{"id":107824,"date":"2024-10-23T19:09:15","date_gmt":"2024-10-23T11:09:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/107824\/"},"modified":"2024-10-23T19:09:15","modified_gmt":"2024-10-23T11:09:15","slug":"redis-%e4%ba%92%e6%96%a5%e9%8e%96%e9%8e%96%e5%ae%9a%e6%95%b8%e6%93%9a%e4%b8%a6%e4%bf%9d%e6%8c%81%e5%8e%9f%e5%ad%90%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/107824\/","title":{"rendered":"Redis \u4e92\u65a5\u9396\u9396\u5b9a\u6578\u64da\u4e26\u4fdd\u6301\u539f\u5b50\u6027"},"content":{"rendered":"<h1 id=\"redis-%e4%ba%92%e6%96%a5%e9%8e%96%e9%8e%96%e5%ae%9a%e6%95%b8%e6%93%9a%e4%b8%a6%e4%bf%9d%e6%8c%81%e5%8e%9f%e5%ad%90%e6%80%a7-CTbOjwfzEX\">Redis \u4e92\u65a5\u9396\u9396\u5b9a\u6578\u64da\u4e26\u4fdd\u6301\u539f\u5b50\u6027<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u4e00\u81f4\u6027\u3002\u5176\u4e2d\uff0c\u4e92\u65a5\u9396\uff08Mutex\uff09\u662f\u4e00\u7a2e\u5e38\u7528\u7684\u6280\u8853\uff0c\u7528\u65bc\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\uff0c\u5f9e\u800c\u4fdd\u6301\u6578\u64da\u7684\u539f\u5b50\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u4e92\u65a5\u9396\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u539f\u5b50\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%ba%92%e6%96%a5%e9%8e%96%ef%bc%9f-CTbOjwfzEX\">\u4ec0\u9ebc\u662f\u4e92\u65a5\u9396\uff1f<\/h2>\n<p>\u4e92\u65a5\u9396\u662f\u4e00\u7a2e\u540c\u6b65\u539f\u8a9e\uff0c\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u9032\u7a0b\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u9032\u7a0b\u91cb\u653e\u9396\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u767c\u751f\u3002\u5728 Redis \u4e2d\uff0c\u4e92\u65a5\u9396\u7684\u5be6\u73fe\u901a\u5e38\u4f9d\u8cf4\u65bc\u9375\u7684\u8a2d\u7f6e\u548c\u904e\u671f\u6642\u9593\u7684\u7ba1\u7406\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84%e4%ba%92%e6%96%a5%e9%8e%96%e5%af%a6%e7%8f%be-CTbOjwfzEX\">Redis \u4e2d\u7684\u4e92\u65a5\u9396\u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u4e2d\u5be6\u73fe\u4e92\u65a5\u9396\u7684\u57fa\u672c\u601d\u8def\u662f\u4f7f\u7528 <code>SETNX<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u7684\u5168\u540d\u662f &#8220;SET if Not eXists&#8221;\uff0c\u5b83\u6703\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u4e26\u8fd4\u56de 1\uff1b\u5982\u679c\u9375\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u8fd4\u56de 0\u3002\u9019\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%e7%9a%84%e4%ba%92%e6%96%a5%e9%8e%96%e5%af%a6%e7%8f%be-CTbOjwfzEX\">\u57fa\u672c\u7684\u4e92\u65a5\u9396\u5be6\u73fe<\/h3>\n<pre><code>\n# \u7372\u53d6\u9396\nSETNX lock_key unique_lock_value\nEXPIRE lock_key 10  # \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5617\u8a66\u7372\u53d6\u9396\u3002\u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u6211\u5011\u9084\u8a2d\u7f6e\u4e86\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u7372\u5f97\u9396\u7684\u60c5\u6cc1\u4e0b\u5b89\u5168\u5730\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u3002<\/p>\n<h3 id=\"%e9%87%8b%e6%94%be%e9%8e%96-CTbOjwfzEX\">\u91cb\u653e\u9396<\/h3>\n<p>\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e5f\u975e\u5e38\u91cd\u8981\u3002\u70ba\u4e86\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u9032\u7a0b\u80fd\u5920\u91cb\u653e\u9396\uff0c\u6211\u5011\u9700\u8981\u6aa2\u67e5\u9396\u7684\u503c\u662f\u5426\u8207\u6211\u5011\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u76f8\u540c\u3002<\/p>\n<pre><code>\n# \u91cb\u653e\u9396\nif (GET lock_key == unique_lock_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redlock-%e5%af%a6%e7%8f%be%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96-CTbOjwfzEX\">\u4f7f\u7528 Redlock \u5be6\u73fe\u5206\u4f48\u5f0f\u9396<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u55ae\u4e00 Redis \u5be6\u4f8b\u7684\u9396\u53ef\u80fd\u4e0d\u5920\u5b89\u5168\u3002\u6b64\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 Redlock \u7b97\u6cd5\u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u3002Redlock \u662f\u7531 Redis \u7684\u5275\u59cb\u4eba Antirez \u63d0\u51fa\u7684\uff0c\u65e8\u5728\u89e3\u6c7a\u591a\u500b Redis \u5be6\u4f8b\u4e4b\u9593\u7684\u9396\u554f\u984c\u3002<\/p>\n<h3 id=\"redlock-%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-CTbOjwfzEX\">Redlock \u7684\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ul>\n<li>\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e0a\u7372\u53d6\u9396\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u5927\u591a\u6578\u5be6\u4f8b\u4e0a\u6210\u529f\u7372\u53d6\u9396\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u5b8c\u8cc7\u6e90\u5f8c\u91cb\u653e\u9396\u3002<\/li>\n<\/ul>\n<p>\u9019\u6a23\uff0c\u5373\u4f7f\u67d0\u500b Redis \u5be6\u4f8b\u5931\u6548\uff0c\u5176\u4ed6\u5be6\u4f8b\u4ecd\u7136\u53ef\u4ee5\u4fdd\u6301\u9396\u7684\u6709\u6548\u6027\uff0c\u5f9e\u800c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-CTbOjwfzEX\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Redis \u4e2d\u5be6\u73fe\u4e92\u65a5\u9396\u662f\u4e00\u500b\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u539f\u5b50\u6027\u548c\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u57fa\u672c\u7684 <code>SETNX<\/code> \u547d\u4ee4\uff0c\u9084\u662f\u63a1\u7528 Redlock \u7b97\u6cd5\u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\uff0c\u9019\u4e9b\u6280\u8853\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728\u591a\u9032\u7a0b\u6216\u591a\u5be6\u4f8b\u74b0\u5883\u4e2d\u5b89\u5168\u5730\u7ba1\u7406\u5171\u4eab\u8cc7\u6e90\u3002<\/p>\n<p>\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u4e92\u65a5\u9396\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u66f4\u597d\u5730\u8a2d\u8a08\u548c\u5be6\u73fe\u7a69\u5b9a\u7684\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Redis \u4e92\u65a5\u9396\u4f86\u9396\u5b9a\u6578\u64da\uff0c\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\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-107824","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107824","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=107824"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107824\/revisions"}],"predecessor-version":[{"id":107825,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107824\/revisions\/107825"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=107824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=107824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=107824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}