{"id":128323,"date":"2024-10-26T13:18:17","date_gmt":"2024-10-26T05:18:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128323\/"},"modified":"2024-10-26T13:18:17","modified_gmt":"2024-10-26T05:18:17","slug":"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e4%b8%8d%e5%8f%af%e9%87%8d%e5%85%a5%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128323\/","title":{"rendered":"Redis \u5be6\u73fe\u7684\u4e0d\u53ef\u91cd\u5165\u9396"},"content":{"rendered":"<h1 id=\"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e4%b8%8d%e5%8f%af%e9%87%8d%e5%85%a5%e9%8e%96-TlctHaXtFj\">Redis \u5be6\u73fe\u7684\u4e0d\u53ef\u91cd\u5165\u9396<\/h1>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u4e0d\u53ef\u91cd\u5165\u9396\uff08Non-Reentrant Lock\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u9396\u985e\u578b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u4e2d\u4e0d\u53ef\u91cd\u5165\u9396\u7684\u5be6\u73fe\u539f\u7406\u53ca\u5176\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%8d%e5%8f%af%e9%87%8d%e5%85%a5%e9%8e%96-TlctHaXtFj\">\u4ec0\u9ebc\u662f\u4e0d\u53ef\u91cd\u5165\u9396<\/h2>\n<p>\u4e0d\u53ef\u91cd\u5165\u9396\u662f\u4e00\u7a2e\u9396\u6a5f\u5236\uff0c\u7576\u4e00\u500b\u7dda\u7a0b\u5df2\u7d93\u7372\u5f97\u4e86\u9396\uff0c\u82e5\u518d\u6b21\u8acb\u6c42\u8a72\u9396\uff0c\u5247\u6703\u5c0e\u81f4\u6b7b\u9396\u3002\u9019\u610f\u5473\u8457\u540c\u4e00\u500b\u7dda\u7a0b\u4e0d\u80fd\u591a\u6b21\u7372\u5f97\u540c\u4e00\u628a\u9396\u3002\u9019\u7a2e\u9396\u7684\u7279\u9ede\u4f7f\u5f97\u5b83\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u80fd\u5920\u6709\u6548\u9632\u6b62\u91cd\u5165\u64cd\u4f5c\uff0c\u5f9e\u800c\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84%e4%b8%8d%e5%8f%af%e9%87%8d%e5%85%a5%e9%8e%96%e5%af%a6%e7%8f%be-TlctHaXtFj\">Redis \u4e2d\u7684\u4e0d\u53ef\u91cd\u5165\u9396\u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 SETNX \u547d\u4ee4\u4f86\u5be6\u73fe\u4e0d\u53ef\u91cd\u5165\u9396\u3002SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u6703\u5728\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u4e26\u8fd4\u56de 1\uff1b\u5982\u679c\u9375\u5df2\u5b58\u5728\uff0c\u5247\u8fd4\u56de 0\u3002\u9019\u4e00\u7279\u6027\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e5%af%a6%e7%8f%be%e6%ad%a5%e9%a9%9f-TlctHaXtFj\">\u57fa\u672c\u5be6\u73fe\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528 SETNX \u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9396\u9375\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u4f7f\u7528 DEL \u547d\u4ee4\u522a\u9664\u9396\u9375\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-TlctHaXtFj\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>function acquireLock($redis, $lockKey, $expire) {\n    $result = $redis-&gt;set($lockKey, 1, ['nx', 'ex' =&gt; $expire]);\n    return $result === true;\n}\n\nfunction releaseLock($redis, $lockKey) {\n    return $redis-&gt;del($lockKey);\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c`acquireLock` \u51fd\u6578\u5617\u8a66\u7372\u53d6\u9396\uff0c\u4e26\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1b`releaseLock` \u51fd\u6578\u5247\u7528\u65bc\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-TlctHaXtFj\">\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u4e0d\u53ef\u91cd\u5165\u9396\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u78ba\u4fdd\u67d0\u4e9b\u64cd\u4f5c\u4e0d\u6703\u88ab\u91cd\u8907\u57f7\u884c\u7684\u60c5\u6cc1\u4e0b\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u4efb\u52d9\u8abf\u5ea6\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u4efb\u52d9\u8abf\u5ea6\u7cfb\u7d71\u4e2d\uff0c\u9632\u6b62\u540c\u4e00\u4efb\u52d9\u88ab\u591a\u6b21\u57f7\u884c\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong>\u5728\u8cc7\u6e90\u5206\u914d\u4e2d\uff0c\u78ba\u4fdd\u540c\u4e00\u8cc7\u6e90\u4e0d\u6703\u88ab\u591a\u500b\u8acb\u6c42\u540c\u6642\u7372\u53d6\u3002<\/li>\n<li><strong>\u6578\u64da\u66f4\u65b0\uff1a<\/strong>\u5728\u6578\u64da\u66f4\u65b0\u904e\u7a0b\u4e2d\uff0c\u9632\u6b62\u91cd\u8907\u66f4\u65b0\u5c0e\u81f4\u7684\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-TlctHaXtFj\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u4e0d\u53ef\u91cd\u5165\u9396\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u5408\u7406\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u610f\u5916\u60c5\u6cc1\u5c0e\u81f4\u7684\u6b7b\u9396\u3002<\/li>\n<li>\u5728\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8a72\u78ba\u8a8d\u7576\u524d\u7dda\u7a0b\u6301\u6709\u8a72\u9396\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u5176\u4ed6\u9396\u6a5f\u5236\uff08\u5982\u53ef\u91cd\u5165\u9396\uff09\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-TlctHaXtFj\">\u7e3d\u7d50<\/h2>\n<p>Redis \u5be6\u73fe\u7684\u4e0d\u53ef\u91cd\u5165\u9396\u662f\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u9396\u6a5f\u5236\uff0c\u9069\u7528\u65bc\u591a\u7a2e\u5206\u4f48\u5f0f\u61c9\u7528\u5834\u666f\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\uff0c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u9396\u7ba1\u7406\u7684\u7cfb\u7d71\uff0cRedis \u63d0\u4f9b\u7684\u9019\u7a2e\u9396\u6a5f\u5236\u7121\u7591\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u9078\u64c7\u3002\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u5be6\u73fe\u7684\u4e0d\u53ef\u91cd\u5165\u9396\uff0c\u4e86\u89e3\u5176\u7279\u6027\u3001\u512a\u52e2\u53ca\u61c9\u7528\u5834\u666f\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u4e26\u767c\u63a7\u5236\u8207\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-128323","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128323","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=128323"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128323\/revisions"}],"predecessor-version":[{"id":128324,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128323\/revisions\/128324"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}