{"id":99196,"date":"2024-10-21T08:56:16","date_gmt":"2024-10-21T00:56:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/99196\/"},"modified":"2024-10-21T08:56:16","modified_gmt":"2024-10-21T00:56:16","slug":"redis-%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%91%bd%e4%bb%a4%e5%af%a6%e7%8f%be%e9%9b%86%e7%be%a4%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/99196\/","title":{"rendered":"Redis \u5206\u5e03\u5f0f\u9396\u547d\u4ee4\u5be6\u73fe\u96c6\u7fa4\u6578\u64da\u5b89\u5168"},"content":{"rendered":"<h1 id=\"redis-%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%91%bd%e4%bb%a4%e5%af%a6%e7%8f%be%e9%9b%86%e7%be%a4%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8-zUipPVCVvn\">Redis \u5206\u5e03\u5f0f\u9396\u547d\u4ee4\u5be6\u73fe\u96c6\u7fa4\u6578\u64da\u5b89\u5168<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b89\u5168\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\u529f\u80fd\u4f86\u652f\u6301\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Redis \u7684\u5206\u5e03\u5f0f\u9396\u547d\u4ee4\u4f86\u78ba\u4fdd\u96c6\u7fa4\u4e2d\u7684\u6578\u64da\u5b89\u5168\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-zUipPVCVvn\">\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\u4e4b\u9593\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7576\u591a\u500b\u5be6\u4f8b\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u640d\u58de\u3002\u5206\u5e03\u5f0f\u9396\u7684\u76ee\u7684\u662f\u78ba\u4fdd\u5728\u4efb\u4f55\u6642\u523b\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u53ef\u4ee5\u8a2a\u554f\u8a72\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%af%a6%e7%8f%be-zUipPVCVvn\">Redis \u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%8d%b2%e5%8f%96%e9%8e%96-zUipPVCVvn\">1. \u7372\u53d6\u9396<\/h3>\n<p>\u8981\u7372\u53d6\u9396\uff0c\u53ef\u4ee5\u4f7f\u7528 Redis \u7684 <code>SETNX<\/code> \u547d\u4ee4\u3002\u9019\u500b\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\u4ee5\u4e0b\u662f\u7372\u53d6\u9396\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/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\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\u3002<\/p>\n<h3 id=\"2-%e8%a8%ad%e7%bd%ae%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-zUipPVCVvn\">2. \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u70ba\u9396\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002\u53ef\u4ee5\u4f7f\u7528 <code>EXPIRE<\/code> \u547d\u4ee4\u4f86\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>EXPIRE lock_key 30\n<\/code><\/pre>\n<p>\u9019\u88e1\u7684 30 \u8868\u793a\u9396\u7684\u6709\u6548\u6642\u9593\u70ba 30 \u79d2\u3002<\/p>\n<h3 id=\"3-%e9%87%8b%e6%94%be%e9%8e%96-zUipPVCVvn\">3. \u91cb\u653e\u9396<\/h3>\n<p>\u91cb\u653e\u9396\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u53ea\u6709\u9396\u7684\u64c1\u6709\u8005\u624d\u80fd\u91cb\u653e\u9396\u3002\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u503c\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>if (GET lock_key == unique_lock_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redisson-%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96-zUipPVCVvn\">\u4f7f\u7528 Redisson \u5be6\u73fe\u5206\u5e03\u5f0f\u9396<\/h2>\n<p>\u9664\u4e86\u76f4\u63a5\u4f7f\u7528 Redis \u547d\u4ee4\u5916\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528 Redisson \u9019\u500b Java \u5ba2\u6236\u7aef\u4f86\u7c21\u5316\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\u3002Redisson \u63d0\u4f9b\u4e86\u9ad8\u7d1a API\uff0c\u4f7f\u5f97\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u8b8a\u5f97\u66f4\u52a0\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 Redisson \u7372\u53d6\u9396\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>RLock lock = redisson.getLock(\"lock_key\");\nlock.lock();\ntry {\n    \/\/ \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n} finally {\n    lock.unlock();\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-zUipPVCVvn\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\uff1a\u4f7f\u7528\u552f\u4e00\u7684\u6a19\u8b58\u7b26\u4f86\u6a19\u8b58\u9396\u7684\u64c1\u6709\u8005\u3002<\/li>\n<li>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff1a\u6839\u64da\u696d\u52d9\u9700\u6c42\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li>\u8655\u7406\u7570\u5e38\u60c5\u6cc1\uff1a\u5728\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8a72\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zUipPVCVvn\">\u7e3d\u7d50<\/h2>\n<p>Redis \u7684\u5206\u5e03\u5f0f\u9396\u547d\u4ee4\u70ba\u5be6\u73fe\u96c6\u7fa4\u6578\u64da\u5b89\u5168\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528 <code>SETNX<\/code>\u3001<code>EXPIRE<\/code> \u548c <code>DEL<\/code> \u547d\u4ee4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\uff0c\u5f9e\u800c\u4fdd\u8b77\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u6578\u64da\u5b89\u5168\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u660e\u667a\u4e4b\u8209\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis \u5206\u5e03\u5f0f\u9396\u547d\u4ee4\u78ba\u4fdd\u96c6\u7fa4\u6578\u64da\u5b89\u5168\uff0c\u9632\u6b62\u6578\u64da\u7af6\u722d\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u53ef\u9760\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-99196","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99196","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=99196"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99196\/revisions"}],"predecessor-version":[{"id":99197,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99196\/revisions\/99197"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=99196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=99196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=99196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}