{"id":1197,"date":"2023-02-05T20:42:45","date_gmt":"2023-02-05T12:42:45","guid":{"rendered":"http:\/\/viplao.com\/?p=1197"},"modified":"2023-02-05T20:42:45","modified_gmt":"2023-02-05T12:42:45","slug":"it-%e6%95%85%e9%9a%9c%e6%b2%bb%e7%90%86-%e8%bf%90%e7%bb%b4%e6%95%91%e7%81%ab%e5%bf%85%e5%a4%87%ef%bc%9a%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e4%b8%8e%e7%b3%bb%e7%bb%9f%e4%bc%98%e5%8c%96%e6%89%8b","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2023\/02\/05\/it-%e6%95%85%e9%9a%9c%e6%b2%bb%e7%90%86-%e8%bf%90%e7%bb%b4%e6%95%91%e7%81%ab%e5%bf%85%e5%a4%87%ef%bc%9a%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e4%b8%8e%e7%b3%bb%e7%bb%9f%e4%bc%98%e5%8c%96%e6%89%8b\/","title":{"rendered":"IT \u6545\u969c\u6cbb\u7406 &#8211; \u8fd0\u7ef4\u6551\u706b\u5fc5\u5907\uff1a\u95ee\u9898\u6392\u67e5\u4e0e\u7cfb\u7edf\u4f18\u5316\u624b\u518c\uff08\u7ed3\u5408\u6559\u8bad\u73b0\u8eab\u8bf4\u6cd5\uff09"},"content":{"rendered":"\n<p>\u8f6f\u4ef6\u5de5\u7a0b\u9886\u57df\u5b58\u5728\u4e00\u4e2a\u5171\u8bc6\uff1a\u7ef4\u62a4\u4ee3\u7801\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u8981\u8fdc\u591a\u4e8e\u5199\u4ee3\u7801\u3002\u800c\u6574\u4e2a\u4ee3\u7801\u7ef4\u62a4\u8fc7\u7a0b\u4e2d\uff0c\u6700\u60ca\u5fc3\u52a8\u9b44\u4e0e\u6263\u4eba\u5fc3\u5f26\u7684\u90e8\u5206\uff0c\u83ab\u8fc7\u4e8e\u95ee\u9898\u6392\u67e5\uff08Trouble-shooting\uff09\u4e86\u3002\u7279\u522b\u662f\u90a3\u4e9b\u9700\u8981 7&#215;24 \u5c0f\u65f6\u4e0d\u95f4\u65ad\u7ef4\u62a4\u5728\u7ebf\u4e1a\u52a1\u7684\u4e00\u7ebf\u670d\u52a1\u7aef\u7a0b\u5e8f\u5458\u4eec\uff0c\u5927\u5927\u5c0f\u5c0f\u7684\u95ee\u9898\u6392\u67e5\u7ebf\u4e0a\u6551\u706b\u65e9\u5df2\u6210\u4e3a\u5bb6\u5e38\u4fbf\u996d\uff0c\u4e00\u4e0d\u5c0f\u5fc3\u53ef\u80fd\u5c31\u5403\u6210\u4e86\u81ea\u52a9\u9910 \u2014\u2014 \u7ad6\u7740\u8fdb\u8eba\u7740\u51fa\uff0c\u5403\u4e0d\u4e86\u4e5f\u515c\u4e0d\u4f4f\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u5206\u4eab\u4f5c\u8005\u5728\u670d\u52a1\u7aef\u95ee\u9898\u6392\u67e5\u65b9\u9762\u7684\u4e00\u4e9b\u7ecf\u9a8c\uff0c\u5305\u62ec\u5e38\u89c1\u95ee\u9898\u3001\u6392\u67e5\u6d41\u7a0b\u3001\u6392\u67e5\u5de5\u5177\uff0c\u7ed3\u5408\u5b9e\u9645\u9879\u76ee\u4e2d\u53d1\u751f\u8fc7\u7684\u60e8\u75db\u6848\u4f8b\u8fdb\u884c\u73b0\u8eab\u8bf4\u6cd5\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"678\" height=\"264\" src=\"http:\/\/viplao.com\/wp-content\/uploads\/2023\/02\/image-13.png\" alt=\"\" class=\"wp-image-1198\" srcset=\"http:\/\/viplao.com\/wp-content\/uploads\/2023\/02\/image-13.png 678w, http:\/\/viplao.com\/wp-content\/uploads\/2023\/02\/image-13-300x117.png 300w\" sizes=\"(max-width: 678px) 100vw, 678px\" \/><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/viplao.com\/index.php\/2023\/02\/05\/it-%e6%95%85%e9%9a%9c%e6%b2%bb%e7%90%86-%e8%bf%90%e7%bb%b4%e6%95%91%e7%81%ab%e5%bf%85%e5%a4%87%ef%bc%9a%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e4%b8%8e%e7%b3%bb%e7%bb%9f%e4%bc%98%e5%8c%96%e6%89%8b\/#%E4%B8%80_%E3%80%81%E9%97%AE%E9%A2%98%E6%8E%92%E6%9F%A5\" title=\"\u4e00 \u3001\u95ee\u9898\u6392\u67e5\">\u4e00 \u3001\u95ee\u9898\u6392\u67e5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/viplao.com\/index.php\/2023\/02\/05\/it-%e6%95%85%e9%9a%9c%e6%b2%bb%e7%90%86-%e8%bf%90%e7%bb%b4%e6%95%91%e7%81%ab%e5%bf%85%e5%a4%87%ef%bc%9a%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e4%b8%8e%e7%b3%bb%e7%bb%9f%e4%bc%98%e5%8c%96%e6%89%8b\/#%E4%BA%8C%E3%80%81%E7%B3%BB%E7%BB%9F%E4%BC%98%E5%8C%96\" title=\"\u4e8c\u3001\u7cfb\u7edf\u4f18\u5316\">\u4e8c\u3001\u7cfb\u7edf\u4f18\u5316<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%80_%E3%80%81%E9%97%AE%E9%A2%98%E6%8E%92%E6%9F%A5\"><\/span><strong>\u4e00 \u3001\u95ee\u9898\u6392\u67e5<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><strong>1\u3001\u5e38\u89c1\u95ee\u9898<\/strong><\/p>\n\n\n\n<p>Know Your Enemy\uff1a\u77e5\u5df1\u77e5\u5f7c\uff0c\u767e\u6218\u4e0d\u6b86\u3002<\/p>\n\n\n\n<p>\u65e5\u5e38\u9047\u5230\u7684\u5927\u90e8\u5206\u95ee\u9898\uff0c\u5927\u81f4\u53ef\u4ee5\u5f52\u5230\u5982\u4e0b\u51e0\u7c7b\uff1a<\/p>\n\n\n\n<ul>\n<li>\u903b\u8f91\u7f3a\u9677\uff1ae.g. NPE\u3001\u6b7b\u5faa\u73af\u3001\u8fb9\u754c\u60c5\u51b5\u672a\u8986\u76d6\u3002<\/li>\n\n\n\n<li>\u6027\u80fd\u74f6\u9888\uff1ae.g. \u63a5\u53e3 RT \u9661\u589e\u3001\u541e\u5410\u7387\u4e0a\u4e0d\u53bb\u3002<\/li>\n\n\n\n<li>\u5185\u5b58\u5f02\u5e38\uff1ae.g. GC \u5361\u987f\u3001\u9891\u7e41 FGC\u3001\u5185\u5b58\u6cc4\u9732\u3001OOM\u3002<\/li>\n\n\n\n<li>\u5e76\u53d1\/\u5206\u5e03\u5f0f\uff1ae.g. \u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u3001\u65f6\u949f\u4e0d\u540c\u6b65\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u95ee\u9898\uff1ae.g. \u51fa\u73b0\u810f\u6570\u636e\u3001\u5e8f\u5217\u5316\u5931\u8d25\u3002<\/li>\n\n\n\n<li>\u5b89\u5168\u95ee\u9898\uff1ae.g. DDoS \u653b\u51fb\u3001\u6570\u636e\u6cc4\u9732\u3002<\/li>\n\n\n\n<li>\u73af\u5883\u6545\u969c\uff1ae.g. \u5bbf\u4e3b\u673a\u5b95\u673a\u3001\u7f51\u7edc\u4e0d\u901a\u3001\u4e22\u5305\u3002<\/li>\n\n\n\n<li>\u64cd\u4f5c\u5931\u8bef\uff1ae.g. \u914d\u7f6e\u63a8\u9519\u3001\u5220\u5e93\u8dd1\u8def\uff08\u5371\u9669\u52a8\u4f5c\uff0c\u8bf7\u52ff\u5c1d\u8bd5..\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0a\u8ff0\u5206\u7c7b\u53ef\u80fd\u4e0d\u592a\u5b8c\u5907\u548c\u4e25\u8c28\uff0c\u60f3\u4f20\u8fbe\u7684\u70b9\u662f\uff1a\u4f60\u4e5f\u53ef\u4ee5\u79ef\u7d2f\u4e00\u4e2a\u8fd9\u6837\u7684 checklist\uff0c\u5f53\u9047\u5230\u95ee\u9898\u767e\u601d\u4e0d\u5f97\u5176\u89e3\u65f6\uff0c\u8010\u5fc3\u8fc7\u4e00\u904d\uff0c\u4e5f\u8bb8\u5f88\u5feb\u5c31\u80fd\u5bf9\u53f7\u5165\u5ea7\u3002<\/p>\n\n\n\n<p><strong>2\u3001\u6392\u67e5\u6d41\u7a0b<\/strong><\/p>\n\n\n\n<p>\u533b\u751f\uff1a\u5c0f\u738b\u4f60\u770b\uff0c\u8fd9\u4e2a\u4f24\u53e3\u7684\u5f62\u72b6\uff0c\u50cf\u4e0d\u50cf\u4e00\u6735\u6f02\u6d6e\u7684\u767d\u4e91\uff1f<\/p>\n\n\n\n<p>\u75c5\u4eba\uff1a&#8230;\u518d\u4e0d\u7ed9\u6211\u5305\u624e\u6b62\u8840\uff0c\u5c31\u8981\u53d8\u6210\u706b\u70e7\u4e91\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p5.itc.cn\/images01\/20200824\/b57f1228cd0d47d8bc6656b173cbb3b3.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u5feb\u901f\u6b62\u8840<\/strong><\/p>\n\n\n\n<p>\u95ee\u9898\u6392\u67e5\u7684\u7b2c\u4e00\u6b65\uff0c\u4e00\u5b9a\u662f\u5148\u628a\u8840\u6b62\u4f4f\uff0c\u53ca\u65f6\u6b62\u635f\u3002\u5982\u4f55\u5feb\u901f\u6b62\u8840\uff1f\u5e38\u89c1\u65b9\u5f0f\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul>\n<li>\u53d1\u5e03\u671f\u95f4\u5f00\u59cb\u62a5\u9519\uff0c\u4e14\u53d1\u5e03\u524d\u4e00\u5207\u6b63\u5e38\uff1f\u5565\u4e5f\u522b\u7ba1\uff0c\u5148\u56de\u6eda\u518d\u8bf4\uff0c\u6062\u590d\u6b63\u5e38\u540e\u518d\u6162\u6162\u6392\u67e5\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\u5df2\u7ecf\u7a33\u5b9a\u8fd0\u884c\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\uff0c\u7a81\u7136\u5f00\u59cb\u51fa\u73b0\u8fdb\u7a0b\u9000\u51fa\u73b0\u8c61\uff1f\u5f88\u53ef\u80fd\u662f\u5185\u5b58\u6cc4\u9732\uff0c\u9ed8\u9ed8\u4e0a\u91cd\u542f\u5927\u6cd5\u5427\u3002<\/li>\n\n\n\n<li>\u53ea\u6709\u5c11\u6570\u56fa\u5b9a\u673a\u5668\u62a5\u9519\uff1f\u8bd5\u8bd5\u9694\u79bb\u8fd9\u90e8\u5206\u673a\u5668\uff08\u5173\u95ed\u6d41\u91cf\u5165\u53e3\uff09\u3002<\/li>\n\n\n\n<li>\u5355\u7528\u6237\u6d41\u91cf\u7a81\u589e\u5bfc\u81f4\u670d\u52a1\u4e0d\u7a33\u5b9a\uff1f\u5982\u679c\u4e0d\u662f\u60f9\u4e0d\u8d77\u7684\u91d1\u4e3b\u7238\u7238\uff0c\u8bf7\u52c7\u6562\u63a8\u9001\u9650\u6d41\u89c4\u5219\u3002<\/li>\n\n\n\n<li>\u4e0b\u6e38\u4f9d\u8d56\u6302\u4e86\u5bfc\u81f4\u670d\u52a1\u96ea\u5d29\uff1f\u8fd8\u60f3\u4ec0\u4e48\u5462\uff0c\u964d\u7ea7\u9884\u6848\u8d70\u8d77\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4fdd\u7559\u73b0\u573a<\/strong><\/p>\n\n\n\n<p>\u8840\u6b62\u4f4f\u4e86\uff1f\u90a3\u4e48\u606d\u559c\u4f60\uff0c\u81f3\u5c11\u6545\u969c\u5f71\u54cd\u4e0d\u4f1a\u518d\u6269\u5927\u4e86\u3002\u5378\u4e0b\u9505\uff0c\u5148\u5598\u53e3\u6c14\u518d\u8bf4\u3002\u4e0b\u4e00\u6b65\uff0c\u5c31\u662f\u8981\u6839\u636e\u7ebf\u7d22\u627e\u51fa\u95ee\u9898\u5143\u51f6\u4e86\u3002\u4f5c\u4e3a\u4e00\u540d\u6392\u67e5\u8001\u624b\uff0c\u4f60\u9700\u8981\u6709\u5c3d\u91cf\u4fdd\u7559\u73b0\u573a\u7684\u610f\u8bc6\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul>\n<li>\u9694\u79bb\u4e00\u4e24\u53f0\u673a\u5668\uff1a\u5c06\u8fd9\u90e8\u5206\u673a\u5668\u5165\u53e3\u6d41\u91cf\u5173\u95ed\uff0c\u8ba9\u5b83\u4eec\u9759\u9759\u7b49\u5f85\u4f60\u7684\u68c0\u9605\u3002<\/li>\n\n\n\n<li>Dump \u5e94\u7528\u5feb\u7167\uff1a\u5e38\u7528\u7684\u5feb\u7167\u7c7b\u578b\u4e00\u822c\u5c31\u662f\u7ebf\u7a0b\u5806\u6808\u548c\u5806\u5185\u5b58\u6620\u5c04\u3002<\/li>\n\n\n\n<li>\u6240\u6709\u673a\u5668\u90fd\u56de\u6eda\u4e86\uff0c\u548b\u529e\uff1f\u522b\u614c\uff0c\u5982\u679c\u4f60\u7684\u5e94\u7528\u76d1\u63a7\u8fd0\u7ef4\u4f53\u7cfb\u8db3\u591f\u5065\u5168\uff0c\u90a3\u4e48\u4f60\u8fd8\u6709\u591a\u7ef4\u5ea6\u7684\u5386\u53f2\u6570\u636e\u53ef\u4ee5\u56de\u6eaf\uff1a\u5e94\u7528\u65e5\u5fd7\u3001\u4e2d\u95f4\u4ef6\u65e5\u5fd7\u3001GC \u65e5\u5fd7\u3001\u5185\u6838\u65e5\u5fd7\u3001Metrics \u6307\u6807\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5b9a\u4f4d\u539f\u56e0<\/strong><\/p>\n\n\n\n<p>OK\uff0c\u6392\u67e5\u7ebf\u7d22\u4e5f\u6709\u4e86\uff0c\u63a5\u4e0b\u6765\u8be5\u600e\u4e48\u5b9a\u4f4d\u5177\u4f53\u539f\u56e0\uff1f\u8fd9\u4e2a\u73af\u8282\u4f1a\u7efc\u5408\u8003\u9a8c\u4f60\u7684\u6280\u672f\u6df1\u5ea6\u3001\u4e1a\u52a1\u719f\u6089\u5ea6\u548c\u5b9e\u64cd\u7ecf\u9a8c\uff0c\u56e0\u4e3a\u539f\u56e0\u5f80\u5f80\u90fd\u5343\u5947\u767e\u602a\uff0c\u9700\u8981 case by case \u7684\u8ffd\u8e2a\u4e0e\u5206\u6790\u3002\u8fd9\u91cc\u7ed9\u51fa\u51e0\u4e2a\u6392\u67e5\u65b9\u5411\u4e0a\u7684\u5efa\u8bae\uff1a<\/p>\n\n\n\n<p>1\uff09\u5173\u8054\u8fd1\u671f\u53d8\u66f4\uff1a90% \u4ee5\u4e0a\u7684\u7ebf\u4e0a\u95ee\u9898\u90fd\u662f\u7531\u53d8\u66f4\u5f15\u53d1\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u96c6\u56e2\u5b89\u5168\u751f\u4ea7\u7684\u91cd\u70b9\u4e00\u76f4\u662f\u5728\u7ba1\u63a7\u201c\u53d8\u66f4\u201d\u3002\u6240\u4ee5\uff0c\u5148\u4e0d\u8981\u6025\u7740\u5426\u8ba4\uff08\u201c\u80af\u5b9a\u4e0d\u662f\u6211\u521a\u52a0\u7684\u90a3\u884c\u4ee3\u7801\u95ee\u9898\uff01\u201d\uff09\uff0c\u76f8\u4fe1\u7edf\u8ba1\u5b66\u6982\u7387\uff0c\u597d\u597d review \u4e0b\u8fd1\u671f\u7684\u53d8\u66f4\u5386\u53f2\uff08\u4ece\u8fd1\u81f3\u8fdc\uff09\u3002<\/p>\n\n\n\n<p>2\uff09\u5168\u94fe\u8def\u8ffd\u8e2a\u5206\u6790\uff1a\u5fae\u670d\u52a1\u548c\u4e2d\u53f0\u5316\u76db\u884c\u7684\u5f53\u4e0b\uff0c\u4e00\u6b21\u4e1a\u52a1\u8bf7\u6c42\u4e0d\u7ecf\u8fc7\u5341\u4e2a\u516b\u4e2a\u5e94\u7528\u5904\u7406\u4e00\u904d\uff0c\u90fd\u4e0d\u597d\u610f\u601d\u8bf4\u81ea\u5df1\u662f\u5199 Java \u7684\u3002\u6240\u4ee5\uff0c\u4e0d\u8981\u53ea\u76ef\u7740\u81ea\u5df1\u7684\u5e94\u7528\u4e0d\u653e\uff0c\u4f60\u9700\u8981\u628a\u6392\u67e5 scope \u653e\u5927\u5230\u5168\u94fe\u8def\u3002<\/p>\n\n\n\n<p>3\uff09\u8fd8\u539f\u4e8b\u4ef6\u65f6\u95f4\u7ebf\uff1a\u8bf7\u628a\u81ea\u5df1\u60f3\u8c61\u6210\u798f\u5c14\u6469\u65af\uff08\u67ef\u5357\u4e5f\u884c\uff09\uff0c\u6446\u5728\u4f60\u9762\u524d\u7684\u5c31\u662f\u4e00\u4e2a\u6848\u53d1\u73b0\u573a\uff0c\u4f60\u9700\u8981\u505a\u7684\u662f\u628a\u4e0d\u540c\u65f6\u95f4\u70b9\u7684\u6240\u6709\u4e8b\u4ef6\u7ebf\u7d22\u90fd\u4e32\u8d77\u6765\uff0c\u91cd\u5efa\u548c\u8fd8\u539f\u6574\u4e2a\u6848\u53d1\u8fc7\u7a0b\u3002\u8981\u76f8\u4fe1\uff0c\u65f6\u95f4\u6233\u662f\u4e0d\u4f1a\u9a97\u4eba\u7684\u3002<\/p>\n\n\n\n<p>4\uff09\u627e\u5230 Root Cause\uff1a\u6392\u67e5\u95ee\u9898\u591a\u4e86\u4f60\u4f1a\u53d1\u73b0\uff0c\u5f88\u591a\u7591\u4f3c\u539f\u56e0\u5f80\u5f80\u53ea\u662f\u53e6\u4e00\u4e2a\u66f4\u6df1\u5c42\u6b21\u539f\u56e0\u7684\u8868\u8c61\u7ed3\u679c\u4e4b\u4e00\u3002\u4f5c\u4e3a\u798f\u5c14\u6469\u65af\uff0c\u4f60\u6700\u9700\u8981\u627e\u5230\u7684\u662f\u5e55\u540e\u51f6\u624b\uff0c\u800c\u4e0d\u662f\u96c7\u4f63\u7684\u6740\u4eba\u72af \u2014\u2014 \u5426\u5219 TA \u8fd8\u4f1a\u96c7\u4eba\u518d\u6765\u4e00\u6b21\u3002<\/p>\n\n\n\n<p>5\uff09\u5c1d\u8bd5\u590d\u73b0\u95ee\u9898\uff1a\u5343\u8f9b\u4e07\u82e6\u63a8\u5bfc\u51fa\u4e86\u6839\u56e0\uff0c\u4e5f\u4e0d\u8981\u5c31\u6025\u7740\u5f00\u59cb\u4fee bug \u4e86\u3002\u5982\u679c\u53ef\u4ee5\uff0c\u6700\u597d\u80fd\u628a\u95ee\u9898\u7a33\u5b9a\u590d\u73b0\u51fa\u6765\uff0c\u8fd9\u6837\u624d\u66f4\u6709\u8bf4\u670d\u529b\u3002\u8fd9\u91cc\u63d0\u9192\u4e00\u70b9\uff1a\u53ef\u5343\u4e07\u522b\u5728\u751f\u4ea7\u73af\u5883\u5e72\u8fd9\u4e8b\uff08\u9664\u975e\u4f60\u771f\u7684 know what you&#8217;re doing\uff09\uff0c\u5426\u5219\u641e\u4e0d\u597d\u5c31\u662f\u4e8c\u6b21\u4f24\u5bb3\uff08\u4f60\uff1a\u54c8\u54c8\u54c8\uff0c\u4f60\u770b\uff0c\u8fd9\u628a\u5200\u5f53\u65f6\u5c31\u662f\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u6345\u8fdb\u53bb\u7684\uff0c\u8f68\u8ff9\u5b8c\u5168\u4e00\u6837\u3002\u7528\u6237\uff1a&#8230;\uff09\u3002<\/p>\n\n\n\n<p><strong>\u89e3\u51b3\u95ee\u9898<\/strong><\/p>\n\n\n\n<p>\u6700\u540e\uff0c\u95ee\u9898\u6839\u56e0\u5df2\u7ecf\u627e\u5230\uff0c\u5982\u4f55\u5b8c\u7f8e\u89e3\u51b3\u6536\u5c3e\uff1f\u51e0\u4e2a\u57fa\u672c\u539f\u5219\uff1a<\/p>\n\n\n\n<ul>\n<li>\u4fee\u590d\u4e5f\u662f\u4e00\u79cd\u53d8\u66f4\uff0c\u9700\u8981\u7ecf\u8fc7\u5b8c\u6574\u7684\u56de\u5f52\u6d4b\u8bd5\u3001\u7070\u5ea6\u53d1\u5e03\uff1b\u5207\u5fcc\u706b\u6025\u706b\u71ce\u4e0a\u7ebf\u4e86 bugfix\uff0c\u7ed3\u679c\u5f15\u53d1\u66f4\u591a\u7684 bugs to fix\u3002<\/li>\n\n\n\n<li>\u4fee\u590d\u53d1\u5e03\u540e\uff0c\u4e00\u5b9a\u8981\u505a\u7ebf\u4e0a\u9a8c\u8bc1\uff0c\u5e76\u4e14\u4fdd\u6301\u89c2\u5bdf\u4e00\u6bb5\u65f6\u95f4\uff0c\u786e\u4fdd\u662f\u771f\u7684\u771f\u7684\u4fee\u590d\u4e86\u3002<\/li>\n\n\n\n<li>\u6700\u540e\uff0c\u5982\u679c\u95ee\u9898\u5df2\u7ecf\u4e0a\u5347\u5230\u4e86\u6545\u969c\u8fd9\u4e2a\u7a0b\u5ea6\uff0c\u90a3\u5c31\u62c9\u4e0a\u5927\u4f19\u597d\u597d\u505a\u4e2a\u6545\u969c\u590d\u76d8\u5427\u3002\u6574\u4e2a\u5904\u7406\u8fc7\u7a0b\u4e00\u5b9a\u8fd8\u6709\u63d0\u5347\u7a7a\u95f4\uff0c\u4f60\u7684\u7ecf\u9a8c\u6559\u8bad\u5bf9\u5176\u4ed6\u540c\u5b66\u6765\u8bf4\u4e5f\u662f\u4e00\u6b21\u5f88\u597d\u7684\u8f93\u5165\u548c\u81ea\u67e5\u673a\u4f1a\uff1a\u5e78\u798f\u603b\u662f\u76f8\u4f3c\u7684\uff0c\u6545\u969c\u4e5f\u662f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>3\u3001\u6392\u67e5\u5de5\u5177<\/strong><\/p>\n\n\n\n<p>\u624b\u91cc\u53ea\u6709\u9524\u5b50\uff0c\u90a3\u770b\u4ec0\u4e48\u90fd\u50cf\u9489\u5b50\u3002\u4f5c\u4e3a\u5de5\u7a0b\u5e08\uff0c\u4f60\u9700\u8981\u7684\u662f\u4e00\u6574\u5957\u5de5\u5177\u7bb1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p9.itc.cn\/images01\/20200824\/4c58126819e64ae9856f62861be51dbf.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p3.itc.cn\/images01\/20200824\/90fdbe3f2cac4d06b751f0547e082ad0.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u95ee\u9898\u6392\u67e5\u5176\u5b9e\u5c31\u662f\u4e00\u6b21\u6301\u7eed\u89c2\u6d4b\u5e94\u7528\u884c\u4e3a\u7684\u8fc7\u7a0b\u3002\u4e3a\u4e86\u786e\u4fdd\u4e0d\u9057\u6f0f\u5173\u952e\u7ec6\u8282\uff0c\u4f60\u9700\u8981\u8ba9\u81ea\u5df1\u7684\u5e94\u7528\u53d8\u5f97\u66f4\u201c\u53ef\u89c2\u6d4b\uff08Observable\uff09\u3002<\/p>\n\n\n\n<p>\u63d0\u5347\u5e94\u7528\u53ef\u89c2\u6d4b\u6027\u6709\u4e09\u5927\u5229\u5668\uff1a\u65e5\u5fd7\uff08Logging\uff09\u3001\u76d1\u63a7\uff08Metrics\uff09\u3001\u8ffd\u8e2a\uff08Tracing\uff09\u3002\u5728\u6211\u4e4b\u524d\u6240\u505a\u7684\u9879\u76ee\u4e2d\uff0c\u8fd9\u4e09\u5757\u80fd\u529b\u5206\u522b\u662f\u7531 SLS\u3001Alimonitor \/ AliMetrics \/ Tsar\u3001EagleEye \u63d0\u4f9b\u7684\uff0c\u8fd9\u91cc\u5c31\u4e0d\u518d\u5c55\u5f00\u63cf\u8ff0\u4e86\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\u4e5f\u5f88\u63a8\u8350 Arthas \u8fd9\u4e2a\u5de5\u5177\uff0c\u975e\u5e38\u5b9e\u7528\u548c\u987a\u624b\uff0c\u76f8\u4fe1\u5f88\u591a\u540c\u5b66\u90fd\u5df2\u7ecf\u7528\u8fc7\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BA%8C%E3%80%81%E7%B3%BB%E7%BB%9F%E4%BC%98%E5%8C%96\"><\/span><strong>\u4e8c\u3001\u7cfb\u7edf\u4f18\u5316<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>\u53ea\u5b66\u4f1a\u4e86\u95ee\u9898\u6392\u67e5\u8fd8\u8fdc\u8fdc\u4e0d\u591f\uff08\u5f53\u7136\u6280\u80fd\u5fc5\u987b\u70b9\u6ee1\uff0cshit always happen\uff09\uff0c\u518d\u719f\u7ec3\u4e5f\u53ea\u662f\u6cbb\u6807\u4e0d\u6cbb\u672c\u3002\u5982\u679c\u60f3\u4ece\u6839\u6e90\u4e0a\u89c4\u907f\u95ee\u9898\uff0c\u5fc5\u987b\u4ece\u7cfb\u7edf\u672c\u8eab\u51fa\u53d1\uff1a\u6309\u7167\u6027\u80fd\u3001\u7a33\u5b9a\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u4e09\u4e2a\u65b9\u5411\uff0c\u6301\u7eed\u4f18\u5316\u4f60\u7684\u7cfb\u7edf\u5b9e\u73b0\uff0c\u627c\u6740\u95ee\u9898\u4e8e\u6447\u7bee\u4e4b\u4e2d\uff0c\u8ba9\u81ea\u5df1\u6bcf\u5929\u90fd\u80fd\u7761\u4e2a\u5b89\u7a33\u89c9\u3002<\/p>\n\n\n\n<p>\u8001\u677f\uff1a\u65e2\u8981\u5feb\uff0c\u53c8\u8981\u7a33\uff0c\u8fd8\u8981\u597d\u3002\u54e6\uff0c\u5de5\u8d44\u7684\u4e8b\u4f60\u522b\u62c5\u5fc3\uff0c\u4e0b\u4e2a\u6708\u4e00\u5b9a\u80fd\u53d1\u51fa\u6765\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p1.itc.cn\/images01\/20200824\/f414552d6b0a416d8c8d030d526b7c05.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7cfb\u7edf\u4f18\u5316\u7684\u4e09\u4e2a\u57fa\u672c\u65b9\u5411\uff1a\u6027\u80fd\uff08Performance\uff09\u3001\u7a33\u5b9a\u6027\uff08Stability\uff09\u3001\u53ef\u7ef4\u62a4\u6027\uff08Maintainability\uff09\u3002\u4e09\u8005\u4e4b\u95f4\u5e76\u4e0d\u662f\u5b8c\u5168\u72ec\u7acb\u7684\uff0c\u800c\u662f\u5b58\u5728\u7740\u590d\u6742\u7684\u76f8\u4e92\u4f5c\u7528\u5173\u7cfb\uff0c\u6709\u65f6\u751a\u81f3\u4f1a\u6b64\u6d88\u5f7c\u957f\u3002<\/p>\n\n\n\n<p>\u6700\u4f18\u79c0\u7684\u8f6f\u4ef6\u7cfb\u7edf\uff0c\u5e76\u975e\u8981\u628a\u8fd9\u4e09\u4e2a\u65b9\u5411\u90fd\u505a\u5230\u6781\u81f4\uff0c\u800c\u662f\u4f1a\u6839\u636e\u81ea\u5df1\u5b9e\u9645\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u573a\u666f\u5408\u7406\u53d6\u820d\uff0c\u5728\u8fd9\u4e09\u8005\u4e4b\u95f4\u8fbe\u5230\u4e00\u4e2a\u7efc\u5408\u6700\u4f18\u7684\u52a8\u6001\u5e73\u8861\u72b6\u6001\uff0c\u8ba9\u5404\u65b9\u9762\u90fd\u80fd\u505a\u5230\u8db3\u591f\u597d\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u4f18\u5316\u4e0d\u53ea\u662f\u4e00\u95e8\u79d1\u5b66\uff0c\u4e5f\u662f\u4e00\u95e8\u827a\u672f\u3002<\/p>\n\n\n\n<p><strong>1\u3001\u6027\u80fd\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u95ee\uff1a\u8981\u8dd1\u51fa\u6700\u5feb\u7684\u5708\u901f\uff0c\u662f\u8f66\u624b\u91cd\u8981\uff0c\u8fd8\u662f\u8d5b\u8f66\u91cd\u8981\uff1f<\/p>\n\n\n\n<p>\u7b54\uff1a\u5168\u90fd\u91cd\u8981\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p6.itc.cn\/images01\/20200824\/7de5820842be4a868a5dcc4bb2768ee6.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6ca1\u6709\u54ea\u4e2a\u7537\u4eba\u4f1a\u4e0d\u559c\u6b22\u9ad8\u6027\u80fd\u8dd1\u8f66\uff0c\u4e5f\u6ca1\u6709\u54ea\u4e2a\u5973\u4eba\u4f1a\u5e0c\u671b\u5728\u770b\u674e\u4f73\u7426\u76f4\u64ad\u65f6\u7a81\u7136\u5361\u987f\u3002\u6027\u80fd\uff0c\u662f\u5404\u884c\u5404\u4e1a\u5de5\u7a0b\u5e08\u4eec\u5171\u540c\u8ffd\u6c42\u7684\u7ec8\u6781\u6d6a\u6f2b\u3002<\/p>\n\n\n\n<p><strong>\u6027\u80fd\u6307\u6807<\/strong><\/p>\n\n\n\n<p>\u6307\u6807\uff08Indicators\uff09\u662f\u8861\u91cf\u4e00\u4ef6\u4e8b\u7269\u597d\u574f\u7684\u79d1\u5b66\u91cf\u5316\u624b\u6bb5\u3002\u5bf9\u4e8e\u6027\u80fd\u800c\u8a00\uff0c\u4e00\u822c\u4f1a\u4f7f\u7528\u5982\u4e0b\u6307\u6807\u8bc4\u4f30\uff1a<\/p>\n\n\n\n<ul>\n<li>\u541e\u5410\u7387\uff08Throughput\uff09\uff1a\u7cfb\u7edf\u5355\u4f4d\u65f6\u95f4\u5185\u80fd\u5904\u7406\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u4f8b\u5982\uff1a\u5728\u7ebf Web \u7cfb\u7edf &#8211; QPS\/TPS\uff0c\u79bb\u7ebf\u6570\u636e\u5206\u6790\u7cfb\u7edf &#8211; \u6bcf\u79d2\u5904\u7406\u7684\u6570\u636e\u91cf\u3002<\/li>\n\n\n\n<li>\u54cd\u5e94\u65f6\u95f4\uff08Response Time\uff09\uff1a\u4ee5 Web \u8bf7\u6c42\u5904\u7406\u4e3a\u4f8b\uff0c\u54cd\u5e94\u65f6\u95f4\uff08RT\uff09\u5373\u8bf7\u6c42\u4ece\u53d1\u51fa\u5230\u6536\u5230\u7684\u5f80\u8fd4\u65f6\u95f4\uff0c\u4e00\u822c\u4f1a\u7531\u7f51\u7edc\u4f20\u8f93\u5ef6\u8fdf\u3001\u6392\u961f\u5ef6\u8fdf\u548c\u5b9e\u9645\u5904\u7406\u8017\u65f6\u51e0\u4e2a\u90e8\u5206\u5171\u540c\u7ec4\u6210\u3002<\/li>\n\n\n\n<li>\u53ef\u4f38\u7f29\u6027\uff08Scalability\uff09\uff1a\u7cfb\u7edf\u901a\u8fc7\u589e\u52a0\u673a\u5668\u8d44\u6e90\uff08\u5782\u76f4\/\u6c34\u5e73\uff09\u6765\u627f\u8f7d\u66f4\u591a\u5de5\u4f5c\u8d1f\u8f7d\u7684\u80fd\u529b\uff1b\u6295\u5165\u4ea7\u51fa\u6bd4\u8d8a\u9ad8\uff08\u7406\u60f3\u60c5\u51b5\u662f\u7ebf\u6027\u4f38\u7f29\uff09\uff0c\u5219\u8bf4\u660e\u7cfb\u7edf\u7684\u53ef\u4f38\u7f29\u6027\u8d8a\u597d\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u5916\uff0c\u540c\u4e00\u4e2a\u7cfb\u7edf\u7684\u541e\u5410\u7387\u4e0e\u54cd\u5e94\u65f6\u95f4\uff0c\u4e00\u822c\u8fd8\u4f1a\u5b58\u5728\u5982\u4e0b\u5173\u8054\u5173\u7cfb\uff1a\u541e\u5410\u7387\u5c0f\u4e8e\u67d0\u4e2a\u4e34\u754c\u503c\u65f6\uff0c\u54cd\u5e94\u65f6\u95f4\u51e0\u4e4e\u4e0d\u53d8\uff1b\u4e00\u65e6\u8d85\u51fa\u8fd9\u4e2a\u4e34\u754c\u503c\uff0c\u7cfb\u7edf\u5c06\u8fdb\u5165\u8d85\u8f7d\u72b6\u6001\uff08overloaded\uff09\uff0c\u54cd\u5e94\u65f6\u95f4\u5f00\u59cb\u7ebf\u6027\u589e\u957f\u3002\u5bf9\u4e8e\u4e00\u4e2a\u6709\u7a33\u5b9a\u6027\u8981\u6c42\u7684\u7cfb\u7edf\uff0c\u9700\u8981\u5728\u505a\u6027\u80fd\u538b\u6d4b\u548c\u5bb9\u91cf\u89c4\u5212\u65f6\u5145\u5206\u8003\u8651\u8fd9\u4e2a\u4e34\u754c\u503c\u7684\u5927\u5c0f\u3002<\/p>\n\n\n\n<p>\u6ce8\uff1a\u5176\u5b9e\u6309\u66f4\u4e25\u8c28\u7684\u8bf4\u6cd5\uff0c\u6027\u80fd\u5c31\u662f\u5355\u6307\u4e00\u4e2a\u7cfb\u7edf\u6709\u591a\u201c\u5feb\u201d\uff1b\u4e0a\u8ff0\u90e8\u5206\u6307\u6807\u5e76\u4e0d\u7eaf\u7cb9\u53ea\u4ee3\u8868\u7cfb\u7edf\u5feb\u6162\uff0c\u4f46\u4e5f\u90fd\u4e0e\u5feb\u6162\u606f\u606f\u76f8\u5173\u3002<\/p>\n\n\n\n<p><strong>\u6027\u80fd\u5206\u6790<\/strong><\/p>\n\n\n\n<p>\u53e4\u4eba\u6709\u53e5\u8001\u8bdd\uff0cIf you can&#8217;t measure it, you can&#8217;t improve It.<\/p>\n\n\n\n<p>\u8981\u4f18\u5316\u4e00\u4e2a\u7cfb\u7edf\u7684\u6027\u80fd\uff08\u4f8b\u5982Web\u8bf7\u6c42\u54cd\u5e94\u65f6\u95f4\uff09\uff0c\u4f60\u5fc5\u987b\u9996\u5148\u51c6\u786e\u5730\u6d4b\u91cf\u548c\u5206\u6790\u51fa\uff0c\u5f53\u524d\u7cfb\u7edf\u7684\u6027\u80fd\u7a76\u7adf\u5dee\u5728\u54ea\uff1a\u662f\u8bf7\u6c42\u89e3\u6790\u4e0d\u591f\u5feb\uff0c\u8fd8\u662f\u67e5\u8be2 DB \u592a\u6162\uff1f\u5982\u679c\u662f\u540e\u8005\uff0c\u90a3\u53c8\u662f\u626b\u63cf\u6570\u636e\u6761\u76ee\u9636\u6bb5\u592a\u6162\uff0c\u8fd8\u662f\u8fd4\u56de\u7ed3\u679c\u96c6\u592a\u6162\uff1f\u6216\u8005\u4f1a\u4e0d\u4f1a\u53ea\u662f\u5e94\u7528\u4e0e DB \u4e4b\u95f4\u7684\u7f51\u7edc\u5ef6\u8fdf\u592a\u5927\uff1f<\/p>\n\n\n\n<p>\u4efb\u4f55\u590d\u6742\u8bf7\u6c42\u7684\u5904\u7406\u8fc7\u7a0b\uff0c\u6700\u7ec8\u90fd\u53ef\u4ee5\u62c6\u89e3\u51fa\u4e00\u7cfb\u5217\u5e76\u884c\/\u4e32\u884c\u7684\u539f\u5b50\u64cd\u4f5c\u3002\u5982\u679c\u53ea\u662f\u902e\u4f4f\u54ea\u4e2a\u5c31\u53bb\u4f18\u5316\u54ea\u4e2a\uff0c\u663e\u7136\u6548\u7387\u4e0d\u4f1a\u592a\u9ad8\uff08\u9664\u975e\u4f60\u8fd0\u6c14\u7206\u68da\uff09\u3002\u66f4\u5408\u7406\u7684\u505a\u6cd5\uff0c\u5e94\u8be5\u662f\u575a\u6301 2\/8 \u539f\u5219\uff1a\u4f18\u5148\u5206\u6790\u548c\u4f18\u5316\u7cfb\u7edf\u74f6\u9888\uff0c\u5373\u5f53\u524d\u5bf9\u7cfb\u7edf\u6027\u80fd\u5f71\u54cd\u6700\u5927\u7684\u539f\u5b50\u64cd\u4f5c\uff1b\u4ed6\u4eec\u5f88\u53ef\u80fd\u5c31\u662f ROI \u6700\u9ad8\u7684\u4f18\u5316\u70b9\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u8be5\u5982\u4f55\u53bb\u91cf\u5316\u5206\u6790\u6027\u80fd\uff1f\u8fd9\u91cc\u5217\u51fa\u4e86\u4e00\u4e9b\u5de5\u5177\u53c2\u8003\uff1a<\/p>\n\n\n\n<ul>\n<li>\u7cfb\u7edf\u5c42\u9762\uff1atsar\u3001top\u3001iostat\u3001vmstat\u3002<\/li>\n\n\n\n<li>\u7f51\u7edc\u5c42\u9762\uff1aiftop\u3001tcpdump\u3001wireshark\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u5c42\u9762\uff1aSQL explain\u3001CloudDBA\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\u4ee3\u7801\u5c42\u9762\uff1aJProfiler\u3001Arthas\u3001jstack\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u4e2d\u5f88\u591a\u5de5\u5177\u4e5f\u662f\u95ee\u9898\u6392\u67e5\u65f6\u5e38\u7528\u7684\u8bca\u65ad\u5de5\u5177\uff1b\u6bd5\u7adf\uff0c\u65e0\u8bba\u662f\u6027\u80fd\u5206\u6790\u8fd8\u662f\u8bca\u65ad\u5206\u6790\uff0c\u76ee\u7684\u90fd\u662f\u53bb\u7406\u89e3\u4e00\u4e2a\u7cfb\u7edf\u548c\u4ed6\u6240\u5904\u7684\u73af\u5883\uff0c\u6240\u9700\u8981\u505a\u7684\u4e8b\u60c5\u90fd\u662f\u76f8\u4f3c\u7684\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u539f\u5219<\/strong><\/p>\n\n\n\n<p>\u4f60\u5e94\u8be5\u505a\u7684\uff1a\u4e0a\u9762\u5df2\u7ecf\u63d0\u4e86\u5f88\u591a\uff0c\u8fd9\u91cc\u518d\u8865\u5145\u4e00\u70b9\uff1a\u6027\u80fd\u4f18\u5316\u4e0e\u505a\u529f\u80fd\u9700\u6c42\u4e00\u6837\uff0c\u90fd\u662f\u4e3a\u4e1a\u52a1\u670d\u52a1\u7684\uff0c\u56e0\u6b64\u4f18\u5316\u65f6\u5343\u4e07\u4e0d\u8981\u5fd9\u7740\u81ea\u55e8\uff0c\u4e00\u5b9a\u8981\u7ed3\u5408\u76ee\u6807\u9700\u6c42\u548c\u5e94\u7528\u573a\u666f \u2014\u2014 \u4e5f\u8bb8\u8fd9\u5757\u4f60\u60f3\u505a\u7684\u4f18\u5316\uff0c\u538b\u6839\u7ebf\u4e0a\u5c31\u78b0\u4e0d\u5230\uff1b\u4e5f\u8bb8\u90a3\u5757\u5f88\u96be\u505a\u7684\u4f18\u5316\uff0c\u53ef\u4ee5\u6839\u636e\u6d41\u91cf\u7279\u5f81\u505a\u975e\u901a\u7528\u7684\u5b9a\u5236\u4f18\u5316\u3002<\/p>\n\n\n\n<p>\u4f60\u4e0d\u5e94\u8be5\u505a\u7684\uff1a\u5373\u8001\u751f\u5e38\u8c08\u7684\u63d0\u524d\u4f18\u5316\uff08Premature-optimization\uff09\u4e0e\u8fc7\u5ea6\u4f18\u5316\uff08Over-optimization\uff09 \u2014\u2014 \u901a\u5e38\u800c\u8a00\uff08\u5e76\u4e0d\u7edd\u5bf9\uff09\uff0c\u6027\u80fd\u4f18\u5316\u90fd\u4e0d\u662f\u514d\u8d39\u7684\u5348\u9910\uff0c\u4f18\u5316\u505a\u7684\u8d8a\u591a\uff0c\u5f80\u5f80\u53ef\u7ef4\u62a4\u6027\u4e5f\u4f1a\u8d8a\u5dee\u3002<\/p>\n\n\n\n<p><strong>1\uff09\u4f18\u5316\u624b\u6bb5<\/strong><\/p>\n\n\n\n<p>\u5e38\u7528\u7684\u6027\u80fd\u4f18\u5316\u624b\u6bb5\u6709\u54ea\u4e9b\uff1f\u6211\u8fd9\u91cc\u603b\u7ed3\u4e86 8 \u4e2a\u5957\u8def\uff08\u6700\u540e 1 \u4e2a\u662f\u5c0f\u9738\u738b\u591a\u5408\u4e00\u6c47\u603b\u5957\u8def\uff09\u3002<\/p>\n\n\n\n<p><strong>\u2460 \u7b80\u5316<\/strong><\/p>\n\n\n\n<p>\u6709\u4e9b\u4e8b\uff0c\u4f60\u53ef\u4ee5\u9009\u62e9\u4e0d\u505a\u3002<\/p>\n\n\n\n<ul>\n<li>\u4e1a\u52a1\u5c42\u9762\uff1ae.g. \u6d41\u7a0b\u7cbe\u7b80\u3001\u9700\u6c42\u7b80\u5316\u3002<\/li>\n\n\n\n<li>\u7f16\u7801\u5c42\u9762\uff1ae.g. \u5faa\u73af\u5185\u51cf\u5c11\u9ad8\u5f00\u9500\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u67b6\u6784\u5c42\u9762\uff1ae.g. \u51cf\u5c11\u6ca1\u5fc5\u8981\u7684\u62bd\u8c61\/\u5206\u5c42\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5c42\u9762\uff1ae.g. \u6570\u636e\u6e05\u6d17\u3001\u63d0\u53d6\u3001\u805a\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2461 \u5e76\u884c<\/strong><\/p>\n\n\n\n<p>\u6709\u4e9b\u4e8b\uff0c\u4f60\u53ef\u4ee5\u627e\u4eba\u4e00\u8d77\u505a\u3002<\/p>\n\n\n\n<p>\u65b9\u5f0f\uff1a\u5355\u673a\u5e76\u884c\uff08\u591a\u7ebf\u7a0b\uff09\u3001\u591a\u673a\u5e76\u884c\uff08\u5206\u5e03\u5f0f\uff09\u3002<\/p>\n\n\n\n<p>\u4f18\u70b9\uff1a\u5145\u5206\u5229\u7528\u673a\u5668\u8d44\u6e90\uff08\u591a\u6838\u3001\u96c6\u7fa4\uff09\u3002<\/p>\n\n\n\n<p>\u7f3a\u70b9\uff1a\u540c\u6b65\u5f00\u9500\u3001\u7ebf\u7a0b\u5f00\u9500\u3001\u6570\u636e\u503e\u659c\u3002<\/p>\n\n\n\n<ul>\n<li>\u540c\u6b65\u4f18\u5316\uff1a\u4e50\u89c2\u9501\u3001\u7ec6\u7c92\u5ea6\u9501\u3001\u65e0\u9501\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u66ff\u4ee3\uff08\u5982\u534f\u7a0b\uff1aJava WISP\u3001Go routines\u3001Kotlin coroutines\uff09\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u503e\u659c\uff1a\u8d1f\u8f7d\u5747\u8861\uff08Hash \/ RR \/ \u52a8\u6001\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2462 \u5f02\u6b65<\/strong><\/p>\n\n\n\n<p>\u6709\u4e9b\u4e8b\uff0c\u4f60\u53ef\u4ee5\u653e\u624b\uff0c\u4e0d\u7528\u6b7b\u7b49\u3002<\/p>\n\n\n\n<p>\u65b9\u5f0f\uff1a\u6d88\u606f\u961f\u5217 + \u4efb\u52a1\u7ebf\u7a0b + \u901a\u77e5\u673a\u5236\u3002<\/p>\n\n\n\n<p>\u4f18\u70b9\uff1a\u63d0\u5347\u541e\u5410\u7387\u3001\u7ec4\u4ef6\u89e3\u8026\u3001\u524a\u5cf0\u586b\u8c37\u3002<\/p>\n\n\n\n<p>\u7f3a\u70b9\uff1a\u6392\u961f\u5ef6\u8fdf\uff08\u961f\u5217\u79ef\u538b\uff09\u3002<\/p>\n\n\n\n<ul>\n<li>\u907f\u514d\u8fc7\u5ea6\u79ef\u538b\uff1aBack-pressure\uff08Reactive\u601d\u60f3\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2463 \u6279\u91cf<\/strong><\/p>\n\n\n\n<p>\u6709\u4e9b\u4e8b\uff0c\u4f60\u53ef\u4ee5\u5408\u8d77\u6765\u4e00\u8d77\u505a\u3002<\/p>\n\n\n\n<p>\u65b9\u5f0f\uff1a\u591a\u6b21\u5355\u4e00\u64cd\u4f5c \u2192 \u5408\u5e76\u4e3a\u5355\u6b21\u6279\u91cf\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u6848\u4f8b\uff1aTCP Nagel \u7b97\u6cd5\uff1bDB \u7684\u6279\u91cf\u8bfb\u5199\u63a5\u53e3\u3002<\/p>\n\n\n\n<p>\u4f18\u70b9\uff1a\u907f\u514d\u5355\u6b21\u64cd\u4f5c\u7684\u56fa\u6709\u5f00\u9500\uff0c\u5747\u644a\u540e\u603b\u5f00\u9500\u66f4\u4f4e\u3002<\/p>\n\n\n\n<p>\u7f3a\u70b9\uff1a\u7b49\u5f85\u5ef6\u8fdf + \u805a\u5408\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<ul>\n<li>\u51cf\u5c11\u7b49\u5f85\u5ef6\u8fdf\uff1aTimeout \u89e6\u53d1\u63d0\u4ea4\uff0c\u63a7\u5236\u5ef6\u8fdf\u4e0a\u9650\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2464 \u65f6\u95f4\u7a7a\u95f4\u4e92\u6362<\/strong><\/p>\n\n\n\n<p>\u6e38\u620f\u7684\u672c\u8d28\uff1a\u8981\u4e48\u6709\u95f2\uff0c\u8981\u4e48\u6709\u94b1\u3002<\/p>\n\n\n\n<p>\u7a7a\u95f4\u6362\u65f6\u95f4\uff1a\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u3001\u62c9\u8fd1\u4f20\u8f93\u8ddd\u79bb\u3001\u5206\u6d41\u51cf\u5c11\u538b\u529b\u3002<\/p>\n\n\n\n<ul>\n<li>\u6848\u4f8b\uff1a\u7f13\u5b58\u3001CDN\u3001\u7d22\u5f15\u3001\u53ea\u8bfb\u526f\u672c\uff08replication\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u65f6\u95f4\u6362\u7a7a\u95f4\uff1a\u6709\u65f6\u5019\u4e5f\u80fd\u8fbe\u5230\u201c\u66f4\u5feb\u201d\u7684\u6548\u679c\uff08\u6570\u636e\u91cf\u51cf\u5c11 \u2192 \u4f20\u8f93\u65f6\u95f4\u51cf\u5c11\uff09\u3002<\/p>\n\n\n\n<ul>\n<li>\u6848\u4f8b\uff1a\u6570\u636e\u538b\u7f29\uff08HTTP\/2 \u5934\u90e8\u538b\u7f29\u3001Bitmap\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2465 \u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u7a0b\u5e8f = \u6570\u636e\u7ed3\u6784 + \u7b97\u6cd5<\/p>\n\n\n\n<ul>\n<li>\u591a\u4e86\u89e3\u4e00\u4e9b\u201c\u51b7\u95e8\u201d\u7684\u6570\u636e\u7ed3\u6784 \uff1aSkip list\u3001Bloom filter\u3001Time Wheel \u7b49\u3002<\/li>\n\n\n\n<li>\u4e00\u4e9b\u201c\u7b80\u5355\u201d\u7684\u7b97\u6cd5\u601d\u60f3\uff1a\u9012\u5f52\u3001\u5206\u6cbb\u3001\u8d2a\u5fc3\u3001\u52a8\u6001\u89c4\u5212\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2466 \u6c60\u5316 &amp; \u5c40\u90e8\u5316<\/strong><\/p>\n\n\n\n<p>\u5171\u4eab\u7ecf\u6d4e &amp; \u5c0f\u533a\u8d85\u5e02<\/p>\n\n\n\n<p>\u6c60\u5316\uff08Pooling\uff09\uff1a\u51cf\u5c11\u8d44\u6e90\u521b\u5efa\u548c\u9500\u6bc1\u5f00\u9500\u3002<\/p>\n\n\n\n<ul>\n<li>\u6848\u4f8b\uff1a\u7ebf\u7a0b\u6c60\u3001\u5185\u5b58\u6c60\u3001DB \u8fde\u63a5\u6c60\u3001Socket \u8fde\u63a5\u6c60\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5c40\u90e8\u5316\uff08Localization\uff09\uff1a\u907f\u514d\u5171\u4eab\u8d44\u6e90\u7ade\u4e89\u5f00\u9500\u3002<\/p>\n\n\n\n<ul>\n<li>\u6848\u4f8b\uff1aTLB\uff08ThreadLocalBuffer\uff09\u3001\u591a\u7ea7\u7f13\u5b58\uff08\u672c\u5730\u5c40\u90e8\u7f13\u5b58 -&gt; \u5171\u4eab\u5168\u5c40\u7f13\u5b58\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2467 \u66f4\u591a\u4f18\u5316\u624b\u6bb5<\/strong><\/p>\n\n\n\n<ul>\n<li>\u5347\u7ea7\u7ea2\u5229\uff1a\u5185\u6838\u3001JRE\u3001\u4f9d\u8d56\u5e93\u3001\u534f\u8bae\u3002<\/li>\n\n\n\n<li>\u8c03\u53c2\u5927\u5e08\uff1a\u914d\u7f6e\u3001JVM\u3001\u5185\u6838\u3001\u7f51\u5361\u3002<\/li>\n\n\n\n<li>SQL \u4f18\u5316\uff1a\u7d22\u5f15\u3001SELECT *\u3001LIMIT 1\u3002<\/li>\n\n\n\n<li>\u4e1a\u52a1\u7279\u5f81\u5b9a\u5236\u4f18\u5316\uff1ae.g. \u51cc\u6668\u4e1a\u52a1\u4f4e\u5cf0\u671f\u505a\u65e5\u5fd7\u8f6e\u8f6c\u3002<\/li>\n\n\n\n<li>Hybrid \u601d\u60f3\uff08\u4f18\u70b9\u7ed3\u5408\uff09\uff1aJDK sort() \u5b9e\u73b0\u3001Weex\/RN\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2\u3001\u7a33\u5b9a\u6027\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u7a33\u4f4f\uff0c\u6211\u4eec\u80fd\u8d62\u3002\u2014\u2014 by [0 \u6740 10 \u6b7b] \u6b63\u5728\u7b49\u5f85\u590d\u6d3b\u7684\u9c81\u73ed\u4e03\u53f7<\/p>\n\n\n\n<p>\u7ef4\u6301\u7a33\u5b9a\u6027\u662f\u6211\u4eec\u7a0b\u5e8f\u5458\u6bcf\u5929\u90fd\u8981\u601d\u8003\u548c\u8ba8\u8bba\u7684\u5927\u4e8b\u3002<\/p>\n\n\n\n<p>\u4ec0\u4e48\u6837\u7684\u7cfb\u7edf\u624d\u7b97\u7a33\u5b9a\uff1f\u6211\u81ea\u5df1\u5199\u4e86\u4e2a\u5c0f\u5de5\u5177\uff0c\u672c\u5730\u8dd1\u8dd1\u4ece\u6765\u6ca1\u51fa\u8fc7\u95ee\u9898\uff0c\u7b97\u7a33\u5b9a\u5417\uff1f\u6dd8\u5b9d\u7f51\u7ad9\u51e0\u5343\u4eba\u7ef4\u62a4\uff0c\u4f46\u53cc\u5341\u4e00\u96f6\u70b9\u8fd8\u662f\u7ecf\u5e38\u4e0b\u5355\u5931\u8d25\uff0c\u6240\u4ee5\u5b83\u4e0d\u7a33\u5b9a\u55bd\uff1f<\/p>\n\n\n\n<p>\u7a33\u5b9a\u662f\u76f8\u5bf9\u7684\uff0c\u4e1a\u52a1\u89c4\u6a21\u8d8a\u5927\u3001\u573a\u666f\u8d8a\u590d\u6742\uff0c\u7cfb\u7edf\u8d8a\u5bb9\u6613\u51fa\u73b0\u4e0d\u7a33\u5b9a\uff0c\u4e14\u5e26\u6765\u7684\u5f71\u54cd\u4e5f\u8d8a\u4e25\u91cd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/p7.itc.cn\/images01\/20200824\/c34167a050db487fa56e118a3251c8e5.jpeg\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u8861\u91cf\u6307\u6807<\/strong><\/p>\n\n\n\n<p>\u4e0d\u540c\u4e1a\u52a1\u6240\u63d0\u4f9b\u7684\u670d\u52a1\u7c7b\u578b\u5343\u5dee\u4e07\u522b\uff0c\u5982\u4f55\u7528\u4e00\u81f4\u7684\u6307\u6807\u53bb\u8861\u91cf\u7cfb\u7edf\u7a33\u5b9a\u6027\uff1f\u6807\u51c6\u505a\u6cd5\u662f\u5b9a\u4e49\u670d\u52a1\u7684\u53ef\u7528\u6027\uff08Availability\uff09\uff1a\u53ea\u8981\u5bf9\u7528\u6237\u800c\u8a00\u670d\u52a1\u201c\u53ef\u7528\u201d\uff0c\u90a3\u5c31\u8ba4\u4e3a\u7cfb\u7edf\u5f53\u524d\u662f\u7a33\u5b9a\u7684\uff1b\u5426\u5219\u5c31\u662f\u4e0d\u7a33\u5b9a\u3002\u7528\u8fd9\u6837\u7684\u65b9\u5f0f\uff0c\u91c7\u96c6\u548c\u6c47\u603b\u540e\u5c31\u80fd\u5f97\u5230\u670d\u52a1\u603b\u7684\u53ef\u7528\/\u4e0d\u53ef\u7528\u6bd4\u4f8b\uff08\u670d\u52a1\u65f6\u957f or \u670d\u52a1\u6b21\u6570\uff09\uff0c\u4ee5\u6b64\u6765\u76d1\u6d4b\u548c\u91cf\u5316\u4e00\u4e2a\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n<p>\u53ef\u662f\uff0c\u901a\u8fc7\u4ec0\u4e48\u6765\u5b9a\u4e49\u67d0\u4e2a\u670d\u52a1\u5f53\u524d\u662f\u5426\u53ef\u7528\u5462\uff1f\u8fd9\u4e00\u70b9\u786e\u5b9e\u8ddf\u4e1a\u52a1\u76f8\u5173\uff0c\u4f46\u5927\u90e8\u5206\u540c\u7c7b\u4e1a\u52a1\u90fd\u53ef\u4ee5\u7528\u7c7b\u4f3c\u7684\u65b9\u5f0f\u53bb\u5b9a\u4e49\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u4e00\u822c\u7684 Web \u7f51\u7ad9\uff0c\u6211\u4eec\u53ef\u4ee5\u6309\u5982\u4e0b\u65b9\u5f0f\u53bb\u5b9a\u4e49\u670d\u52a1\u662f\u5426\u53ef\u7528\uff1aAPI \u8bf7\u6c42\u90fd\u8fd4\u56de\u6210\u529f\uff0c\u4e14\u9875\u9762\u603b\u52a0\u8f7d\u65f6\u95f4 &lt; 3 \u79d2\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u963f\u91cc\u4e91\u5bf9\u5916\u63d0\u4f9b\u7684\u4e91\u4ea7\u54c1\u800c\u8a00\uff0c\u670d\u52a1\u53ef\u7528\u6027\u662f\u4e00\u4e2a\u66f4\u52a0\u9700\u8981\u683c\u5916\u91cd\u89c6\u5e76\u6301\u7eed\u63d0\u5347\u7684\u6307\u6807\uff1a\u963f\u91cc\u4e91\u4e0a\u7684\u5f88\u591a\u7528\u6237\u4f1a\u540c\u65f6\u4f7f\u7528\u591a\u6b3e\u4e91\u4ea7\u54c1\uff0c\u5176\u4e2d\u4efb\u4f55\u4e00\u6b3e\u4ea7\u54c1\u51fa\u73b0\u53ef\u7528\u6027\u95ee\u9898\uff0c\u90fd\u4f1a\u76f4\u63a5\u88ab\u7528\u6237\u7684\u7528\u6237\u611f\u77e5\u548c\u653e\u5927\u3002\u6240\u4ee5\uff0c\u8d8a\u662f\u5e95\u5c42\u7684\u57fa\u7840\u8bbe\u65bd\uff0c\u53ef\u7528\u6027\u8981\u6c42\u5c31\u8d8a\u9ad8\u3002\u5173\u4e8e\u53ef\u7528\u6027\u7684\u66f4\u591a\u7ec6\u8282\u6307\u6807\u548c\u6982\u5ff5\uff08SLI \/ SLO \/ SLA\uff09\uff0c\u53ef\u8fdb\u4e00\u6b65\u53c2\u8003\u4e91\u667a\u80fd SLA \u4e86\u89e3\u3002<\/p>\n\n\n\n<p><strong>\u53ef\u7528\u6027\u6d4b\u91cf<\/strong><\/p>\n\n\n\n<p>\u6709\u4e86\u4e0a\u8ff0\u53ef\u7528\u6027\u6307\u6807\u5b9a\u4e49\u540e\uff0c\u63a5\u4e0b\u6765\u8be5\u5982\u4f55\u53bb\u51c6\u786e\u6d4b\u91cf\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u8868\u73b0\uff1f\u4e00\u822c\u6709\u5982\u4e0b\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p><strong>1\uff09\u63a2\u9488\u6a21\u62df<\/strong><\/p>\n\n\n\n<p>\u4ece\u5ba2\u6237\u7aef\u4fa7\uff0c\u6a21\u62df\u7528\u6237\u7684\u8c03\u7528\u884c\u4e3a\u3002<\/p>\n\n\n\n<ul>\n<li>\u4f18\u70b9\uff1a\u6570\u636e\u771f\u5b9e\uff08\u5ba2\u6237\u7aef\u89d2\u5ea6\uff09\u3002<\/li>\n\n\n\n<li>\u7f3a\u70b9\uff1a\u6570\u636e\u4e0d\u5168\u9762\uff08\u5355\u4e00\u5ba2\u6237\u6570\u636e\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2\uff09\u670d\u52a1\u7aef\u91c7\u96c6<\/strong><\/p>\n\n\n\n<p>\u4ece\u670d\u52a1\u7aef\u4fa7\uff0c\u76f4\u63a5\u5206\u6790\u65e5\u5fd7\u548c\u6570\u636e\u3002<\/p>\n\n\n\n<ul>\n<li>\u4f18\u70b9\uff1a\u8986\u76d6\u6240\u6709\u8c03\u7528\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u7f3a\u70b9\uff1a\u7f3a\u5931\u5ba2\u6237\u7aef\u94fe\u8def\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5bf9\u53ef\u7528\u6027\u6570\u636e\u8981\u6c42\u8f83\u9ad8\u7684\u7cfb\u7edf\uff0c\u4e5f\u53ef\u4ee5\u540c\u65f6\u8fd0\u7528\u4e0a\u8ff0\u4e24\u79cd\u65b9\u5f0f\uff0c\u5efa\u8bae\u7ed3\u5408\u4f60\u7684\u4e1a\u52a1\u573a\u666f\u7efc\u5408\u8bc4\u4f30\u9009\u62e9\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u539f\u5219<\/strong><\/p>\n\n\n\n<p>\u4f60\u5e94\u8be5\u505a\u7684\uff1a\u5173\u6ce8 RT \u7684\u6570\u636e\u5206\u5e03\uff08\u5982\uff1ap50\/p99\/p999 \u5206\u4f4d\u70b9\uff09\uff0c\u800c\u4e0d\u662f\u5e73\u5747\u503c\uff08mean\uff09 \u2014\u2014 \u5e73\u5747\u503c\u5e76\u6ca1\u6709\u592a\u5927\u610f\u4e49\uff0c\u66f4\u5e94\u8be5\u53bb\u5173\u6ce8\u4f60\u90a3 1%\u30010.1% \u7528\u6237\u7684\u51c6\u786e\u611f\u53d7\u3002<\/p>\n\n\n\n<p>\u4f60\u4e0d\u5e94\u8be5\u505a\u7684\uff1a\u4e0d\u8981\u5c1d\u8bd5\u627f\u8bfa\u548c\u4f18\u5316\u53ef\u7528\u6027\u5230 100% \u2014\u2014 \u4e00\u65b9\u9762\u662f\u65e0\u6cd5\u5b9e\u73b0\uff0c\u5b58\u5728\u592a\u591a\u5ba2\u89c2\u4e0d\u53ef\u63a7\u56e0\u7d20\uff1b\u53e6\u4e00\u65b9\u9762\u4e5f\u6ca1\u6709\u610f\u4e49\uff0c\u5ba2\u6237\u51e0\u4e4e\u5173\u6ce8\u4e0d\u5230 0.001% \u7684\u53ef\u7528\u6027\u5dee\u522b\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u624b\u6bb5<\/strong><\/p>\n\n\n\n<p>\u5e38\u7528\u7684\u7a33\u5b9a\u6027\u4f18\u5316\u624b\u6bb5\u6709\u54ea\u4e9b\uff1f\u8fd9\u91cc\u4e5f\u603b\u7ed3\u4e86 8 \u4e2a\u5957\u8def\uff1a<\/p>\n\n\n\n<p><strong>1\uff09\u907f\u514d\u5355\u70b9<\/strong><\/p>\n\n\n\n<p>\u7236\u6bcd\uff1a\u4e00\u4e2a\u4eba\u5728\u5916\u6f02\u4e86\u8fd9\u4e48\u591a\u5e74\uff0c\u4e5f\u8be5\u627e\u4e2a\u4eba\u7a33\u5b9a\u4e0b\u6765\u4e86\u3002<\/p>\n\n\n\n<p>\u5982\u4f55\u907f\u514d\uff1f<\/p>\n\n\n\n<ul>\n<li>\u96c6\u7fa4\u90e8\u7f72\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u526f\u672c\u3002<\/li>\n\n\n\n<li>\u591a\u673a\u623f\u5bb9\u707e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u53ea\u5806\u91cf\u4e0d\u591f\uff0c\u8fd8\u9700\u8981\u5177\u5907\u6545\u969c\u8f6c\u79fb\u80fd\u529b\uff08Failover\uff09\u3002<\/p>\n\n\n\n<ul>\n<li>\u63a5\u5165\u5c42\uff1aDNS\u3001VipServer\u3001SLB\u3002<\/li>\n\n\n\n<li>\u670d\u52a1\u5c42\uff1a\u670d\u52a1\u53d1\u73b0 + \u5065\u5eb7\u68c0\u67e5 + \u5254\u9664\u673a\u5236\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\u5c42\uff1a\u65e0\u72b6\u6001\u8bbe\u8ba1\uff08Stateless\uff09\uff0c\u4fbf\u4e8e\u968f\u65f6\u548c\u5feb\u901f\u5207\u6362\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2\uff09\u6d41\u63a7\/\u9650\u6d41<\/strong><\/p>\n\n\n\n<p>\u8ba1\u5212\u751f\u80b2\u3001\u4e0a\u5b66\u8c03\u5242\u3001\u8f66\u724c\u9650\u53f7\u3001\u666f\u533a\u9650\u884c&#8230; \u4eba\u751f\u5904\u5904\u88ab\u6d41\u63a7\u3002<\/p>\n\n\n\n<ul>\n<li>\u7c7b\u578b\uff1aQPS \u6d41\u63a7\u3001\u5e76\u53d1\u5ea6\u6d41\u63a7\u3002<\/li>\n\n\n\n<li>\u5de5\u5177\uff1aRateLimiter\u3001\u4fe1\u53f7\u91cf\u3001Sentinel\u3002<\/li>\n\n\n\n<li>\u7c92\u5ea6\uff1a\u5168\u5c40\u3001\u7528\u6237\u7ea7\u3001\u63a5\u53e3\u7ea7\u3002<\/li>\n\n\n\n<li>\u70ed\u70b9\u6d41\u63a7\uff1a\u907f\u514d\u610f\u6599\u4e4b\u5916\u7684\u7a81\u589e\u6d41\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>3\uff09\u7194\u65ad<\/strong><\/p>\n\n\n\n<p>\u4e0a\u5348\u4e70\u7684\u80a1\u7968\u7194\u65ad\uff0c\u665a\u4e0a\u5bb6\u91cc\u4fdd\u9669\u4e1d\u7194\u65ad&#8230; \u6de1\u5b9a\uff0c\u53ca\u65f6\u6b62\u635f\u800c\u5df2\u3002<\/p>\n\n\n\n<ul>\n<li>\u76ee\u7684\uff1a\u9632\u6b62\u8fde\u9501\u6545\u969c\uff08\u96ea\u5d29\u6548\u5e94\uff09\u3002<\/li>\n\n\n\n<li>\u5de5\u5177\uff1aHystrix\u3001Failsafe\u3001Resilience4j\u3002<\/li>\n\n\n\n<li>\u529f\u80fd\uff1a\u81ea\u52a8\u7ed5\u5f00\u5f02\u5e38\u670d\u52a1\u5e76\u68c0\u6d4b\u6062\u590d\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u6d41\u7a0b\uff1a\u5173\u95ed \u2192 \u6253\u5f00 \u2192 \u534a\u5f00\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>4\uff09\u964d\u7ea7<\/strong><\/p>\n\n\n\n<p>\u6ca1\u65f6\u95f4\u505a\u996d\u4e86\uff0c\u4eca\u5929\u5c31\u5403\u5916\u5356\u5427&#8230; \u5bf9\u4e8e\u5065\u5eb7\u95ee\u9898\uff0c\u8fd8\u662f\u5f97\u5c11\u4e00\u70b9\u964d\u7ea7\u3002<\/p>\n\n\n\n<p>\u89e6\u53d1\u539f\u56e0\uff1a\u6d41\u63a7\u3001\u7194\u65ad\u3001\u8d1f\u8f7d\u8fc7\u9ad8\u3002<\/p>\n\n\n\n<p>\u5e38\u89c1\u964d\u7ea7\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ul>\n<li>\u5173\u95ed\u975e\u6838\u5fc3\u529f\u80fd\uff1a\u505c\u6b62\u5e94\u7528\u65e5\u5fd7\u6253\u5370\u3002<\/li>\n\n\n\n<li>\u727a\u7272\u6570\u636e\u65f6\u6548\u6027\uff1a\u8fd4\u56de\u7f13\u5b58\u4e2d\u65e7\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u727a\u7272\u6570\u636e\u7cbe\u786e\u6027\uff1a\u964d\u4f4e\u6570\u636e\u91c7\u6837\u9891\u7387\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>5\uff09\u8d85\u65f6\/\u91cd\u8bd5<\/strong><\/p>\n\n\n\n<p>\u9489\u9489\u4e0d\u56de\u600e\u4e48\u529e\uff1f\u6bcf 10 \u5206\u949f ping \u4e00\u6b21\uff0c\u8d85\u8fc7 1 \u5c0f\u65f6\u6253\u7535\u8bdd\u3002<\/p>\n\n\n\n<p>\u8d85\u65f6\uff1a\u907f\u514d\u8c03\u7528\u7aef\u9677\u5165\u6c38\u4e45\u963b\u585e\u3002<\/p>\n\n\n\n<ul>\n<li>\u8d85\u65f6\u65f6\u95f4\u8bbe\u7f6e\uff1a\u5168\u94fe\u8def\u81ea\u4e0a\u800c\u4e0b\u89c4\u5212\u3002<\/li>\n\n\n\n<li>Timeout vs. Deadline\uff1a\u4f7f\u7528\u7edd\u5bf9\u65f6\u95f4\u4f1a\u66f4\u597d\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u91cd\u8bd5\uff1a\u786e\u4fdd\u53ef\u91cd\u8bd5\u64cd\u4f5c\u7684\u5e42\u7b49\u6027\u3002<\/p>\n\n\n\n<ul>\n<li>\u6d88\u606f\u53bb\u91cd\u3002<\/li>\n\n\n\n<li>\u5f02\u6b65\u91cd\u8bd5\u3002<\/li>\n\n\n\n<li>\u6307\u6570\u9000\u907f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>6\uff09\u8d44\u6e90\u8bbe\u9650<\/strong><\/p>\n\n\n\n<p>\u53cc 11 \u5982\u4f55\u907f\u514d\u5973\u53cb\u8d25\u5bb6\uff1f\u63d0\u524d\u628a\u81ea\u5df1\u4fe1\u7528\u5361\u989d\u5ea6\u8c03\u4f4e\u3002<\/p>\n\n\n\n<ul>\n<li>\u76ee\u7684\uff1a\u9632\u6b62\u8d44\u6e90\u88ab\u5f02\u5e38\u6d41\u91cf\u8017\u5c3d\u3002<\/li>\n\n\n\n<li>\u8d44\u6e90\u7c7b\u578b\uff1a\u7ebf\u7a0b\u3001\u961f\u5217\u3001DB \u8fde\u63a5\u3002<\/li>\n\n\n\n<li>\u8bbe\u9650\u65b9\u5f0f\uff1a\u8d44\u6e90\u6c60\u5316\u3001\u6709\u754c\u961f\u5217\u3002<\/li>\n\n\n\n<li>\u8d85\u9650\u5904\u7406\uff1a\u8fd4\u56de ServiceUnavailable \/ QuotaExceeded\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>7\uff09\u8d44\u6e90\u9694\u79bb<\/strong><\/p>\n\n\n\n<p>\u53cc 12 \u5973\u53cb\u8fd8\u662f\u8981\u8d25\u5bb6\uff1f\u5f97\u561e\u5237\u4f60\u81ea\u4e2a\u7684\u5361\u5427\uff0c\u522b\u52a8\u6211\u7684\u3002<\/p>\n\n\n\n<ul>\n<li>\u76ee\u7684\uff1a\u9632\u6b62\u8d44\u6e90\u88ab\u90e8\u5206\u5f02\u5e38\u6d41\u91cf\u8017\u5c3d\uff1b\u4e3a VIP \u5ba2\u6237\u63d0\u4f9b\u670d\u52a1\u8d28\u91cf\u4fdd\u8bc1\uff08QoS\uff09\u3002<\/li>\n\n\n\n<li>\u9694\u79bb\u65b9\u5f0f\uff1a\u961f\u5217\u5212\u5206\u3001\u72ec\u7acb\u96c6\u7fa4\uff1b\u6ce8\u610f\u5904\u7406\u4f18\u5148\u7ea7\u548c\u8d44\u6e90\u5206\u914d\u6bd4\u4f8b\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>8\uff09\u5b89\u5168\u751f\u4ea7<\/strong><\/p>\n\n\n\n<p>\u5973\u53cb\u54ed\u7740\u8bf4\u518d\u8ba9\u6211\u6700\u540e\u5241\u4e00\u6b21\u624b\u5427\uff1f\u5b89\u5168\u7b2c\u4e00\uff0c\u5b81\u613f\u5fc3\u75bc\u4e5f\u4e0d\u8981\u8089\u75bc\u3002<\/p>\n\n\n\n<p>\u7a0b\u5e8f\u52a8\u6001\u6027\uff1a\u5f00\u5173\u3001\u914d\u7f6e\u3001\u70ed\u5347\u7ea7\u3002<\/p>\n\n\n\n<ul>\n<li>Switch\uff1a\u7c7b\u578b\u5b89\u5168\uff1b\u4fb5\u5165\u6027\u5c0f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5ba1\u6838\u673a\u5236\uff1a\u4ee3\u7801 Review\u3001\u53d1\u5e03\u5ba1\u6279\u3002<\/p>\n\n\n\n<p>\u7070\u5ea6\u53d1\u5e03\uff1b\u5206\u6279\u90e8\u7f72\uff1b\u56de\u6eda\u9884\u6848\u3002<\/p>\n\n\n\n<ul>\n<li>DUCT\uff1a\u81ea\u52a8\/\u624b\u52a8\u8c03\u6574 HSF \u8282\u70b9\u6743\u91cd\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>3\u3001\u53ef\u7ef4\u62a4\u6027\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u524d\u4eba\u683d\u6811\uff0c\u540e\u4eba\u4e58\u51c9\u3002<\/p>\n\n\n\n<p>\u524d\u4eba\u6316\u5751\uff0c\u540e\u4eba\u51c9\u51c9\u3002<\/p>\n\n\n\n<p>\u7ef4\u62a4\u7684\u82f1\u6587\u662f maintain\uff0c\u4e5f\u80fd\u7ffb\u8bd1\u6210\uff1a\u7ef4\u6301\u3001\u4f9b\u7ed9\u3002\u6240\u4ee5\u8f6f\u4ef6\u7ef4\u62a4\u80fd\u6709\u591a\u91cd\u8981\uff1f\u5b83\u5c31\u662f\u8f6f\u4ef6\u7cfb\u7edf\u7684\u547c\u5438\u673a\u548c\u98df\u7269\u7ba1\u9053\uff0c\u7ef4\u6301\u8f6f\u4ef6\u751f\u547d\u7684\u5fc5\u8981\u4f9b\u7ed9\u3002<\/p>\n\n\n\n<p>\u7cfb\u7edf\u5f00\u53d1\u5b8c\u6210\u4e0a\u7ebf\uff0c\u4e0d\u8fc7\u53ea\u662f\u628a\u5b83\u201c\u751f\u201d\u4e0b\u6765\u800c\u5df2\u3002\u8f6f\u4ef6\u771f\u6b63\u80fd\u53d1\u6325\u591a\u5927\u4ef7\u503c\uff0c\u770b\u7684\u662f\u4ea4\u4ed8\u540e\u6301\u7eed\u7684\u4ef7\u503c\u5151\u73b0\u8fc7\u7a0b \u2014\u2014 \u662f\u4e0d\u65ad\u8301\u58ee\u6210\u957f\uff0c\u4e3a\u7528\u6237\u53d1\u5149\u53d1\u70ed\uff1f\u8fd8\u662f\u6162\u6162\u5815\u843d\uff0c\u9010\u6e10\u88ab\u7528\u6237\u6240\u9057\u5fd8\uff1f\u8fd9\u5e76\u4e0d\u662f\u53d6\u51b3\u4e8e\u5b83\u5f53\u4e0b\u77ac\u65f6\u662f\u5426\u8db3\u591f\u4f18\u79c0\uff08\u6027\u80fd\uff09\u548c\u9760\u8c31\uff08\u7a33\u5b9a\uff09\uff0c\u800c\u662f\u53d6\u51b3\u4e8e\u672a\u6765 \u2014\u2014 \u80fd\u5426\u5728\u4e0d\u65ad\u53d8\u5316\u7684\u5e02\u573a\u73af\u5883\u3001\u5ba2\u6237\u9700\u6c42\u548c\u4eba\u4e3a\u56e0\u7d20\u4e2d\uff0c\u59cb\u7ec8\u4fdd\u6301\u8db3\u591f\u4f18\u79c0\u548c\u9760\u8c31\uff0c\u5e76\u4e14\u80fd\u8d8a\u6765\u8d8a\u597d\u3002<\/p>\n\n\n\n<p>\u76f8\u6bd4\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u800c\u8a00\uff0c\u53ef\u7ef4\u62a4\u6027\u6240\u4f53\u73b0\u7684\u4ef7\u503c\u5f80\u5f80\u662f\u6700\u957f\u8fdc\u3001\u4f46\u4e5f\u6700\u96be\u5728\u77ed\u671f\u5185\u53ef\u5151\u73b0\u7684\uff0c\u56e0\u6b64\u5f88\u591a\u8f6f\u4ef6\u9879\u76ee\u90fd\u9009\u62e9\u4e86\u5728\u524d\u671f\u727a\u7272\u53ef\u7ef4\u62a4\u6027\u3002\u8fd9\u6837\u51b3\u7b56\u5e26\u6765\u7684\u540e\u679c\uff0c\u5c31\u8ddf\u67b6\u6784\u8bbe\u8ba1\u4e00\u6837\uff0c\u662f\u51e0\u4e4e\u65e0\u6cd5\uff08\u6216\u8005\u9700\u8981\u975e\u5e38\u9ad8\u7684\u6210\u672c\uff09\u53bb\u5f25\u8865\u548c\u633d\u56de\u7684\u3002\u592a\u591a\u7684\u8f6f\u4ef6\u9879\u76ee\uff0c\u5c31\u662f\u56e0\u4e3a\u8d8a\u6765\u8d8a\u4e0d\u53ef\u7ef4\u62a4\uff08\u4ee3\u7801\u6539\u4e0d\u52a8\u3001bug \u4fee\u4e0d\u5b8c\u3001feature \u52a0\u4e0d\u4e0a\uff09\uff0c\u6700\u540e\u53ea\u80fd\u6162\u6162\u6ca6\u843d\u4e3a\u4e00\u4e2a\u8c01\u90fd\u4e0d\u60f3\u78b0\u7684\u9057\u7559\u9879\u76ee\u3002<\/p>\n\n\n\n<p><strong>\u8861\u91cf\u6307\u6807<\/strong><\/p>\n\n\n\n<p>\u76f8\u6bd4\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u800c\u8a00\uff0c\u53ef\u7ef4\u62a4\u6027\u786e\u5b9e\u4e0d\u592a\u597d\u91cf\u5316\uff08\u827a\u672f\u6210\u5206 &gt; \u79d1\u5b66\u6210\u5206\uff09\u3002\u8fd9\u91cc\u6211\u9009\u53d6\u4e86\u51e0\u4e2a\u504f\u5b9a\u6027\u5206\u6790\u7684\u6307\u6807\uff1a<\/p>\n\n\n\n<p><strong>1\uff09\u590d\u6742\u5ea6\uff08Complexity\uff09\uff1a\u662f\u5426\u590d\u6742\u5ea6\u53ef\u63a7\uff1f<\/strong><\/p>\n\n\n\n<ul>\n<li>\u7f16\u7801\uff1a\u7b80\u6d01\u5ea6\u3001\u547d\u540d\u4e00\u81f4\u6027\u3001\u4ee3\u7801\u884c\u6570\u7b49\u3002<\/li>\n\n\n\n<li>\u67b6\u6784\uff1a\u7ec4\u4ef6\u8026\u5408\u5ea6\u3001\u5c42\u6b21\u6e05\u6670\u5ea6\u3001\u804c\u8d23\u5355\u4e00\u6027\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2\uff09\u53ef\u6269\u5c55\u6027\uff08Extensibility\uff09\uff1a\u662f\u5426\u6613\u4e8e\u53d8\u66f4\uff1f<\/strong><\/p>\n\n\n\n<ul>\n<li>\u9700\u8981\u53d8\u66f4\u4ee3\u7801\u6216\u914d\u7f6e\u65f6\uff0c\u662f\u5426\u7b80\u5355\u4f18\u96c5\u3001\u4e0d\u6613\u51fa\u9519\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>3\uff09\u53ef\u8fd0\u7ef4\u6027\uff08Operability\uff09\uff1a\u662f\u5426\u65b9\u4fbf\u8fd0\u7ef4\uff1f<\/strong><\/p>\n\n\n\n<ul>\n<li>\u65e5\u5fd7\u3001\u76d1\u63a7\u662f\u5426\u5b8c\u5584\uff1b\u90e8\u7f72\u3001\u6269\u5bb9\u662f\u5426\u5bb9\u6613\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u91cd\u8981\u6027<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u7ed9\u4e86\u51e0\u4e2a\u89c2\u70b9\uff0c\u8fdb\u4e00\u6b65\u5f3a\u8c03\u53ef\u7ef4\u62a4\u6027\u7684\u91cd\u8981\u6027\u3002<\/p>\n\n\n\n<ul>\n<li>\u8f6f\u4ef6\u751f\u547d\u5468\u671f\uff1a\u7ef4\u62a4\u5468\u671f &gt;&gt; \u5f00\u53d1\u5468\u671f\u3002<\/li>\n\n\n\n<li>\u7834\u7a97\u6548\u5e94\u3001\u71b5\u589e\u5b9a\u5f8b\uff1a\u53ef\u7ef4\u62a4\u6027\u4f1a\u8d8b\u5411\u4e8e\u8d8a\u6765\u8d8a\u5dee\u3002<\/li>\n\n\n\n<li>\u9057\u7559\u7cfb\u7edf\u7684\u5371\u5bb3\uff1a\u7406\u89e3\u96be\u5ea6\uff0c\u4fee\u6539\u6210\u672c\uff0c\u53d8\u66f4\u98ce\u9669\uff1b\u9677\u5165\u4e0d\u65ad\u8e29\u5751\u3001\u586b\u5751\u3001\u53c8\u6316\u5751\u7684\u5faa\u73af\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4f18\u5316\u539f\u5219<\/strong><\/p>\n\n\n\n<p>\u4f60\u5e94\u8be5\u505a\u7684\uff1a\u9075\u5faa KISS \u539f\u5219\u3001DRY \u539f\u5219\u3001\u5404\u79cd\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u67b6\u6784\u8bbe\u8ba1\u539f\u5219\u7b49\u3002<\/p>\n\n\n\n<p>\u4f60\u4e0d\u5e94\u8be5\u505a\u7684\uff1a\u5f15\u5165\u8fc7\u591a\u4e34\u65f6\u6027\u3001Hack \u4ee3\u7801\uff1b\u529f\u80fd Work \u5c31 OK\uff0c\u6b20\u4e00\u5806\u6280\u672f\u503a\uff08\u51fa\u6765\u6df7\u603b\u662f\u8981\u8fd8\u7684\uff09\u3002<\/p>\n\n\n\n<p><strong>\u4f18\u5316\u624b\u6bb5<\/strong><\/p>\n\n\n\n<p>\u5e38\u7528\u7684\u53ef\u7ef4\u62a4\u6027\u4f18\u5316\u624b\u6bb5\u6709\u54ea\u4e9b\uff1f\u8fd9\u91cc\u6211\u603b\u7ed3\u4e86 4 \u4e2a\u5957\u8def\uff1a<\/p>\n\n\n\n<p><strong>1\uff09\u7f16\u7801\u89c4\u8303<\/strong><\/p>\n\n\n\n<p>\u65e0\u89c4\u77e9\uff0c\u4e0d\u6210\u65b9\u5706\u3002<\/p>\n\n\n\n<ul>\n<li>\u7f16\u7801\uff1a\u63a8\u8350\u300aJava \u5f00\u53d1\u624b\u518c\u300b\uff0c\u53e6\u5916\u4e5f\u63a8\u8350 The Art of Readable Code \u8fd9\u672c\u4e66\u3002<\/li>\n\n\n\n<li>\u65e5\u5fd7\uff1a\u65e0\u76f2\u70b9\u3001\u65e0\u5197\u4f59\u3001TraceID\u3002<\/li>\n\n\n\n<li>\u6d4b\u8bd5\uff1a\u4ee3\u7801\u8986\u76d6\u5ea6\u3001\u81ea\u52a8\u5316\u56de\u5f52\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2\uff09\u4ee3\u7801\u91cd\u6784<\/strong><\/p>\n\n\n\n<p>\u522b\u7070\u5fc3\uff0c\u4ee3\u7801\u8fd8\u6709\u6551\u3002<\/p>\n\n\n\n<ul>\n<li>\u4f55\u65f6\u91cd\u6784\uff1a\u4efb\u4f55\u65f6\u5019\u4ee3\u7801\u4e2d\u55c5\u5230\u574f\u5473\u9053\uff08bad smell\uff09\u3002<\/li>\n\n\n\n<li>\u91cd\u6784\u8282\u594f\uff1a\u5c0f\u6b65\u8fed\u4ee3\u3001\u56de\u5f52\u9a8c\u8bc1\u3002<\/li>\n\n\n\n<li>\u91cd\u6784 vs. \u91cd\u5199\uff1a\u9700\u8981\u7efc\u5408\u8003\u8651\u6210\u672c\u3001\u98ce\u9669\u3001\u5e76\u884c\u7248\u672c\u7ef4\u62a4\u7b49\u56e0\u7d20\u3002<\/li>\n\n\n\n<li>\u63a8\u8350\u9605\u8bfb\uff1aRefactoring: Improving the Design of Existing Code\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>3\uff09\u6570\u636e\u9a71\u52a8<\/strong><\/p>\n\n\n\n<p>\u76f8\u4fe1\u6570\u636e\u7684\u529b\u91cf\u3002<\/p>\n\n\n\n<p>\u7cfb\u7edf\u6570\u636e\uff1a\u76d1\u63a7\u8986\u76d6\u3001Metrics \u91c7\u96c6\u7b49\uff0c\u5bf9\u4e8e\u7406\u89e3\u7cfb\u7edf\u3001\u6392\u67e5\u95ee\u9898\u81f3\u5173\u91cd\u8981\u3002<\/p>\n\n\n\n<p>\u4e1a\u52a1\u6570\u636e\uff1a\u4e00\u81f4\u6027\u6821\u9a8c\u3001\u65e7\u6570\u636e\u6e05\u7406\u7b49\uff1b\u8981\u76f8\u4fe1\uff0c\u6570\u636e\u5f80\u5f80\u6bd4\u4ee3\u7801\u8981\u6d3b\u5f97\u66f4\u4e45\u3002<\/p>\n\n\n\n<p><strong>4\uff09\u6280\u672f\u6f14\u8fdb<\/strong><\/p>\n\n\n\n<p>\u6280\u672f\u662f\u7b2c\u4e00\u751f\u4ea7\u529b\u3002<\/p>\n\n\n\n<p>\u6b7b\u5b88\u9635\u5730 or \u7d27\u8ddf\u6f6e\u6d41? \u9700\u8981\u7efc\u5408\u8bc4\u4f30\u98ce\u9669\u3001\u751f\u4ea7\u529b\u3001\u5b66\u4e60\u6210\u672c\u3002<\/p>\n\n\n\n<p>\u5f53\u524d\u65b9\u5411\uff1a\u5fae\u670d\u52a1\u5316\u3001\u5bb9\u5668\u5316\u3002<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u7ed3\u8bed<\/strong><\/p>\n\n\n\n<p>Truth lies underneath the skin &#8211; \u771f\u7406\u6c38\u8fdc\u6697\u85cf\u5728\u8868\u8c61\u5e95\u4e0b\u3002<\/p>\n\n\n\n<p>\u5bf9\uff0c\u5c31\u5728\u8fd9\u53e5\u8bdd\u5e95\u4e0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6f\u4ef6\u5de5\u7a0b\u9886\u57df\u5b58\u5728\u4e00\u4e2a\u5171\u8bc6\uff1a\u7ef4\u62a4\u4ee3\u7801\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u8981\u8fdc\u591a\u4e8e\u5199\u4ee3\u7801\u3002\u800c\u6574\u4e2a\u4ee3\u7801\u7ef4\u62a4\u8fc7\u7a0b\u4e2d\uff0c\u6700\u60ca\u5fc3\u52a8\u9b44\u4e0e\u6263\u4eba&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2023\/02\/05\/it-%e6%95%85%e9%9a%9c%e6%b2%bb%e7%90%86-%e8%bf%90%e7%bb%b4%e6%95%91%e7%81%ab%e5%bf%85%e5%a4%87%ef%bc%9a%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e4%b8%8e%e7%b3%bb%e7%bb%9f%e4%bc%98%e5%8c%96%e6%89%8b\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">IT \u6545\u969c\u6cbb\u7406 &#8211; \u8fd0\u7ef4\u6551\u706b\u5fc5\u5907\uff1a\u95ee\u9898\u6392\u67e5\u4e0e\u7cfb\u7edf\u4f18\u5316\u624b\u518c\uff08\u7ed3\u5408\u6559\u8bad\u73b0\u8eab\u8bf4\u6cd5\uff09<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[15],"views":550,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1197"}],"collection":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/comments?post=1197"}],"version-history":[{"count":1,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1197\/revisions"}],"predecessor-version":[{"id":1199,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1197\/revisions\/1199"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=1197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=1197"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=1197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}