7528\u67e5\u8be2\u5b57\u7b26\u4e32\u8fc7\u6ee4\u6216\u6392\u5e8f\uff1a\u53ea\u7f13\u5b58\u5bf9\u5185\u5bb9\u6709\u5f71\u54cd\u7684\u53c2\u6570\uff0c\u4f8b\u5982 ?id=123 \u5bf9\u9759\u6001\u56fe\u65e0\u610f\u4e49\u5219\u53bb\u9664\u3002<\/li>\n<li>\u4f7f\u7528\u81ea\u5b9a\u4e49Cache Key\u89c4\u5219\uff0c\u5c06Cookie\u3001Authorization\u3001\u52a8\u6001Header\u6392\u9664\u5728\u5916\uff0c\u6216\u4ec5\u4fdd\u7559\u90e8\u5206Header\uff08\u5982Accept-Encoding\u3001User-Agent\u5728\u5fc5\u8981\u65f6\uff09\u3002<\/li>\n<\/ul>\n<h3>2. \u5408\u7406\u8bbe\u7f6eCache-Control\u4e0e\u534f\u5546\u7f13\u5b58<\/h3>\n<p>\u63a8\u8350\u7684\u7ec4\u5408\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u9759\u6001\u8d44\u6e90\uff1aCache-Control: public, max-age=31536000, immutable\u3002\u9002\u5408\u6307\u7eb9\u5316\uff08hash\u547d\u540d\uff09\u8d44\u6e90\u3002<\/li>\n<li>\u53ef\u53d8\u4f46\u53d8\u5316\u4e0d\u9891\u7e41\u7684\u8d44\u6e90\uff1a\u77edTTL\uff08\u59823600\u79d2\uff09+ ETag\/Last-Modified\uff0c\u7528\u4ee5\u652f\u6301\u534f\u5546\u7f13\u5b58\u3002<\/li>\n<li>API\/\u52a8\u6001\u9875\u9762\uff1a\u4f7f\u7528Cache-Control: s-maxage=\u3001stale-while-revalidate\u548cstale-if-error\u6765\u63a7\u5236CDN\u8fb9\u7f18\u884c\u4e3a\uff0c\u800c\u4e0d\u5f71\u54cd\u6d4f\u89c8\u5668\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5bf9CDN\u4f7f\u7528s-maxage\u6765\u8986\u76d6\u8fb9\u7f18\u8282\u70b9TTL\uff0c\u540c\u65f6\u6d4f\u89c8\u5668\u4fdd\u7559\u8f83\u77edmax-age\uff0c\u4ece\u800c\u63a7\u5236\u7ec8\u7aef\u884c\u4e3a\u3002<\/p>\n<h3>3. \u4f7f\u7528\u8fb9\u7f18\u5237\u65b0\u4e0e\u5206\u7ea7\u56de\u6e90\uff08Origin Shield \/ Tiered Caching\uff09<\/h3>\n<p>\u5728\u9ad8\u5e76\u53d1\u8bbf\u95ee\u6216\u5168\u7403\u5206\u5e03\u573a\u666f\uff08\u5982\u9999\u6e2f\u3001\u65e5\u672c\u3001\u7f8e\u56fd\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7528\u6237\uff09\u4e0b\uff0c\u914d\u7f6e\u5206\u7ea7\u7f13\u5b58\u80fd\u663e\u8457\u51cf\u5c11\u56de\u6e90\u538b\u529b\uff1a<\/p>\n<ul>\n<li>\u542f\u7528Origin Shield\u6216\u4e8c\u7ea7\u7f13\u5b58\u5c42\uff0c\u96c6\u4e2d\u5c11\u6570\u56de\u6e90\u8bf7\u6c42\u5230\u4e00\u4e2a\u4e2d\u95f4\u5c42\uff0c\u51cf\u5c11\u539f\u70b9\u538b\u529b\u4e0e\u5e26\u5bbd\u6210\u672c\u3002<\/li>\n<li>\u7ed3\u5408\u8d1f\u8f7d\u5747\u8861\u4e0e\u5065\u5eb7\u68c0\u67e5\uff0c\u628a\u9999\u6e2f\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u4f5c\u4e3a\u533a\u57df\u6027\u56de\u6e90\u70b9\uff0c\u51cf\u5c11\u8fdc\u7a0b\u56de\u6e90\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>4. \u5229\u7528Stale\u7b56\u7565\u63d0\u5347\u53ef\u7528\u6027\u4e0e\u547d\u4e2d<\/h3>\n<p>stale-while-revalidate\u5141\u8bb8\u8fb9\u7f18\u8fd4\u56de\u9648\u65e7\u5185\u5bb9\u540c\u65f6\u540e\u53f0\u5f02\u6b65\u56de\u6e90\u5237\u65b0\uff0c\u8fd9\u5728\u6d41\u91cf\u9ad8\u5cf0\u65f6\u80fd\u7ef4\u6301\u9ad8\u547d\u4e2d\u548c\u4f4e\u5ef6\u8fdf\u3002\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li>Cache-Control: public, max-age=300, stale-while-revalidate=30, stale-if-error=86400<\/li>\n<li>\u5bf9\u5173\u952e\u9875\u9762\u6216API\uff0c\u5982\u679c\u56de\u6e90\u5f02\u5e38\uff085xx\uff09\uff0c\u5141\u8bb8\u8fb9\u7f18\u7ee7\u7eed\u8fd4\u56de\u6700\u8fd1\u7f13\u5b58\u7684\u5185\u5bb9\u4ee5\u4fdd\u8bc1\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<h3>5. Cookies\u4e0eCache Partitioning\u7ba1\u7406<\/h3>\n<p>\u9ed8\u8ba4\u5c06Cookie\u89c6\u4e3aCache Key\u4f1a\u5bfc\u81f4\u7f13\u5b58\u788e\u7247\u3002\u5b9e\u8df5\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u5bf9\u9759\u6001\u8d44\u6e90\u5173\u95edCookie\u8f6c\u53d1\uff08Set-Cookie\u4f8b\u5916\uff09\u3002<\/li>\n<li>\u5bf9\u9700\u8981\u7528\u6237\u4e2a\u6027\u5316\u7684\u63a5\u53e3\uff0c\u4f7f\u7528Cache Partitioning\u6216\u4f4e\u7c92\u5ea6\u7f13\u5b58\uff08\u4f8b\u5982\u6309\u767b\u5f55\u72b6\u6001\u5206\u533a\uff09\uff0c\u907f\u514d\u5c06\u7528\u6237ID\u7eb3\u5165Cache Key\u3002<\/li>\n<\/ul>\n<h3>6. \u538b\u7f29\u4e0e\u5185\u5bb9\u534f\u5546\uff08Brotli\/Gzip\uff09<\/h3>\n<p>\u5f00\u542fBrotli\uff08EDGE\u5c42\uff09\u548cgzip\u538b\u7f29\u80fd\u51cf\u5c11\u5e26\u5bbd\u5e76\u63d0\u9ad8\u7f13\u5b58\u6548\u7387\u3002\u6ce8\u610f\u7f13\u5b58Key\u5e94\u5305\u542bAccept-Encoding\u6216\u7531CDN\u81ea\u52a8\u5206\u79bb\u4e0d\u540c\u538b\u7f29\u7248\u672c\u7684\u7f13\u5b58\u3002<\/p>\n<h3>7. 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