{"id":1432,"date":"2017-05-12T19:52:44","date_gmt":"2017-05-12T11:52:44","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=1432"},"modified":"2017-05-12T20:15:17","modified_gmt":"2017-05-12T12:15:17","slug":"nginx-http%e7%bc%93%e5%ad%98%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=1432","title":{"rendered":"Nginx HTTP\u7f13\u5b58\u8bbe\u7f6e"},"content":{"rendered":"<p>\n\t<a href=\"http:\/\/nginx.org\/\" name=\"nginx\" target=\"_blank\" title=\"nginx\">Nginx<\/a>\u63d0\u4f9b\u4e86expires\u3001etag\u3001if-modified-since\u6307\u4ee4\u6765\u5b9e\u73b0\u6d4f\u89c8\u5668\u7f13\u5b58\u63a7\u5236\u3002\n<\/p>\n<h2>\n\texpires<br \/>\n<\/h2>\n<p>\n\t\u5982\u679c\u6211\u4eec\u4f7f\u7528Nginx\u4f5c\u4e3a\u9759\u6001\u8d44\u6e90\u670d\u52a1\u5668\uff0c\u90a3\u4e48\u53ef\u4ee5\u4f7f\u7528expires\u8fdb\u884c\u7f13\u5b58\u63a7\u5236\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\nlocation \/img {\r\n\t alias \/export\/img\/;\r\n\t expires 1d;\r\n}<\/pre>\n<p>\n\t\u5f53\u6211\u4eec\u8bbf\u95ee\u9759\u6001\u8d44\u6e90\u65f6\uff0c\u5982http:\/\/www.xttblog.com\/wp-content\/uploads\/2016\/04\/gaollg1.gif\uff0c\u5c06\u5f97\u5230\u7c7b\u4f3c\u5982\u4e0b\u7684\u54cd\u5e94\u5934\u3002\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"HTTP \u8bf7\u6c42\u54cd\u5e94\u5934\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201705\/12\/1494589001_399552.png\" style=\"width: 238px;height: 178px\" \/>\n<\/p>\n<p>\n\t\u5bf9\u4e8e\u9759\u6001\u8d44\u6e90\u4f1a\u81ea\u52a8\u6dfb\u52a0ETag\uff0c\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0etag off\u6307\u4ee4\u7981\u6b62\u751f\u6210ETag\u3002\u5982\u679c\u662f\u9759\u6001\u6587\u4ef6\uff0c\u90a3\u4e48Last-Modified\u503c\u4e3a\u6587\u4ef6\u7684\u6700\u540e\u4fee\u6539\u65f6\u95f4\u3002Expires\u662f\u6839\u636e\u5f53\u524d\u670d\u52a1\u5668\u7cfb\u7edf\u65f6\u95f4\u7b97\u51fa\u6765\u7684\u3002\u5982\u4e0aNginx\u914d\u7f6e\u7684\u8ba1\u7b97\u903b\u8f91\uff08\u5b9e\u9645\u8ba1\u7b97\u903b\u8f91\u6bd4\u8fd9\u4e2a\u591a\uff0c\u5177\u4f53\u53c2\u8003\u5b98\u65b9\u6587\u6863\uff09\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\nif (expires == NGX_HTTP_EXPIRES_ACCESS||r-&gt;headers_out.last_modified_ time == -1) {\r\n   max_age = expires_time;\r\n   expires_time += now;\r\n}<\/pre>\n<h2>\n\tif-modified-since<br \/>\n<\/h2>\n<p>\n\t\u6b64\u6307\u4ee4\u7528\u4e8e\u6307\u5b9aNginx\u5982\u4f55\u62ff\u670d\u52a1\u7aef\u7684Last-Modified\u548c\u6d4f\u89c8\u5668\u7aef\u7684if-modified- since\u65f6\u95f4\u8fdb\u884c\u6bd4\u8f83\uff0c\u9ed8\u8ba4&ldquo;if_modified_since exact&rdquo;\u8868\u793a\u7cbe\u786e\u5339\u914d\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528&ldquo;if_modified_since _before&rdquo;\u8868\u793a\u53ea\u8981\u6587\u4ef6\u7684\u6700\u540e\u4fee\u6539\u65f6\u95f4\u65e9\u4e8e\u6216\u7b49\u4e8e\u6d4f\u89c8\u5668\u7aef\u7684if-modified-since\u65f6\u95f4\uff0c\u5c31\u8fd4\u56de304\u3002\n<\/p>\n<h2>\n\tnginx proxy_pass<br \/>\n<\/h2>\n<p>\n\t\u4f7f\u7528Nginx\u4f5c\u4e3a\u53cd\u5411\u4ee3\u7406\u65f6\uff0c\u8bf7\u6c42\u4f1a\u5148\u8fdb\u5165Nginx\uff0c\u7136\u540eNginx\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u540e\u7aef\u5e94\u7528\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"nginx proxy_pass\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201705\/12\/1494589135_672221.png\" style=\"width: 148px;height: 237px\" \/>\n<\/p>\n<p>\n\t\u9996\u5148\u914d\u7f6eupstream\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\nupstream backend_tomcat {\r\n   server 192.168.61.1:9080max_fails=10 fail_timeout=10s weight=5;\r\n}<\/pre>\n<p>\n\t\u63a5\u7740\u914d\u7f6elocation\n<\/p>\n<pre class=\"brush:plain;\">\r\nlocation = \/cache {\r\n   proxy_pass http:\/\/backend_tomcat\/cache$is_args$args;\r\n}<\/pre>\n<p>\n\t\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5982http:\/\/www.xttblog.com\/?p=1144\u8bbf\u95eeNginx\uff0cNginx\u4f1a\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u540e\u7aefJava\u5e94\u7528\u3002\u4e5f\u5c31\u662f\u8bf4Nginx\u53ea\u662f\u505a\u4e86\u76f8\u5173\u7684\u8f6c\u53d1\uff08\u8d1f\u8f7d\u5747\u8861\uff09\uff0c\u5e76\u6ca1\u6709\u5bf9\u8bf7\u6c42\u548c\u54cd\u5e94\u505a\u4ec0\u4e48\u5904\u7406\u3002<br \/>\n\t\u5047\u8bbe\u5bf9\u540e\u7aef\u8fd4\u56de\u7684\u8fc7\u671f\u65f6\u95f4\u9700\u8981\u8c03\u6574\uff0c\u53ef\u4ee5\u6dfb\u52a0Expires\u6307\u4ee4\u5230location\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\nlocation = \/cache {\r\n   proxy_pass http:\/\/backend_tomcat\/cache$is_args$args;\r\n   expires 5s;\r\n}<\/pre>\n<p>\n\t\u7136\u540e\u518d\u8bf7\u6c42\u76f8\u5173\u7684URL\uff0c\u5c06\u5f97\u5230\u5982\u4e0b\u54cd\u5e94\u3002\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"HTTP \u54cd\u5e94\u4e2d\u7684 Expires\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201705\/12\/1494589344_870472.png\" style=\"width: 229px;height: 118px\" \/>\n<\/p>\n<p>\n\t\u8fc7\u671f\u65f6\u95f4\u76f8\u5173\u7684\u54cd\u5e94\u5934\u88abExpires\u6307\u4ee4\u66f4\u6539\u4e86\uff0c\u4f46\u662flast-modified\u662f\u6ca1\u6709\u53d8\u7684\u3002<br \/>\n\t\u5373\u4f7f\u6211\u4eec\u66f4\u6539\u4e86\u7f13\u5b58\u8fc7\u671f\u5934\uff0c\u4f46Nginx\u81ea\u5df1\u6ca1\u6709\u5bf9\u8fd9\u4e9b\u5185\u5bb9\u505a\u4ee3\u7406\u5c42\u7f13\u5b58\uff0c\u6bcf\u6b21\u8bf7\u6c42\u8fd8\u662f\u8981\u5230\u540e\u7aef\u9a8c\u8bc1\u7684\uff0c\u5047\u8bbe\u5728\u8fc7\u671f\u65f6\u95f4\u5185\uff0c\u8fd9\u4e9b\u9a8c\u8bc1\u5728Nginx\u8fd9\u4e00\u5c42\u9a8c\u8bc1\u5c31\u53ef\u4ee5\u4e86\uff0c\u4e0d\u9700\u8981\u5230\u540e\u7aef\u9a8c\u8bc1\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u540e\u7aef\u5f88\u5927\u7684\u538b\u529b\u3002\u5373\u6574\u4f53\u6d41\u7a0b\u5982\u4e0b\u3002\n<\/p>\n<ol>\n<li>\n\t\t\u6d4f\u89c8\u5668\u53d1\u8d77\u8bf7\u6c42\uff0c\u9996\u5148\u5230Nginx\uff0cNginx\u6839\u636eURL\u5728Nginx\u672c\u5730\u67e5\u627e\u662f\u5426\u6709\u4ee3\u7406\u5c42\u672c\u5730\u7f13\u5b58\u3002\n\t<\/li>\n<li>\n\t\tNginx\u6ca1\u6709\u627e\u5230\u672c\u5730\u7f13\u5b58\uff0c\u5219\u8bbf\u95ee\u540e\u7aef\u83b7\u53d6\u6700\u65b0\u7684\u6587\u6863\uff0c\u5e76\u653e\u5165\u5230Nginx\u672c\u5730\u7f13\u5b58\u4e2d\uff0c\u8fd4\u56de200\u72b6\u6001\u7801\u548c\u6700\u65b0\u7684\u6587\u6863\u7ed9\u6d4f\u89c8\u5668\u3002\n\t<\/li>\n<li>\n\t\tNginx\u627e\u5230\u672c\u5730\u7f13\u5b58\uff0c\u9996\u5148\u9a8c\u8bc1\u6587\u6863\u662f\u5426\u8fc7\u671f\uff08Cache-Control:max-age=5\uff09\uff0c\u5982\u679c\u8fc7\u671f\uff0c\u5219\u8bbf\u95ee\u540e\u7aef\u83b7\u53d6\u6700\u65b0\u7684\u6587\u6863\uff0c\u5e76\u653e\u5165Nginx\u672c\u5730\u7f13\u5b58\u4e2d\uff0c\u8fd4\u56de200\u72b6\u6001\u7801\u548c\u6700\u65b0\u7684\u6587\u6863\u7ed9\u6d4f\u89c8\u5668\uff1b\u5982\u679c\u6587\u6863\u6ca1\u6709\u8fc7\u671f\uff0c\u5373if-modified-since\u4e0e\u7f13\u5b58\u6587\u6863\u7684last-modified\u5339\u914d\uff0c\u5219\u8fd4\u56de304\u72b6\u6001\u7801\u7ed9\u6d4f\u89c8\u5668\u3002\n\t<\/li>\n<\/ol>\n<p>\n\t\u5185\u5bb9\u4e0d\u9700\u8981\u8bbf\u95ee\u540e\u7aef\uff0c\u5373\u4e0d\u9700\u8981\u540e\u7aef\u52a8\u6001\u8ba1\u7b97\/\u6e32\u67d3\u7b49\uff0c\u76f4\u63a5Nginx\u4ee3\u7406\u5c42\u5c31\u628a\u5185\u5bb9\u8fd4\u56de\u4e86\uff0c\u901f\u5ea6\u66f4\u5feb\uff0c\u5185\u5bb9\u8d8a\u63a5\u8fd1\u4e8e\u7528\u6237\u901f\u5ea6\u8d8a\u5feb\u3002\u50cfApacheTraffic Server\u3001Squid\u3001Varnish\u3001Nginx\u7b49\u6280\u672f\u90fd\u53ef\u4ee5\u7528\u6765\u8fdb\u884c\u5185\u5bb9\u7f13\u5b58\u3002\u8fd8\u6709CDN\u6280\u672f\u5c31\u662f\u7528\u6765\u52a0\u901f\u7528\u6237\u8bbf\u95ee\u7684\u3002\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"Nginx \u914d\u5408 CDN\u6280\u672f\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201705\/12\/1494589481_721230.png\" style=\"width: 401px;height: 249px\" \/>\n<\/p>\n<p>\n\t\u5373\u7528\u6237\u9996\u5148\u8bbf\u95ee\u5230\u5168\u56fd\u5404\u5730\u7684CDN\u8282\u70b9\uff08\u4f7f\u7528\u5982ATS\u3001Squid\u5b9e\u73b0\uff09\uff0c\u5982\u679cCDN\u6ca1\u547d\u4e2d\uff0c\u5219\u4f1a\u56de\u6e90\u5230\u4e2d\u592eNginx\u96c6\u7fa4\uff0c\u8be5\u96c6\u7fa4\u505a\u4e8c\u7ea7\u7f13\u5b58\uff0c\u5982\u679c\u6ca1\u6709\u547d\u4e2d\u7f13\u5b58\uff08\u8be5\u96c6\u7fa4\u7684\u7f13\u5b58\u4e0d\u662f\u5fc5\u987b\u7684\uff0c\u8981\u6839\u636e\u5b9e\u9645\u547d\u4e2d\u60c5\u51b5\u7b49\u51b3\u5b9a\uff09\uff0c\u5219\u6700\u540e\u56de\u6e90\u5230\u540e\u7aef\u5e94\u7528\u96c6\u7fa4\u3002\n<\/p>\n<h2>\n\tNginx\u4ee3\u7406\u5c42\u7f13\u5b58<br \/>\n<\/h2>\n<p>\n\tNginx\u4ee3\u7406\u5c42\u7f13\u5b58\u914d\u7f6e\u3002HTTP\u6a21\u5757\u914d\u7f6e\uff1a\n<\/p>\n<pre class=\"brush:plain;\">\r\nproxy_buffering                  on;\r\nproxy_buffer_size                4k;\r\nproxy_buffers                    5124k;\r\nproxy_busy_buffers_size          64k;\r\nproxy_cache_path                 \/export\/cache\/proxy_cachelevels=1:2 keys_zone=cache:512m inactive=5m max_size=8g use_temp_path=off;\r\n#proxy timeout\r\nproxy_connect_timeout            3s;\r\nproxy_read_timeout               5s;\r\nproxy_send_timeout               5s;<\/pre>\n<p>\n\tproxy_cache_path\u6307\u4ee4\u914d\u7f6e\u3002\n<\/p>\n<p>\n\tlevels=1:2\uff1a\u8868\u793a\u521b\u5efa\u4e24\u7ea7\u76ee\u5f55\u7ed3\u6784\uff0c\u7f13\u5b58\u76ee\u5f55\u7684\u7b2c\u4e00\u7ea7\u76ee\u5f55\u662f1\u4e2a\u5b57\u7b26\uff0c\u7b2c\u4e8c\u7ea7\u76ee\u5f55\u662f2\u4e2a\u5b57\u7b26\uff0c\u6bd4\u5982\/export\/cache\/proxy_cache\/7\/3c\/\uff0c\u5982\u679c\u5c06\u6240\u6709\u6587\u4ef6\u653e\u5728\u4e00\u7ea7\u76ee\u5f55\u4e0b\u7684\u8bdd\uff0c\u6587\u4ef6\u91cf\u5f88\u5927\uff0c\u4f1a\u5bfc\u81f4\u6587\u4ef6\u8bbf\u95ee\u6162\u3002<br \/>\n\tkeys_zone=cache:512m \uff1a\u8bbe\u7f6e\u5b58\u50a8\u6240\u6709\u7f13\u5b58key\u548c\u76f8\u5173\u4fe1\u606f\u7684\u5171\u4eab\u5185\u5b58\u533a\uff0c1M\u5927\u7ea6\u80fd\u5b58\u50a88000\u4e2akey\u3002<br \/>\n\tinactive=5m \uff1ainactive\u6307\u5b9a\u88ab\u7f13\u5b58\u7684\u5185\u5bb9\u591a\u4e45\u4e0d\u88ab\u8bbf\u95ee\u5c06\u4ece\u7f13\u5b58\u4e2d\u79fb\u9664\uff0c\u4ee5\u4fdd\u8bc1\u5185\u5bb9\u7684\u65b0\u9c9c\uff0c\u9ed8\u8ba4\u4e3a10\u5206\u949f\u3002<br \/>\n\tmax_size=8g \uff1a\u6700\u5927\u7f13\u5b58\u9600\u503c\uff0c&ldquo;cache manager&rdquo;\u8fdb\u7a0b\u4f1a\u76d1\u63a7\u6700\u5927\u7f13\u5b58\u5927\u5c0f\uff0c\u5f53\u7f13\u5b58\u8fbe\u5230\u8be5\u9600\u503c\u65f6\uff0c\u8be5\u8fdb\u7a0b\u5c06\u4ece\u7f13\u5b58\u4e2d\u79fb\u9664\u6700\u8fd1\u6700\u5c11\u8bbf\u95ee\u7684\u5185\u5bb9\u3002<br \/>\n\tuse_temp_path\uff1a\u5982\u679c\u4e3aon\uff0c\u5219\u5185\u5bb9\u9996\u5148\u88ab\u5199\u5165\u4e34\u65f6\u6587\u4ef6\uff08proxy_temp_path \uff09\uff0c\u7136\u540e\u91cd\u547d\u540d\u5230proxy_cache_path\u6307\u5b9a\u7684\u76ee\u5f55\uff1b\u5982\u679c\u8bbe\u7f6e\u4e3aoff\uff0c\u5219\u5185\u5bb9\u76f4\u63a5\u88ab\u5199\u5165\u5230proxy_cache_path\u6307\u5b9a\u7684\u76ee\u5f55\uff0c\u5982\u679c\u9700\u8981cache\u5efa\u8baeoff\uff0c\u5219\u8be5\u7279\u6027\u662f1.7.10\u63d0\u4f9b\u7684\u3002\n<\/p>\n<h2>\n\tnginx \u7684 location\u914d\u7f6e<br \/>\n<\/h2>\n<pre class=\"brush:plain;\">\r\nlocation = \/cache {\r\n     proxy_cache cache;\r\n     proxy_cache_key$scheme$proxy_host$request_uri;\r\n     proxy_cache_valid 200 5s;\r\n     proxy_passhttp:\/\/backend_tomcat\/cache$is_args$args;\r\n    add_header cache-status$upstream_cache_status;\r\n}<\/pre>\n<h2>\n\t\u7f13\u5b58\u76f8\u5173\u914d\u7f6e<br \/>\n<\/h2>\n<p>\n\tproxy_cache\uff1a\u6307\u5b9a\u4f7f\u7528\u54ea\u4e2a\u5171\u4eab\u5185\u5b58\u533a\u5b58\u50a8\u7f13\u5b58\u4fe1\u606f\u3002<br \/>\n\tproxy_cache_key \uff1a\u8bbe\u7f6e\u7f13\u5b58\u4f7f\u7528\u7684key\uff0c\u9ed8\u8ba4\u4e3a\u5b8c\u6574\u7684\u8bbf\u95eeURL\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8bbe\u7f6e\u7f13\u5b58key\u3002<br \/>\n\tproxy_cache_valid 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cache-status $upstream_cache_status\u5728\u54cd\u5e94\u5934\u4e2d\u6dfb\u52a0\u7f13\u5b58\u547d\u4e2d\u7684\u72b6\u6001\u3002<br \/>\n\tHIT\uff1a\u7f13\u5b58\u547d\u4e2d\uff0c\u76f4\u63a5\u8fd4\u56de\u7f13\u5b58\u4e2d\u5185\u5bb9\uff0c\u4e0d\u56de\u6e90\u5230\u540e\u7aef\u3002<br \/>\n\tMISS\uff1a\u7f13\u5b58\u672a\u547d\u4e2d\uff0c\u56de\u6e90\u5230\u540e\u7aef\u83b7\u53d6\u6700\u65b0\u7684\u5185\u5bb9\u3002<br \/>\n\tEXPIRED\uff1a\u7f13\u5b58\u547d\u4e2d\u4f46\u8fc7\u671f\u4e86\uff0c\u56de\u6e90\u5230\u540e\u7aef\u83b7\u53d6\u6700\u65b0\u7684\u5185\u5bb9\u3002<br \/>\n\tUPDATING\uff1a\u7f13\u5b58\u5df2\u8fc7\u671f\u4f46\u6b63\u5728\u88ab\u522b\u7684Nginx Worker\u8fdb\u7a0b\u66f4\u65b0\uff0c\u914d\u7f6e\u4e86proxy_cache_use_stale updating\u6307\u4ee4\u65f6\u4f1a\u5b58\u5728\u8be5\u72b6\u6001\u3002<br \/>\n\tSTALE\uff1a\u7f13\u5b58\u5df2\u8fc7\u671f\uff0c\u4f46\u56e0\u540e\u7aef\u670d\u52a1\u51fa\u73b0\u4e86\u95ee\u9898\uff08\u6bd4\u5982\u540e\u7aef\u670d\u52a1\u6302\u4e86\uff09\u8fd4\u56de\u8fc7\u671f\u7684\u54cd\u5e94\uff0c\u914d\u7f6e\u4e86\u5982proxy_cache_use_stale error timeout\u6307\u4ee4\u540e\u4f1a\u51fa\u73b0\u8be5\u72b6\u6001\u3002<br \/>\n\tREVALIDATED\uff1a\u542f\u7528proxy_cache_revalidate\u6307\u4ee4\u540e\uff0c\u5f53\u7f13\u5b58\u5185\u5bb9\u8fc7\u671f\u65f6\uff0cNginx\u901a\u8fc7\u4e00\u6b21if-modified-since\u7684\u8bf7\u6c42\u5934\u53bb\u9a8c\u8bc1\u7f13\u5b58\u5185\u5bb9\u662f\u5426\u8fc7\u671f\uff0c\u6b64\u65f6\u4f1a\u8fd4\u56de\u8be5\u72b6\u6001\u3002<br \/>\n\tBYPASS\uff1aproxy_cache_bypass\u6307\u4ee4\u6709\u6548\u65f6\uff0c\u5f3a\u5236\u56de\u6e90\u5230\u540e\u7aef\u83b7\u53d6\u5185\u5bb9\uff0c\u5373\u4f7f\u5df2\u7ecf\u7f13\u5b58\u4e86\u3002\n<\/p>\n<h2>\n\tproxy_cache_min_uses<br \/>\n<\/h2>\n<p>\n\t\u7528\u4e8e\u63a7\u5236\u8bf7\u6c42\u591a\u5c11\u6b21\u540e\u54cd\u5e94\u624d\u88ab\u7f13\u5b58\u3002\u9ed8\u8ba4&ldquo;proxy_cache_min_uses1;&rdquo;\uff0c\u5982\u679c\u7f13\u5b58\u70ed\u70b9\u6bd4\u8f83\u96c6\u4e2d\u3001\u5b58\u50a8\u6709\u9650\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u8be5\u53c2\u6570\u6765\u6765\u51cf\u5c11\u7f13\u5b58\u6570\u91cf\u548c\u5199\u78c1\u76d8\u6b21\u6570\u3002\n<\/p>\n<h2>\n\tproxy_no_cache<br \/>\n<\/h2>\n<p>\n\t\u7528\u4e8e\u63a7\u5236\u4ec0\u4e48\u60c5\u51b5\u4e0b\u54cd\u5e94\u4e0d\u88ab\u7f13\u5b58\u3002\u6bd4\u5982\u914d\u7f6e&ldquo;proxy_no_cache$args_nocache&rdquo;\uff0c\u5982\u679c\u5e26\u7684nocache\u53c2\u6570\u503c\u81f3\u5c11\u6709\u4e00\u4e2a\u4e0d\u4e3a\u7a7a\u6216\u8005\u4e3a0\uff0c\u5219\u54cd\u5e94\u5c06\u4e0d\u88ab\u7f13\u5b58\u3002\n<\/p>\n<h2>\n\tproxy_cache_bypass<br \/>\n<\/h2>\n<p>\n\t\u7c7b\u4f3c\u4e8eproxy_no_cache\uff0c\u4f46\u662f\uff0c\u5176\u63a7\u5236\u4ec0\u4e48\u60c5\u51b5\u4e0d\u4f7f\u7528\u7f13\u5b58\u7684\u5185\u5bb9\uff0c\u800c\u662f\u76f4\u63a5\u5230\u540e\u7aef\u83b7\u53d6\u6700\u65b0\u7684\u5185\u5bb9\u3002\u5982\u679c\u547d\u4e2d\uff0c\u5219$upstream_cache_status\u4e3aBYPASS\u3002\n<\/p>\n<h2>\n\tproxy_cache_use_stale<br \/>\n<\/h2>\n<p>\n\t\u5f53\u5bf9\u7f13\u5b58\u5185\u5bb9\u7684\u8fc7\u671f\u65f6\u95f4\u4e0d\u654f\u611f\uff0c\u6216\u8005\u540e\u7aef\u670d\u52a1\u51fa\u95ee\u9898\u65f6\uff0c\u5373\u4f7f\u7f13\u5b58\u7684\u5185\u5bb9\u4e0d\u65b0\u9c9c\u4e5f\u603b\u6bd4\u8fd4\u56de\u9519\u8bef\u7ed9\u7528\u6237\u5f3a\uff08\u7c7b\u4f3c\u4e8e\u6258\u5e95\uff09\uff0c\u6b64\u65f6\u53ef\u4ee5\u914d\u7f6e\u8be5\u53c2\u6570\uff0c\u5982&ldquo;proxy_cache_use_stale error timeout http_500 http_502 http_503 http_504&rdquo;\uff0c\u5373\u5982\u679c\u51fa\u73b0\u8d85\u65f6\u3001\u540e\u7aef\u8fde\u63a5\u51fa\u9519\u3001500\u3001502\u3001503\u7b49\u9519\u8bef\u65f6\uff0c\u5219\u5373\u4f7f\u7f13\u5b58\u5185\u5bb9\u5df2\u8fc7\u671f\u4e5f\u5148\u8fd4\u56de\u7ed9\u7528\u6237\uff0c\u6b64\u65f6$upstream_cache_status\u4e3aSTALE\u3002\u8fd8\u6709\u4e00\u4e2aupdating\u8868\u793a\u7f13\u5b58\u5df2\u8fc7\u671f\u4f46\u6b63\u5728\u88ab\u522b\u7684Nginx Worker\u8fdb\u7a0b\u66f4\u65b0\uff0c\u4f46\u5148\u8fd4\u56de\u4e86\u8fc7\u671f\u5185\u5bb9\uff0c\u6b64\u65f6$upstream_cache_status\u4e3aUPDATING\u3002\n<\/p>\n<h2>\n\tproxy_cache_revalidate<br \/>\n<\/h2>\n<p>\n\t\u5f53\u7f13\u5b58\u8fc7\u671f\u540e\uff0c\u5982\u679c\u5f00\u542f\u4e86proxy_cache_revalidate\uff0c\u5219\u4f1a\u53d1\u51fa\u4e00\u6b21if-modified-since\u6216if-none-match\u6761\u4ef6\u8bf7\u6c42\uff0c\u5982\u679c\u540e\u7aef\u8fd4\u56de304\uff0c\u5219\u6b64\u65f6$upstream_cache_status\u4e3aREVALIDATED\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u4e24\u4e2a\u597d\u5904\uff0c\u8282\u7701\u5e26\u5bbd\u548c\u51cf\u5c11\u5199\u78c1\u76d8\u7684\u6b21\u6570\u3002\n<\/p>\n<h2>\n\tproxy_cache_lock<br \/>\n<\/h2>\n<p>\n\t\u5f53\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8bf7\u6c42\u540c\u4e00\u4efd\u5185\u5bb9\u65f6\uff0c\u5982\u679c\u5f00\u542fproxy_cache_lock\uff08\u9ed8\u8ba4off\uff09\uff0c\u5219\u53ea\u6709\u4e00\u4e2a\u8bf7\u6c42\u88ab\u53d1\u9001\u81f3\u540e\u7aef\u3002\u5176\u4ed6\u8bf7\u6c42\u5c06\u7b49\u5f85\u8be5\u8bf7\u6c42\u7684\u8fd4\u56de\u3002\u5f53\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u8fd4\u56de\u540e\uff0c\u5176\u4ed6\u76f8\u540c\u8bf7\u6c42\u5c06\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u5185\u5bb9\u8fd4\u56de\u3002\u5f53\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u8d85\u8fc7\u4e86proxy_cache_lock_timeout\u8d85\u65f6\u65f6\u95f4\uff08\u9ed8\u8ba4\u4e3a5s\uff09\uff0c\u5219\u5176\u4ed6\u8bf7\u6c42\u5c06\u540c\u65f6\u8bf7\u6c42\u5230\u540e\u7aef\u6765\u83b7\u53d6\u54cd\u5e94\uff0c\u4e14\u54cd\u5e94\u4e0d\u4f1a\u88ab\u7f13\u5b58\uff08\u57281.7.8\u7248\u672c\u4e4b\u524d\u662f\u88ab\u7f13\u5b58\u7684\uff09\u3002\u542f\u7528proxy_cache_lock\u53ef\u4ee5\u5e94\u5bf9Dog-pile effect\uff08\u5f53\u67d0\u4e2a\u7f13\u5b58\u5931\u6548\u65f6\uff0c\u540c\u65f6\u6709\u5927\u91cf\u76f8\u540c\u7684\u8bf7\u6c42\u6ca1\u547d\u4e2d\u7f13\u5b58\uff0c\u800c\u540c\u65f6\u8bf7\u6c42\u5230\u540e\u7aef\uff0c\u4ece\u800c\u5bfc\u81f4\u540e\u7aef\u538b\u529b\u592a\u5927\uff0c\u6b64\u65f6\u9650\u5236\u4e00\u4e2a\u8bf7\u6c42\u53bb\u62ff\u5373\u53ef\uff09\u3002<br \/>\n\tproxy_cache_lock_age\u662f1.7.8\u65b0\u6dfb\u52a0\u7684\uff0c\u5982\u679c\u5728proxy_cache_lock_age\u6307\u5b9a\u7684\u65f6\u95f4\u5185\uff08\u9ed8\u8ba4\u4e3a5s\uff09\uff0c\u6700\u540e\u4e00\u4e2a\u53d1\u9001\u5230\u540e\u7aef\u8fdb\u884c\u65b0\u7f13\u5b58\u6784\u5efa\u7684\u8bf7\u6c42\u8fd8\u6ca1\u6709\u5b8c\u6210\uff0c\u5219\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u5c06\u88ab\u53d1\u9001\u5230\u540e\u7aef\u6765\u6784\u5efa\u7f13\u5b58\uff08\u56e0\u4e3a1.7.8\u7248\u672c\u4e4b\u540e\uff0cproxy_cache_lock_timeout\u8d85\u65f6\u4e4b\u540e\u8fd4\u56de\u7684\u5185\u5bb9\u662f\u4e0d\u7f13\u5b58\u7684\uff0c\u9700\u8981\u4e0b\u4e00\u6b21\u8bf7\u6c42\u6765\u6784\u5efa\u54cd\u5e94\u7f13\u5b58\uff09\u3002\n<\/p>\n<h2>\n\t\u6e05\u7406\u7f13\u5b58<br \/>\n<\/h2>\n<p>\n\t\u6709\u65f6\u7f13\u5b58\u7684\u5185\u5bb9\u662f\u9519\u8bef\u7684\uff0c\u9700\u8981\u624b\u5de5\u6e05\u7406\uff0cNginx\u4f01\u4e1a\u7248\u63d0\u4f9b\u4e86purger\u529f\u80fd\uff0c\u5bf9\u4e8e\u793e\u533a\u7248Nginx\u53ef\u4ee5\u8003\u8651\u4f7f\u7528ngx_cache_purge\uff08https:\/\/github.com\/FRiCKLE\/ ngx_cache_purge\uff09\u6a21\u5757\u8fdb\u884c\u6e05\u7406\u7f13\u5b58\u3002\n<\/p>\n<pre class=\"brush:plain;\">\r\nlocation ~ \/purge(\/.*) {\r\n   allow             127.0.0.1;\r\n   deny              all;\r\n   proxy_cache_purge cache$1$is_args$args;\r\n}<\/pre>\n<p>\n\t\u8be5\u65b9\u6cd5\u8981\u9650\u5236\u5176\u8bbf\u95ee\u6743\u9650\uff0c\u5982\u53ea\u5141\u8bb8\u5185\u7f51\u53ef\u4ee5\u8bbf\u95ee\u6216\u8005\u9700\u8981\u5bc6\u7801\u624d\u80fd\u8bbf\u95ee\u3002<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font 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