{"id":98950,"date":"2024-10-21T06:53:14","date_gmt":"2024-10-20T22:53:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98950\/"},"modified":"2024-10-21T06:53:15","modified_gmt":"2024-10-20T22:53:15","slug":"redis-%e8%ae%80%e5%af%ab%e5%af%a6%e7%8f%be%e5%8f%af%e9%9d%a0%e5%8a%a0%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98950\/","title":{"rendered":"Redis \u8b80\u5beb\u5be6\u73fe\u53ef\u9760\u52a0\u9396"},"content":{"rendered":"<h1 id=\"redis-%e8%ae%80%e5%af%ab%e5%af%a6%e7%8f%be%e5%8f%af%e9%9d%a0%e5%8a%a0%e9%8e%96-tqfJZZphJl\">Redis \u8b80\u5beb\u5be6\u73fe\u53ef\u9760\u52a0\u9396<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u53ef\u9760\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\u5be6\u73fe\u6578\u64da\u7684\u53ef\u9760\u8b80\u5beb\uff0c\u5176\u4e2d\u52a0\u9396\u6a5f\u5236\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u53ef\u9760\u7684\u52a0\u9396\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%8a%a0%e9%8e%96-tqfJZZphJl\">\u70ba\u4ec0\u9ebc\u9700\u8981\u52a0\u9396<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\uff0c\u7576\u591a\u500b\u5be6\u4f8b\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u52a0\u9396\u53ef\u4ee5\u9632\u6b62\u540c\u6642\u8a2a\u554f\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u52a0\u9396\u7b56\u7565\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662f\u57fa\u65bc\u9375\u7684\u9396\u5b9a\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%8a%a0%e9%8e%96%e6%a9%9f%e5%88%b6-tqfJZZphJl\">Redis \u7684\u52a0\u9396\u6a5f\u5236<\/h2>\n<p>Redis \u7684\u52a0\u9396\u6a5f\u5236\u4e3b\u8981\u4f9d\u8cf4\u65bc SETNX \u547d\u4ee4\u3002SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u53ef\u4ee5\u5728\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u9019\u4f7f\u5f97\u5b83\u6210\u70ba\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e5%8a%a0%e9%8e%96%e5%af%a6%e7%8f%be-tqfJZZphJl\">\u57fa\u672c\u7684\u52a0\u9396\u5be6\u73fe<\/h3>\n<pre><code>\nSETNX lock_key unique_lock_value\nEXPIRE lock_key 30\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u9996\u5148\u4f7f\u7528 SETNX \u5617\u8a66\u8a2d\u7f6e\u4e00\u500b\u9396\u9375\uff08lock_key\uff09\u3002\u5982\u679c\u8a2d\u7f6e\u6210\u529f\uff0c\u5247\u8868\u793a\u7372\u5f97\u9396\uff0c\u63a5\u8457\u4f7f\u7528 EXPIRE \u547d\u4ee4\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h3 id=\"%e8%a7%a3%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-tqfJZZphJl\">\u89e3\u9396\u7684\u5be6\u73fe<\/h3>\n<p>\u89e3\u9396\u7684\u904e\u7a0b\u9700\u8981\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u5be6\u4f8b\u624d\u80fd\u89e3\u9396\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u503c\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>\nif (GET lock_key == unique_lock_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u9996\u5148\u6aa2\u67e5\u7576\u524d\u9396\u7684\u503c\u662f\u5426\u8207\u6301\u6709\u9396\u7684\u5be6\u4f8b\u7684\u552f\u4e00\u6a19\u8b58\uff08unique_lock_value\uff09\u76f8\u540c\uff0c\u53ea\u6709\u76f8\u540c\u6642\u624d\u6703\u522a\u9664\u9396\u9375\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redisson-%e5%af%a6%e7%8f%be%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96-tqfJZZphJl\">\u4f7f\u7528 Redisson \u5be6\u73fe\u5206\u4f48\u5f0f\u9396<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u52a0\u9396\u5be6\u73fe\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528 Redisson \u9019\u500b Redis \u5ba2\u6236\u7aef\u5eab\u4f86\u7c21\u5316\u5206\u4f48\u5f0f\u9396\u7684\u5be6\u73fe\u3002Redisson \u63d0\u4f9b\u4e86\u9ad8\u7d1a API\uff0c\u4f7f\u5f97\u52a0\u9396\u548c\u89e3\u9396\u7684\u904e\u7a0b\u66f4\u52a0\u7c21\u55ae\u3002<\/p>\n<pre><code>\nRLock lock = redisson.getLock(\"lock_key\");\nlock.lock();\ntry {\n    \/\/ \u57f7\u884c\u9700\u8981\u52a0\u9396\u7684\u64cd\u4f5c\n} finally {\n    lock.unlock();\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0cRedisson \u63d0\u4f9b\u7684 RLock \u5c0d\u8c61\u53ef\u4ee5\u81ea\u52d5\u8655\u7406\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\uff0c\u4e26\u4e14\u652f\u6301\u9396\u7684\u81ea\u52d5\u904e\u671f\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u958b\u767c\u8005\u7684\u8ca0\u64d4\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-tqfJZZphJl\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u9396\u7684\u904e\u671f\u6642\u9593\u8db3\u5920\u9577\uff0c\u4ee5\u9632\u6b62\u5728\u9577\u6642\u9593\u64cd\u4f5c\u4e2d\u9396\u88ab\u81ea\u52d5\u91cb\u653e\u3002<\/li>\n<li>\u907f\u514d\u6b7b\u9396\uff0c\u61c9\u8a72\u8a2d\u8a08\u5408\u7406\u7684\u9396\u7372\u53d6\u548c\u91cb\u653e\u908f\u8f2f\u3002<\/li>\n<li>\u5728\u9ad8\u4f75\u767c\u5834\u666f\u4e0b\uff0c\u8003\u616e\u4f7f\u7528 Redisson \u7b49\u5eab\u4f86\u7c21\u5316\u9396\u7684\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tqfJZZphJl\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u53ef\u9760\u7684\u52a0\u9396\u6a5f\u5236\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u52a0\u9396\u65b9\u6cd5\uff0c\u5305\u62ec\u57fa\u672c\u7684 SETNX \u548c\u9ad8\u7d1a\u7684 Redisson \u5eab\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u611f\u8208\u8da3\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\uff0c\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7684\u8b80\u5beb\u5be6\u73fe\u8207\u53ef\u9760\u52a0\u9396\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\u7cfb\u7d71\u6027\u80fd\uff0c\u78ba\u4fdd\u9ad8\u6548\u80fd\u7684\u6578\u64da\u8655\u7406\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-98950","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98950","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=98950"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98950\/revisions"}],"predecessor-version":[{"id":98951,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98950\/revisions\/98951"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}