{"id":161157,"date":"2024-11-04T04:05:20","date_gmt":"2024-11-03T20:05:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161157\/"},"modified":"2024-11-04T04:05:20","modified_gmt":"2024-11-03T20:05:20","slug":"%e6%a9%9f%e5%88%b6-redis-%e7%a2%ba%e4%bf%9d%e9%ab%98%e6%95%88%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%af%a6%e7%8f%be%ef%bc%88redis-%e7%9a%84-lock%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161157\/","title":{"rendered":"\u6a5f\u5236 Redis \u78ba\u4fdd\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\uff08redis \u7684 lock\uff09"},"content":{"rendered":"<h1 id=\"%e6%a9%9f%e5%88%b6-redis-%e7%a2%ba%e4%bf%9d%e9%ab%98%e6%95%88%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%af%a6%e7%8f%be%ef%bc%88redis-%e7%9a%84-lock%ef%bc%89-tQdYLaVukW\">\u6a5f\u5236 Redis \u78ba\u4fdd\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\uff08redis \u7684 lock\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u5171\u4eab\u548c\u5354\u8abf\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7576\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u9700\u8981\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u5982\u4f55\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u9396\u7684\u6a5f\u5236\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u7684\u9396\u6a5f\u5236\u53ca\u5176\u5be6\u73fe\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%9f-tQdYLaVukW\">\u4ec0\u9ebc\u662f\u5206\u5e03\u5f0f\u9396\uff1f<\/h2>\n<p>\u5206\u5e03\u5f0f\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u53ef\u4ee5\u8a2a\u554f\u7279\u5b9a\u7684\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002\u5206\u5e03\u5f0f\u9396\u901a\u5e38\u7528\u65bc\u9700\u8981\u5354\u8abf\u7684\u5834\u666f\uff0c\u4f8b\u5982\u5728\u5fae\u670d\u52d9\u67b6\u69cb\u4e2d\uff0c\u7576\u591a\u500b\u670d\u52d9\u9700\u8981\u8a2a\u554f\u540c\u4e00\u6578\u64da\u5eab\u6216\u6587\u4ef6\u6642\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e9%8e%96%e6%a9%9f%e5%88%b6-tQdYLaVukW\">Redis \u7684\u9396\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u9ad8\u6548\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u5229\u7528 Redis \u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u904e\u7a0b\u4e0d\u6703\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002\u4ee5\u4e0b\u662f Redis \u9396\u7684\u57fa\u672c\u5be6\u73fe\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%8d%b2%e5%8f%96%e9%8e%96-tQdYLaVukW\">1. \u7372\u53d6\u9396<\/h3>\n<p>\u8981\u7372\u53d6\u9396\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u5411 Redis \u767c\u9001\u4e00\u500b SET \u547d\u4ee4\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5373\u4f7f\u5ba2\u6236\u7aef\u5728\u7372\u53d6\u9396\u5f8c\u5d29\u6f70\uff0c\u9396\u4e5f\u4e0d\u6703\u6c38\u4e45\u4f54\u7528\u3002\u4ee5\u4e0b\u662f\u7372\u53d6\u9396\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>SET lock_key unique_lock_value NX PX 30000<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>lock_key<\/code> \u662f\u9396\u7684\u540d\u7a31\uff0c<code>unique_lock_value<\/code> \u662f\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\uff0c<code>NX<\/code> \u8868\u793a\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u8a2d\u7f6e\uff0c<code>PX 30000<\/code> \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u70ba 30 \u79d2\u3002<\/p>\n<h3 id=\"2-%e9%87%8b%e6%94%be%e9%8e%96-tQdYLaVukW\">2. \u91cb\u653e\u9396<\/h3>\n<p>\u91cb\u653e\u9396\u7684\u904e\u7a0b\u540c\u6a23\u9700\u8981\u78ba\u4fdd\u5b89\u5168\u6027\u3002\u5ba2\u6236\u7aef\u5728\u91cb\u653e\u9396\u6642\uff0c\u5fc5\u9808\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\u662f\u5426\u662f\u81ea\u5df1\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u5176\u4ed6\u9032\u7a0b\u7684\u9396\u3002\u4ee5\u4e0b\u662f\u91cb\u653e\u9396\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>if (GET lock_key == unique_lock_value) {\n    DEL lock_key;\n}<\/code><\/pre>\n<h3 id=\"3-%e9%8e%96%e7%9a%84%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6-tQdYLaVukW\">3. \u9396\u7684\u91cd\u8a66\u6a5f\u5236<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u7372\u53d6\u9396\u53ef\u80fd\u6703\u5931\u6557\uff0c\u9019\u6642\u53ef\u4ee5\u8a2d\u7f6e\u91cd\u8a66\u6a5f\u5236\u3002\u5ba2\u6236\u7aef\u53ef\u4ee5\u5728\u7372\u53d6\u9396\u5931\u6557\u5f8c\uff0c\u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\uff0c\u76f4\u5230\u6210\u529f\u7372\u53d6\u9396\u6216\u9054\u5230\u6700\u5927\u91cd\u8a66\u6b21\u6578\u3002\u4ee5\u4e0b\u662f\u91cd\u8a66\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>while (retries &lt; max_retries) {\n    if (SET lock_key unique_lock_value NX PX 30000) {\n        break;\n    }\n    retries++;\n    sleep(wait_time);\n}<\/code><\/pre>\n<h2 id=\"redis-%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-tQdYLaVukW\">Redis \u9396\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-tQdYLaVukW\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u9ad8\u6548\uff1aRedis \u7684\u539f\u5b50\u64cd\u4f5c\u78ba\u4fdd\u4e86\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u904e\u7a0b\u5feb\u901f\u4e14\u7121\u7af6\u722d\u3002<\/li>\n<li>\u7c21\u55ae\uff1a\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u4ee3\u78bc\u7c21\u55ae\u6613\u61c2\uff0c\u6613\u65bc\u7dad\u8b77\u3002<\/li>\n<li>\u53ef\u64f4\u5c55\uff1aRedis \u53ef\u4ee5\u8f15\u9b06\u64f4\u5c55\uff0c\u9069\u5408\u5927\u898f\u6a21\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-tQdYLaVukW\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u904e\u671f\u554f\u984c\uff1a\u5982\u679c\u9396\u7684\u6301\u6709\u8005\u5728\u9396\u904e\u671f\u524d\u672a\u91cb\u653e\u9396\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5176\u4ed6\u9032\u7a0b\u7121\u6cd5\u7372\u53d6\u9396\u3002<\/li>\n<li>\u55ae\u9ede\u6545\u969c\uff1a\u5982\u679c Redis \u670d\u52d9\u5668\u51fa\u73fe\u6545\u969c\uff0c\u6240\u6709\u4f9d\u8cf4\u65bc\u8a72\u9396\u7684\u9032\u7a0b\u5c07\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tQdYLaVukW\">\u7e3d\u7d50<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u65b9\u5f0f\uff0c\u901a\u904e\u539f\u5b50\u64cd\u4f5c\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u904e\u7a0b\u4e0d\u6703\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002\u96d6\u7136 Redis \u9396\u6709\u5176\u512a\u7f3a\u9ede\uff0c\u4f46\u5728\u8a31\u591a\u5834\u666f\u4e2d\uff0c\u5b83\u4ecd\u7136\u662f\u4e00\u500b\u7406\u60f3\u7684\u9078\u64c7\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u5354\u8abf\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\uff0c\u4f7f\u7528 Redis \u9396\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u8cc7\u6e90\u7af6\u722d\u554f\u984c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/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\u6548\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u9084\u662f\u9748\u6d3b\u7684 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528 Redis \u5be6\u73fe\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u7cfb\u7d71\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-161157","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161157","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=161157"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161157\/revisions"}],"predecessor-version":[{"id":161158,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161157\/revisions\/161158"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}