{"id":129415,"date":"2024-10-26T21:27:21","date_gmt":"2024-10-26T13:27:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129415\/"},"modified":"2024-10-26T21:27:22","modified_gmt":"2024-10-26T13:27:22","slug":"redis%e9%8e%96%e6%ad%bb%e8%a7%a3%e9%96%8b%e9%82%a3%e6%89%87%e9%97%9c%e9%8d%b5%e4%b9%8b%e9%96%80%ef%bc%88redis%e9%8e%96%e6%ad%bb%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129415\/","title":{"rendered":"Redis\u9396\u6b7b\u89e3\u958b\u90a3\u6247\u95dc\u9375\u4e4b\u9580\uff08redis\u9396\u6b7b\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%8e%96%e6%ad%bb%e8%a7%a3%e9%96%8b%e9%82%a3%e6%89%87%e9%97%9c%e9%8d%b5%e4%b9%8b%e9%96%80%ef%bc%88redis%e9%8e%96%e6%ad%bb%ef%bc%89-VQstTlnsNe\">Redis\u9396\u6b7b\u89e3\u958b\u90a3\u6247\u95dc\u9375\u4e4b\u9580\uff08redis\u9396\u6b7b\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\u96a8\u8457\u61c9\u7528\u7684\u8907\u96dc\u6027\u589e\u52a0\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528Redis\u6642\u53ef\u80fd\u6703\u9047\u5230\u9396\u6b7b\uff08Deadlock\uff09\u554f\u984c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u9396\u6b7b\u7684\u6210\u56e0\u3001\u5f71\u97ff\u53ca\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u61c9\u5c0d\u9019\u4e00\u6311\u6230\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%8e%96%e6%ad%bb%ef%bc%9f-VQstTlnsNe\">\u4ec0\u9ebc\u662f\u9396\u6b7b\uff1f<\/h2>\n<p>\u9396\u6b7b\u662f\u4e00\u7a2e\u60c5\u6cc1\uff0c\u7576\u5169\u500b\u6216\u591a\u500b\u9032\u7a0b\u76f8\u4e92\u7b49\u5f85\u5c0d\u65b9\u91cb\u653e\u8cc7\u6e90\u6642\uff0c\u5c0e\u81f4\u6240\u6709\u9032\u7a0b\u7121\u6cd5\u7e7c\u7e8c\u57f7\u884c\u3002\u5728Redis\u4e2d\uff0c\u9019\u901a\u5e38\u767c\u751f\u5728\u4f7f\u7528\u5206\u4f48\u5f0f\u9396\u7684\u60c5\u6cc1\u4e0b\u3002\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u4e86\u67d0\u500b\u9396\uff0c\u4f46\u53c8\u9700\u8981\u53e6\u4e00\u500b\u9032\u7a0b\u6301\u6709\u7684\u9396\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u9396\u6b7b\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-VQstTlnsNe\">Redis\u9396\u7684\u5be6\u73fe<\/h2>\n<p>Redis\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\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\nEXPIRE lock_key 10\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0cSETNX\u547d\u4ee4\u7528\u65bc\u8a2d\u7f6e\u9396\uff0c\u53ea\u6709\u7576\u9396\u4e0d\u5b58\u5728\u6642\u624d\u6703\u6210\u529f\u8a2d\u7f6e\u3002EXPIRE\u547d\u4ee4\u5247\u7528\u65bc\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u9032\u7a0b\u5d29\u6f70\u800c\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e9%8e%96%e6%ad%bb%e7%9a%84%e6%88%90%e5%9b%a0-VQstTlnsNe\">\u9396\u6b7b\u7684\u6210\u56e0<\/h2>\n<ul>\n<li><strong>\u591a\u91cd\u9396\u8acb\u6c42\uff1a<\/strong>\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u591a\u500b\u9396\u6642\uff0c\u5982\u679c\u9019\u4e9b\u9396\u7684\u7372\u53d6\u9806\u5e8f\u4e0d\u4e00\u81f4\uff0c\u5c31\u53ef\u80fd\u5c0e\u81f4\u9396\u6b7b\u3002<\/li>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u4e0d\u7576\uff1a<\/strong>\u5982\u679c\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u5f97\u904e\u77ed\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u5728\u9032\u7a0b\u5b8c\u6210\u4e4b\u524d\u5c31\u88ab\u81ea\u52d5\u91cb\u653e\uff0c\u5f9e\u800c\u5f15\u767c\u5176\u4ed6\u9032\u7a0b\u7684\u9396\u8acb\u6c42\u3002<\/li>\n<li><strong>\u7db2\u7d61\u5ef6\u9072\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u5ef6\u9072\u53ef\u80fd\u5c0e\u81f4\u9032\u7a0b\u4e4b\u9593\u7684\u901a\u4fe1\u4e0d\u53ca\u6642\uff0c\u5f9e\u800c\u589e\u52a0\u9396\u6b7b\u7684\u98a8\u96aa\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%baredis%e9%8e%96%e6%ad%bb%e5%95%8f%e9%a1%8c-VQstTlnsNe\">\u5982\u4f55\u89e3\u6c7aRedis\u9396\u6b7b\u554f\u984c<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u89e3\u6c7aRedis\u9396\u6b7b\u554f\u984c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e9%8e%96%e7%9a%84%e6%9c%89%e5%ba%8f%e7%8d%b2%e5%8f%96-VQstTlnsNe\">1. \u9396\u7684\u6709\u5e8f\u7372\u53d6<\/h3>\n<p>\u78ba\u4fdd\u6240\u6709\u9032\u7a0b\u5728\u7372\u53d6\u9396\u6642\u9075\u5faa\u76f8\u540c\u7684\u9806\u5e8f\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u56e0\u70ba\u7372\u53d6\u9396\u7684\u9806\u5e8f\u4e0d\u4e00\u81f4\u800c\u5c0e\u81f4\u7684\u9396\u6b7b\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e8%b6%85%e6%99%82%e6%a9%9f%e5%88%b6-VQstTlnsNe\">2. \u4f7f\u7528\u8d85\u6642\u6a5f\u5236<\/h3>\n<p>\u5728\u8a2d\u7f6e\u9396\u6642\uff0c\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u5408\u7406\u7684\u8d85\u6642\u6642\u9593\u3002\u9019\u6a23\u5373\u4f7f\u9032\u7a0b\u5d29\u6f70\uff0c\u9396\u4e5f\u80fd\u5728\u4e00\u5b9a\u6642\u9593\u5167\u81ea\u52d5\u91cb\u653e\uff0c\u6e1b\u5c11\u9396\u6b7b\u7684\u98a8\u96aa\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8redlock%e7%ae%97%e6%b3%95-VQstTlnsNe\">3. \u4f7f\u7528Redlock\u7b97\u6cd5<\/h3>\n<p>Redlock\u662f\u4e00\u7a2e\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396\u7b97\u6cd5\uff0c\u80fd\u5920\u6709\u6548\u5730\u89e3\u6c7a\u9396\u6b7b\u554f\u984c\u3002\u5b83\u901a\u904e\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e0a\u7372\u53d6\u9396\u4f86\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002<\/p>\n<pre><code>function acquireLock($key, $value, $timeout) {\n    $result = $redis-&gt;set($key, $value, ['NX', 'EX' =&gt; $timeout]);\n    return $result;\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-VQstTlnsNe\">\u7d50\u8ad6<\/h2>\n<p>Redis\u9396\u6b7b\u554f\u984c\u662f\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u5e38\u898b\u7684\u6311\u6230\u4e4b\u4e00\u3002\u901a\u904e\u5408\u7406\u7684\u9396\u7ba1\u7406\u7b56\u7565\u548c\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u9396\u6b7b\u7684\u98a8\u96aa\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u4e86\u89e3\u548c\u638c\u63e1\u9019\u4e9b\u6280\u8853\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u5728\u4f7f\u7528Redis\u6642\u66f4\u597d\u5730\u61c9\u5c0d\u5404\u7a2e\u6311\u6230\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u9396\u6b7b\u554f\u984c\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u63ed\u793a\u5982\u4f55\u6709\u6548\u89e3\u958b\u9396\u5b9a\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\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-129415","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129415","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=129415"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129415\/revisions"}],"predecessor-version":[{"id":129416,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129415\/revisions\/129416"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}