{"id":188224,"date":"2024-11-11T20:52:20","date_gmt":"2024-11-11T12:52:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188224\/"},"modified":"2024-11-11T20:52:21","modified_gmt":"2024-11-11T12:52:21","slug":"%e9%8e%96redis%e7%ad%86%e8%a8%98%e6%8e%8c%e6%8f%a1%e5%85%a8%e5%b1%80%e9%8e%96%e7%9a%84%e4%b9%8b%e9%81%93%ef%bc%88redis%e7%ad%86%e8%a8%98%e4%b9%8b%e5%85%a8%e5%b1%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188224\/","title":{"rendered":"\u9396Redis\u7b46\u8a18\u638c\u63e1\u5168\u5c40\u9396\u7684\u4e4b\u9053\uff08redis\u7b46\u8a18\u4e4b\u5168\u5c40\uff09"},"content":{"rendered":"<h1 id=\"%e9%8e%96redis%e7%ad%86%e8%a8%98%e6%8e%8c%e6%8f%a1%e5%85%a8%e5%b1%80%e9%8e%96%e7%9a%84%e4%b9%8b%e9%81%93%ef%bc%88redis%e7%ad%86%e8%a8%98%e4%b9%8b%e5%85%a8%e5%b1%80%ef%bc%89-aQuAljKmxF\">\u9396Redis\u7b46\u8a18\u638c\u63e1\u5168\u5c40\u9396\u7684\u4e4b\u9053\uff08redis\u7b46\u8a18\u4e4b\u5168\u5c40\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\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\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u5168\u5c40\u9396\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u4e2d\u7684\u5168\u5c40\u9396\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%85%a8%e5%b1%80%e9%8e%96%ef%bc%9f-aQuAljKmxF\">\u4ec0\u9ebc\u662f\u5168\u5c40\u9396\uff1f<\/h2>\n<p>\u5168\u5c40\u9396\u662f\u4e00\u7a2e\u78ba\u4fdd\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u53ef\u4ee5\u8a2a\u554f\u7279\u5b9a\u8cc7\u6e90\u7684\u6a5f\u5236\u3002\u9019\u5c0d\u65bc\u9700\u8981\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\uff0c\u4f8b\u5982\u5728\u591a\u500b\u670d\u52d9\u5668\u4e0a\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u5168\u5c40\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-aQuAljKmxF\">Redis\u4e2d\u7684\u9396\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u5be6\u73fe\u5168\u5c40\u9396\u7684\u5e38\u898b\u65b9\u6cd5\u662f\u4f7f\u7528SETNX\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\u9396\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e5%85%a8%e5%b1%80%e9%8e%96%e5%af%a6%e7%8f%be-aQuAljKmxF\">\u57fa\u672c\u7684\u5168\u5c40\u9396\u5be6\u73fe<\/h3>\n<pre><code>SETNX lock_key unique_lock_value\nEXPIRE lock_key 30\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c<code>lock_key<\/code>\u662f\u9396\u7684\u540d\u7a31\uff0c\u800c<code>unique_lock_value<\/code>\u662f\u7528\u65bc\u8b58\u5225\u9396\u7684\u552f\u4e00\u503c\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u8a72\u552f\u4e00\u503c\u7684\u5be6\u4f8b\u53ef\u4ee5\u91cb\u653e\u9396\u3002<\/p>\n<h3 id=\"%e9%87%8b%e6%94%be%e9%8e%96-aQuAljKmxF\">\u91cb\u653e\u9396<\/h3>\n<p>\u91cb\u653e\u9396\u7684\u904e\u7a0b\u9700\u8981\u5c0f\u5fc3\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u5176\u4ed6\u5be6\u4f8b\u7684\u9396\u3002\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u503c\u4f86\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u5be6\u4f8b\u624d\u80fd\u91cb\u653e\u5b83\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%a8redisson%e5%af%a6%e7%8f%be%e5%85%a8%e5%b1%80%e9%8e%96-aQuAljKmxF\">\u4f7f\u7528Redisson\u5be6\u73fe\u5168\u5c40\u9396<\/h2>\n<p>Redisson\u662f\u4e00\u500b\u57fa\u65bcRedis\u7684Java\u5ba2\u6236\u7aef\uff0c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7d1a\u7684\u9396\u5be6\u73fe\u3002\u4f7f\u7528Redisson\u53ef\u4ee5\u7c21\u5316\u5168\u5c40\u9396\u7684\u4f7f\u7528\uff0c\u4e26\u63d0\u4f9b\u66f4\u591a\u529f\u80fd\uff0c\u4f8b\u5982\u53ef\u91cd\u5165\u9396\u548c\u516c\u5e73\u9396\u3002<\/p>\n<h3 id=\"redisson%e5%85%a8%e5%b1%80%e9%8e%96%e7%a4%ba%e4%be%8b-aQuAljKmxF\">Redisson\u5168\u5c40\u9396\u793a\u4f8b<\/h3>\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<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0cRedisson\u81ea\u52d5\u8655\u7406\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\uff0c\u4e26\u78ba\u4fdd\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\u91cb\u653e\u9396\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u51fa\u932f\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<h2 id=\"%e5%85%a8%e5%b1%80%e9%8e%96%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-aQuAljKmxF\">\u5168\u5c40\u9396\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u5168\u5c40\u9396\u61c9\u8a72\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u60c5\u6cc1\u7684\u767c\u751f\u3002<\/li>\n<li><strong>\u4f7f\u7528\u552f\u4e00\u6a19\u8b58\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u9396\u90fd\u6709\u552f\u4e00\u7684\u6a19\u8b58\uff0c\u4ee5\u4fbf\u6b63\u78ba\u91cb\u653e\u9396\u3002<\/li>\n<li><strong>\u8003\u616e\u4f7f\u7528Redisson\uff1a<\/strong>\u5982\u679c\u4f7f\u7528Java\uff0c\u8003\u616e\u4f7f\u7528Redisson\u4f86\u7c21\u5316\u9396\u7684\u7ba1\u7406\u3002<\/li>\n<li><strong>\u76e3\u63a7\u9396\u7684\u4f7f\u7528\uff1a<\/strong>\u76e3\u63a7\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u60c5\u6cc1\uff0c\u4ee5\u4fbf\u53ca\u6642\u767c\u73fe\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-aQuAljKmxF\">\u7d50\u8ad6<\/h2>\n<p>\u5168\u5c40\u9396\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u6b63\u78ba\u7684\u5be6\u73fe\u548c\u4f7f\u7528\u5168\u5c40\u9396\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528Redis\u7684\u57fa\u672c\u547d\u4ee4\u9084\u662f\u9ad8\u7d1a\u7684Redisson\u5eab\uff0c\u7406\u89e3\u5168\u5c40\u9396\u7684\u5de5\u4f5c\u539f\u7406\u548c\u6700\u4f73\u5be6\u8e10\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684Redis\u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Redis\u5168\u5c40\u9396\u7684\u6280\u5de7\u8207\u5be6\u8e10\uff0c\u6df1\u5165\u4e86\u89e3\u9396\u7684\u539f\u7406\u8207\u61c9\u7528\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\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-188224","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188224","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=188224"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188224\/revisions"}],"predecessor-version":[{"id":188225,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188224\/revisions\/188225"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}