{"id":470,"date":"2020-12-24T16:33:02","date_gmt":"2020-12-24T08:33:02","guid":{"rendered":"http:\/\/blog.refusea.com\/?p=470"},"modified":"2020-12-24T16:33:02","modified_gmt":"2020-12-24T08:33:02","slug":"%e4%bb%8e-request_time-%e8%81%94%e6%83%b3%e5%88%b0-http-408-%e9%94%99%e8%af%af%e7%a0%81","status":"publish","type":"post","link":"https:\/\/refusea.com\/?p=470","title":{"rendered":"\u4ece request_time \u8054\u60f3\u5230 HTTP 408 \u9519\u8bef\u7801"},"content":{"rendered":"<h2>\u80cc\u666f<\/h2>\n<p>\u4e4b\u524d\u7814\u7a76\u8fc7\u4e00\u756a <a href=\"https:\/\/refusea.com\/?p=448\" title=\"http \u9519\u8bef\u7801\">http \u9519\u8bef\u7801<\/a><\/p>\n<p>\u5176\u4e2d\uff0c\u5bf9 408 \u9519\u8bef\u7801\u672a\u5f97\u5230\u6709\u4ef7\u503c\u7684\u7ed3\u8bba\uff0c\u7559\u4e0b\u4e86\u4e00\u809a\u5b50\u7591\u95ee\uff1b\u6700\u8fd1\u670b\u53cb\u9047\u5230\u4e2a\u5947\u602a\u73b0\u8c61\uff0c\u6211\u53c8\u5bf9 408 \u8fdb\u884c\u4e86\u4e00\u756a\u7814\u7a76<\/p>\n<h2>\u5947\u602a\u73b0\u8c61<\/h2>\n<p>\u5148\u770b\u4e0b\u56fe<br \/>\n<img decoding=\"async\" src=\"https:\/\/static.refusea.com\/2020\/12\/reqtime1.png\" alt=\"\" \/><\/p>\n<p>\u670b\u53cb\u7684\u539f\u8bdd\u662f<\/p>\n<blockquote>\n<p>nginx \u7684\u8017\u65f6\u8981\u6bd4\u53cd\u5411\u4ee3\u7406\u7684\u591a\u7684\u591a<br \/>\n\u6709\u4ec0\u4e48\u60f3\u6cd5<\/p>\n<\/blockquote>\n<p>\u6211\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u7528\u6237\u63d0\u4ea4\u6570\u636e\u91cf\u592a\u5927\uff0c\u4f8b\u5982\u4e0a\u4f20\u89c6\u9891\uff0c\u8fd9\u6837 ng \u63a5\u6536\u4e0a\u4f20\u6570\u636e\u9700\u8981\u5927\u91cf\u65f6\u95f4\uff0c\u800c\u540e\u7aef jetty\/tomcat \u7684\u5904\u7406\u4ec5\u4ec5\u662f\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u8fd9\u6837\u5f88\u7b26\u5408\u4e0a\u56fe ng \u8017\u65f6 60 \u591a\u79d2\u800c\u540e\u7aef\u8017\u65f6 460 \u591a\u6beb\u79d2\u7684\u73b0\u8c61<\/p>\n<p>\u4f46\u670b\u53cb\u8868\u793a\u8fd8\u6709\u5176\u4ed6\u53ef\u80fd<\/p>\n<blockquote>\n<p>\u5f88\u591a\u8bf7\u6c42\u90fd\u662f\u70b9\u4e2a\u8d5e, \u6253\u5f00\u89c6\u9891\u628a\u64ad\u653e\u6b21\u6570 +1<br \/>\n\u8fd9\u5ba2\u6237\u7aef\u5e94\u8be5\u4e0d\u4f1a\u8017\u65f6\u7684<\/p>\n<\/blockquote>\n<p>\u6211\u7814\u7a76\u4e86\u4e00\u4e0b <code>$request_time<\/code> \u8fd9\u4e2a ng \u5185\u5d4c\u53d8\u91cf\uff0c\u5176\u8bf4\u660e\u5982\u4e0b<\/p>\n<blockquote>\n<p>$request_time<\/p>\n<p>request processing time in seconds with a milliseconds resolution (1.3.9, 1.2.6); time elapsed since the first bytes were read from the client<\/p>\n<\/blockquote>\n<p>\u90a3\u4e48\u6211\u89c9\u5f97\u53ef\u4ee5\u5f97\u51fa\u4ee5\u4e0b\u516c\u5f0f<\/p>\n<pre><code>$request_time = \u63a5\u6536\u6570\u636e\u65f6\u95f4 + $upstream_response_time + \u53d1\u9001\u6570\u636e\u65f6\u95f4<\/code><\/pre>\n<p>\u73b0\u5728\u7684\u60c5\u51b5\u662f <code>$request_time &gt;&gt; $upstream_response_time<\/code>\uff0c\u90a3\u4e48\u95ee\u9898\u80af\u5b9a\u662f\u51fa\u5728 <code>\u63a5\u6536\u6570\u636e<\/code> \u6216 <code>\u53d1\u9001\u6570\u636e<\/code> \u9636\u6bb5<\/p>\n<h2>\u5206\u6790<\/h2>\n<ul>\n<li>\u53d1\u9001\u6570\u636e\uff0c\u662f\u53d1\u9001\u5230\u672c\u5730\u7f13\u51b2\u533a\uff0c\u8fd8\u662f\u53d1\u9001\u5230\u5ba2\u6237\u7aef\u5e76\u63a5\u6536\u5230 ACK\uff1f\u5148\u5047\u5b9a\u662f\u53d1\u9001\u5230\u672c\u5730\u7f13\u51b2\u533a\u5427\uff0c\u90a3\u4e48\u53d1\u9001\u6570\u636e\u65f6\u95f4\u57fa\u672c\u662f\u53ef\u4ee5\u5ffd\u7565\u7684<\/li>\n<li>\u5f53\u7528\u6237\u64cd\u4f5c\u662f\u4e0a\u4f20\u5927\u6587\u4ef6\u65f6\uff0c\u63a5\u6536\u6570\u636e\u80af\u5b9a\u662f\u6bd4\u8f83\u8017\u65f6\u7684<\/li>\n<li>\u5f53\u7528\u6237\u7f51\u901f\u8f83\u6162\u65f6\uff0c\u63a5\u6536\u6570\u636e\u80af\u5b9a\u4e5f\u662f\u6bd4\u8f83\u8017\u65f6\u7684<\/li>\n<\/ul>\n<p>\u90a3\u4e48\u670b\u53cb\u7684\u8fd9\u4e2a\u65e5\u5fd7\u4f53\u73b0\u51fa\u7684 nginx \u7684\u8017\u65f6\u8981\u6bd4\u53cd\u5411\u4ee3\u7406\u7684\u591a\u7684\u591a \u7684\u73b0\u8c61\uff0c\u4e5f\u5c31\u6709\u4e86\u89e3\u91ca\uff1a\u7528\u6237\u6b63\u5904\u4e8e\u6162\u7f51\u7edc\uff08\u4f8b\u5982 2G \u7f51\u7edc\uff09\u4e2d<\/p>\n<h2>HTTP 408<\/h2>\n<p>\u8bf4\u5230\u8fd9\u91cc\uff0c\u518d\u56de\u5934\u770b 408 \u9519\u8bef\u7801<\/p>\n<p>\u4e4b\u524d\u4e00\u76f4\u8ba4\u4e3a 408 \u662f\u5728 <code>\u63a5\u6536\u6570\u636e<\/code> \u9636\u6bb5\u53d1\u751f\u7684\uff0c\u4f46\u662f\u73b0\u5728\u6211\u89c9\u5f97\u5e94\u8be5\u662f\u5728\u6574\u4e2a <code>request<\/code> \u9636\u6bb5\u53d1\u751f\uff0c\u5373\u8fd8\u5e94\u8be5\u5305\u62ec <code>$upstream_response_time<\/code> \u548c <code>\u53d1\u9001\u6570\u636e<\/code> \u9636\u6bb5\uff0c\u53ea\u6709\u8fd9\u6837\u624d\u80fd\u89e3\u91ca\u4e0b\u9762\u7684\u65e5\u5fd7<\/p>\n<pre><code class=\"language-log\">2020-03-02T00:00:01+00:00 408 166679257 1 157.37.132.68 - 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