{"id":180622,"date":"2024-11-09T11:48:18","date_gmt":"2024-11-09T03:48:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180622\/"},"modified":"2024-11-09T11:48:18","modified_gmt":"2024-11-09T03:48:18","slug":"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90redis%e9%8e%96%e6%a9%9f%e5%88%b6%e7%9a%84%e5%8e%9f%e7%90%86%ef%bc%88redis%e9%8e%96%e6%a9%9f%e5%88%b6%e5%8e%9f%e7%90%866%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180622\/","title":{"rendered":"\u6df1\u5165\u89e3\u6790Redis\u9396\u6a5f\u5236\u7684\u539f\u7406\uff08redis\u9396\u6a5f\u5236\u539f\u74066\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90redis%e9%8e%96%e6%a9%9f%e5%88%b6%e7%9a%84%e5%8e%9f%e7%90%86-cAQUCiAEWg\">\u6df1\u5165\u89e3\u6790Redis\u9396\u6a5f\u5236\u7684\u539f\u7406<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\u662f\u81f3\u95dc\u91cd\u8981\u7684\u554f\u984c\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u6a5f\u5236\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406\u4e26\u767c\u8a2a\u554f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u9396\u6a5f\u5236\u7684\u539f\u7406\uff0c\u7279\u5225\u662f\u5176\u5be6\u73fe\u65b9\u5f0f\u53ca\u4f7f\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-cAQUCiAEWg\">\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u767c\u751f\u3002Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u662f\u57fa\u65bcSETNX\u547d\u4ee4\u7684\u9396\u3002<\/p>\n<h2 id=\"setnx%e5%91%bd%e4%bb%a4%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-cAQUCiAEWg\">SETNX\u547d\u4ee4\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u7684\u4f5c\u7528\u662f\u7576\u6307\u5b9a\u7684\u9375\u4e0d\u5b58\u5728\u6642\uff0c\u5c07\u5176\u8a2d\u7f6e\u70ba\u6307\u5b9a\u7684\u503c\u3002\u9019\u4f7f\u5f97SETNX\u6210\u70ba\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u7406\u60f3\u9078\u64c7\u3002\u4ee5\u4e0b\u662fSETNX\u547d\u4ee4\u7684\u57fa\u672c\u7528\u6cd5\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>lock_key<\/code>\u662f\u9396\u7684\u540d\u7a31\uff0c\u800c<code>unique_lock_value<\/code>\u662f\u7528\u65bc\u8b58\u5225\u9396\u7684\u552f\u4e00\u503c\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u6210\u529f\u57f7\u884cSETNX\u547d\u4ee4\u6642\uff0c\u8868\u793a\u5b83\u7372\u5f97\u4e86\u9396\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u6301\u6709\u3002<\/p>\n<h2 id=\"%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-cAQUCiAEWg\">\u9396\u7684\u904e\u671f\u6642\u9593<\/h2>\n<p>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\uff0cRedis\u9396\u901a\u5e38\u6703\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u6301\u9396\u7684\u5ba2\u6236\u7aef\u5d29\u6f70\u6216\u672a\u80fd\u91cb\u653e\u9396\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u53ef\u4ee5\u4f7f\u7528<code>EXPIRE<\/code>\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>EXPIRE lock_key 10<\/code><\/pre>\n<p>\u9019\u8868\u793a\u9396\u572810\u79d2\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u9019\u7a2e\u65b9\u5f0f\u96d6\u7136\u6709\u6548\uff0c\u4f46\u4e5f\u9700\u8981\u6ce8\u610f\uff0c\u904e\u671f\u6642\u9593\u7684\u8a2d\u7f6e\u61c9\u6839\u64da\u5be6\u969b\u696d\u52d9\u9700\u6c42\u4f86\u8abf\u6574\uff0c\u4ee5\u907f\u514d\u56e0\u904e\u671f\u800c\u5c0e\u81f4\u7684\u8cc7\u6e90\u7af6\u722d\u3002<\/p>\n<h2 id=\"redlock%e7%ae%97%e6%b3%95-cAQUCiAEWg\">Redlock\u7b97\u6cd5<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u74b0\u5883\u4e2d\uff0c\u55ae\u4e00Redis\u5be6\u4f8b\u7684\u9396\u6a5f\u5236\u53ef\u80fd\u7121\u6cd5\u6eff\u8db3\u9ad8\u53ef\u7528\u6027\u548c\u4e00\u81f4\u6027\u7684\u9700\u6c42\u3002\u70ba\u6b64\uff0cRedis\u5275\u59cb\u4ebaAntirez\u63d0\u51fa\u4e86Redlock\u7b97\u6cd5\u3002Redlock\u662f\u4e00\u7a2e\u57fa\u65bc\u591a\u500bRedis\u5be6\u4f8b\u7684\u9396\u5be6\u73fe\u65b9\u5f0f\uff0c\u65e8\u5728\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002<\/p>\n<p>Redlock\u7684\u57fa\u672c\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u5ba2\u6236\u7aef\u5f9eN\u500bRedis\u5be6\u4f8b\u4e2d\u7372\u53d6\u9396\u3002<\/li>\n<li>\u6bcf\u500b\u5be6\u4f8b\u90fd\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u9396\uff0c\u4e26\u8a2d\u7f6e\u76f8\u540c\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u5ba2\u6236\u7aef\u9700\u8981\u5728\u5927\u591a\u6578\u5be6\u4f8b\uff08\u901a\u5e38\u662fN\/2 + 1\uff09\u4e2d\u6210\u529f\u7372\u5f97\u9396\uff0c\u624d\u80fd\u8a8d\u70ba\u9396\u7372\u53d6\u6210\u529f\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u5b8c\u8cc7\u6e90\u5f8c\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u91cb\u653e\u9396\uff0c\u9019\u901a\u5e38\u662f\u901a\u904e\u522a\u9664\u9396\u9375\u4f86\u5be6\u73fe\u3002<\/li>\n<\/ol>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-cAQUCiAEWg\">\u4f7f\u7528Redis\u9396\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u7c92\u5ea6\uff1a<\/strong>\u61c9\u6839\u64da\u696d\u52d9\u9700\u6c42\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u7c92\u5ea6\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6027\u80fd\u640d\u8017\u3002<\/li>\n<li><strong>\u904e\u671f\u6642\u9593\uff1a<\/strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u548c\u8cc7\u6e90\u7af6\u722d\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\uff1a<\/strong>\u78ba\u4fdd\u5728\u4f7f\u7528\u5b8c\u8cc7\u6e90\u5f8c\u53ca\u6642\u91cb\u653e\u9396\uff0c\u907f\u514d\u5f71\u97ff\u5176\u4ed6\u5ba2\u6236\u7aef\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cAQUCiAEWg\">\u7e3d\u7d50<\/h2>\n<p>Redis\u9396\u6a5f\u5236\u662f\u4e00\u7a2e\u6709\u6548\u7684\u4e26\u767c\u63a7\u5236\u624b\u6bb5\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7ba1\u7406\u8cc7\u6e90\u8a2a\u554f\u3002\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\u548cRedlock\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5be6\u73fe\u9ad8\u6548\u4e14\u53ef\u9760\u7684\u9396\u6a5f\u5236\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u4e00\u81f4\u6027\u7684\u61c9\u7528\u5834\u666f\uff0c\u9078\u64c7\u5408\u9069\u7684\u9396\u5be6\u73fe\u65b9\u5f0f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u9ad8\u6027\u80fd\u7684 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u9084\u662f\u9748\u6d3b\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u89e3\u6790Redis\u9396\u6a5f\u5236\u7684\u539f\u7406\uff0c\u63a2\u8a0e\u5176\u5de5\u4f5c\u65b9\u5f0f\u3001\u512a\u7f3a\u9ede\u53ca\u61c9\u7528\u5834\u666f\uff0c\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528Redis\u9396\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-180622","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180622","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=180622"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180622\/revisions"}],"predecessor-version":[{"id":180623,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180622\/revisions\/180623"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}