{"id":163933,"date":"2024-11-05T03:38:30","date_gmt":"2024-11-04T19:38:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163933\/"},"modified":"2024-11-05T03:38:31","modified_gmt":"2024-11-04T19:38:31","slug":"%e8%a7%a3%e5%af%86redis%e4%b8%ad%e6%b4%bb%e9%8e%96%e7%9a%84%e6%a9%9f%e5%88%b6%ef%bc%88%e4%bb%80%e9%ba%bc%e6%98%afredis%e6%b4%bb%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163933\/","title":{"rendered":"\u89e3\u5bc6Redis\u4e2d\u6d3b\u9396\u7684\u6a5f\u5236\uff08\u4ec0\u9ebc\u662fredis\u6d3b\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e5%af%86redis%e4%b8%ad%e6%b4%bb%e9%8e%96%e7%9a%84%e6%a9%9f%e5%88%b6%ef%bc%88%e4%bb%80%e9%ba%bc%e6%98%afredis%e6%b4%bb%e9%8e%96%ef%bc%89-BSYYksUtbr\">\u89e3\u5bc6Redis\u4e2d\u6d3b\u9396\u7684\u6a5f\u5236\uff08\u4ec0\u9ebc\u662fredis\u6d3b\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u5728\u9ad8\u4f75\u767c\u7684\u74b0\u5883\u4e0b\uff0cRedis\u4e5f\u53ef\u80fd\u9762\u81e8\u4e00\u4e9b\u6311\u6230\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u6d3b\u9396\uff08Livelock\uff09\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u4e2d\u7684\u6d3b\u9396\u6a5f\u5236\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u5176\u6210\u56e0\u53ca\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%b4%bb%e9%8e%96%ef%bc%9f-BSYYksUtbr\">\u4ec0\u9ebc\u662f\u6d3b\u9396\uff1f<\/h2>\n<p>\u6d3b\u9396\u662f\u4e00\u7a2e\u4e26\u767c\u63a7\u5236\u554f\u984c\uff0c\u8207\u6b7b\u9396\uff08Deadlock\uff09\u4e0d\u540c\u3002\u5728\u6b7b\u9396\u4e2d\uff0c\u5169\u500b\u6216\u591a\u500b\u9032\u7a0b\u56e0\u4e92\u76f8\u7b49\u5f85\u800c\u7121\u6cd5\u7e7c\u7e8c\u57f7\u884c\uff0c\u800c\u5728\u6d3b\u9396\u4e2d\uff0c\u9032\u7a0b\u96d6\u7136\u4e0d\u518d\u7b49\u5f85\uff0c\u4f46\u7531\u65bc\u4e0d\u65b7\u5730\u6539\u8b8a\u72c0\u614b\u800c\u7121\u6cd5\u5b8c\u6210\u4efb\u52d9\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u591a\u500b\u9032\u7a0b\u6216\u7dda\u7a0b\u4e4b\u9593\u7684\u7af6\u722d\u4e2d\uff0c\u5c0e\u81f4\u5b83\u5011\u4e0d\u65b7\u5730\u91cd\u8a66\u64cd\u4f5c\uff0c\u4f46\u59cb\u7d42\u7121\u6cd5\u6210\u529f\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e6%b4%bb%e9%8e%96%e6%a9%9f%e5%88%b6-BSYYksUtbr\">Redis\u4e2d\u7684\u6d3b\u9396\u6a5f\u5236<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u6d3b\u9396\u901a\u5e38\u767c\u751f\u5728\u4f7f\u7528\u5206\u4f48\u5f0f\u9396\u7684\u60c5\u6cc1\u4e0b\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u7372\u53d6\u540c\u4e00\u628a\u9396\u6642\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u6d3b\u9396\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u6d3b\u9396\u767c\u751f\u7684\u5e7e\u500b\u5e38\u898b\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8a66\u6a5f\u5236\uff1a<\/strong>\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u5b83\u53ef\u80fd\u6703\u7acb\u5373\u91cd\u8a66\uff0c\u9019\u6a23\u5176\u4ed6\u5ba2\u6236\u7aef\u4e5f\u6703\u540c\u6642\u91cd\u8a66\uff0c\u5c0e\u81f4\u6240\u6709\u5ba2\u6236\u7aef\u90fd\u7121\u6cd5\u7372\u53d6\u9396\u3002<\/li>\n<li><strong>\u512a\u5148\u7d1a\u53cd\u8f49\uff1a<\/strong>\u5982\u679c\u4e00\u500b\u9ad8\u512a\u5148\u7d1a\u7684\u4efb\u52d9\u88ab\u4f4e\u512a\u5148\u7d1a\u7684\u4efb\u52d9\u963b\u585e\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9ad8\u512a\u5148\u7d1a\u4efb\u52d9\u4e0d\u65b7\u91cd\u8a66\uff0c\u800c\u4f4e\u512a\u5148\u7d1a\u4efb\u52d9\u537b\u7121\u6cd5\u5b8c\u6210\u3002<\/li>\n<li><strong>\u4e0d\u65b7\u7684\u72c0\u614b\u8b8a\u5316\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u9032\u7a0b\u53ef\u80fd\u6703\u56e0\u70ba\u4e0d\u65b7\u5730\u6539\u8b8a\u72c0\u614b\u800c\u7121\u6cd5\u9054\u6210\u6700\u7d42\u76ee\u6a19\uff0c\u9019\u7a2e\u60c5\u6cc1\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\u5c24\u70ba\u660e\u986f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b4%bb%e9%8e%96%e7%9a%84%e7%a4%ba%e4%be%8b-BSYYksUtbr\">\u6d3b\u9396\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728Redis\u4e2d\u53ef\u80fd\u51fa\u73fe\u6d3b\u9396\u7684\u60c5\u6cc1\uff1a<\/p>\n<pre><code>SET lock_key \"locked\" NX EX 10\n\/\/ \u5ba2\u6236\u7aefA\u5617\u8a66\u7372\u53d6\u9396\nif (\u7372\u53d6\u9396\u6210\u529f) {\n    \/\/ \u57f7\u884c\u4efb\u52d9\n} else {\n    \/\/ \u7372\u53d6\u9396\u5931\u6557\uff0c\u91cd\u8a66\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u5ba2\u6236\u7aefA\u548c\u5ba2\u6236\u7aefB\u540c\u6642\u5617\u8a66\u7372\u53d6\u540c\u4e00\u628a\u9396\u3002\u5982\u679c\u5169\u8005\u90fd\u5931\u6557\u4e26\u7acb\u5373\u91cd\u8a66\uff0c\u5247\u53ef\u80fd\u5c0e\u81f4\u6d3b\u9396\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%baredis%e4%b8%ad%e7%9a%84%e6%b4%bb%e9%8e%96%e5%95%8f%e9%a1%8c-BSYYksUtbr\">\u5982\u4f55\u89e3\u6c7aRedis\u4e2d\u7684\u6d3b\u9396\u554f\u984c<\/h2>\n<p>\u70ba\u4e86\u907f\u514d\u6d3b\u9396\u7684\u767c\u751f\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u96a8\u6a5f\u9000\u907f\uff08Exponential Backoff\uff09\uff1a<\/strong>\u5728\u91cd\u8a66\u7372\u53d6\u9396\u6642\uff0c\u589e\u52a0\u7b49\u5f85\u6642\u9593\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u540c\u6642\u91cd\u8a66\u7684\u6a5f\u6703\u3002<\/li>\n<li><strong>\u4f7f\u7528\u516c\u5e73\u9396\uff1a<\/strong>\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u9806\u5e8f\uff0c\u907f\u514d\u512a\u5148\u7d1a\u53cd\u8f49\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u8d85\u6642\uff1a<\/strong>\u70ba\u9396\u8a2d\u7f6e\u5408\u7406\u7684\u8d85\u6642\u6642\u9593\uff0c\u9632\u6b62\u9577\u6642\u9593\u4f54\u7528\u9396\u5c0e\u81f4\u5176\u4ed6\u9032\u7a0b\u7121\u6cd5\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-BSYYksUtbr\">\u7d50\u8ad6<\/h2>\n<p>\u6d3b\u9396\u662f\u4e00\u500b\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\u9700\u8981\u7279\u5225\u6ce8\u610f\u7684\u554f\u984c\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528Redis\u9032\u884c\u5206\u4f48\u5f0f\u9396\u6642\u3002\u901a\u904e\u7406\u89e3\u6d3b\u9396\u7684\u6210\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u5728\u8a2d\u8a08\u7cfb\u7d71\u6642\uff0c\u958b\u767c\u8005\u61c9\u8a72\u8003\u616e\u5230\u9019\u4e9b\u56e0\u7d20\uff0c\u4ee5\u907f\u514d\u6d3b\u9396\u5e36\u4f86\u7684\u6f5b\u5728\u98a8\u96aa\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u5bc6Redis\u4e2d\u6d3b\u9396\u7684\u6a5f\u5236\uff0c\u6df1\u5165\u4e86\u89e3\u4ec0\u9ebc\u662fRedis\u6d3b\u9396\u53ca\u5176\u5f71\u97ff\uff0c\u4e26\u63a2\u7d22\u89e3\u6c7a\u65b9\u6848\u4ee5\u63d0\u5347\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-163933","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=163933"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163933\/revisions"}],"predecessor-version":[{"id":163934,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163933\/revisions\/163934"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}