{"id":185064,"date":"2024-11-10T18:26:21","date_gmt":"2024-11-10T10:26:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/185064\/"},"modified":"2024-11-10T18:26:22","modified_gmt":"2024-11-10T10:26:22","slug":"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e6%8e%a7%e5%88%b6%e4%ba%8b%e5%8b%99%e5%ae%89%e5%85%a8%e6%80%a7%ef%bc%88redis%e9%8e%96%e4%ba%8b%e5%8b%99%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/185064\/","title":{"rendered":"\u4f7f\u7528Redis\u9396\u63a7\u5236\u4e8b\u52d9\u5b89\u5168\u6027\uff08redis\u9396\u4e8b\u52d9\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e6%8e%a7%e5%88%b6%e4%ba%8b%e5%8b%99%e5%ae%89%e5%85%a8%e6%80%a7%ef%bc%88redis%e9%8e%96%e4%ba%8b%e5%8b%99%ef%bc%89-iGIKXkDtFc\">\u4f7f\u7528Redis\u9396\u63a7\u5236\u4e8b\u52d9\u5b89\u5168\u6027\uff08redis\u9396\u4e8b\u52d9\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e8b\u52d9\u5b89\u5168\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u64f4\u5c55\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u4e26\u767c\u8acb\u6c42\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\u591a\u7a2e\u6a5f\u5236\u4f86\u63a7\u5236\u4e8b\u52d9\u7684\u5b89\u5168\u6027\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u4f7f\u7528\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u9396\u4f86\u63a7\u5236\u4e8b\u52d9\u5b89\u5168\u6027\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-iGIKXkDtFc\">\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u7684\u6a5f\u5236\uff0c\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u5167\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u53ef\u4ee5\u8a2a\u554f\u8a72\u8cc7\u6e90\u3002\u9019\u5c0d\u65bc\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4fdd\u6301\u6578\u64da\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002Redis\u9396\u901a\u5e38\u662f\u57fa\u65bcSETNX\u547d\u4ee4\u5be6\u73fe\u7684\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%af%a6%e7%8f%be-iGIKXkDtFc\">Redis\u9396\u7684\u57fa\u672c\u5be6\u73fe<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Redis\u9396\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\nimport time\n\nclass RedisLock:\n    def __init__(self, redis_client, lock_name, expire=10):\n        self.redis_client = redis_client\n        self.lock_name = lock_name\n        self.expire = expire\n\n    def acquire(self):\n        while True:\n            if self.redis_client.set(self.lock_name, \"locked\", nx=True, ex=self.expire):\n                return True\n            time.sleep(0.1)\n\n    def release(self):\n        self.redis_client.delete(self.lock_name)\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70baRedisLock\u7684\u985e\uff0c\u8a72\u985e\u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\u4f86\u7372\u53d6\u9396\u3002\u5982\u679c\u9396\u5df2\u7d93\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\uff0c\u5247\u6703\u6bcf0.1\u79d2\u91cd\u8a66\u4e00\u6b21\uff0c\u76f4\u5230\u6210\u529f\u7372\u53d6\u9396\u3002\u7576\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u53ef\u4ee5\u8abf\u7528release\u65b9\u6cd5\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-iGIKXkDtFc\">\u4f7f\u7528Redis\u9396\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002\u5982\u679c\u4e00\u500b\u9032\u7a0b\u5728\u7372\u53d6\u9396\u5f8c\u5d29\u6f70\uff0c\u9396\u5c07\u5728\u904e\u671f\u5f8c\u81ea\u52d5\u91cb\u653e\u3002<\/li>\n<li><strong>\u9396\u7684\u552f\u4e00\u6027\uff1a<\/strong>\u78ba\u4fdd\u9396\u7684\u540d\u7a31\u662f\u552f\u4e00\u7684\uff0c\u4ee5\u907f\u514d\u4e0d\u540c\u64cd\u4f5c\u4e4b\u9593\u7684\u5e72\u64fe\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\u7684\u5b89\u5168\u6027\uff1a<\/strong>\u5728\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8a72\u78ba\u8a8d\u7576\u524d\u9032\u7a0b\u662f\u9396\u7684\u64c1\u6709\u8005\uff0c\u4ee5\u9632\u6b62\u5176\u4ed6\u9032\u7a0b\u610f\u5916\u91cb\u653e\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e9%80%b2%e9%9a%8e%e7%94%a8%e6%b3%95-iGIKXkDtFc\">Redis\u9396\u7684\u9032\u968e\u7528\u6cd5<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u9396\u5be6\u73fe\uff0cRedis\u9084\u652f\u6301\u4e00\u4e9b\u9032\u968e\u7684\u9396\u6a5f\u5236\uff0c\u4f8b\u5982Redlock\u7b97\u6cd5\u3002Redlock\u662f\u4e00\u7a2e\u5206\u4f48\u5f0f\u9396\u7b97\u6cd5\uff0c\u65e8\u5728\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u548c\u53ef\u7528\u6027\u3002\u5b83\u7684\u57fa\u672c\u601d\u60f3\u662f\u4f7f\u7528\u591a\u500bRedis\u5be6\u4f8b\u4f86\u7372\u53d6\u9396\uff0c\u5f9e\u800c\u6e1b\u5c11\u55ae\u9ede\u6545\u969c\u7684\u98a8\u96aa\u3002<\/p>\n<p>Redlock\u7684\u5be6\u73fe\u904e\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u5728N\u500bRedis\u5be6\u4f8b\u4e2d\u7372\u53d6\u9396\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u5927\u591a\u6578\u5be6\u4f8b\u4e2d\u6210\u529f\u7372\u53d6\u9396\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u5b8c\u8cc7\u6e90\u5f8c\u91cb\u653e\u9396\u3002<\/li>\n<\/ol>\n<h2 id=\"%e7%b5%90%e8%ab%96-iGIKXkDtFc\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u9396\u4f86\u63a7\u5236\u4e8b\u52d9\u5b89\u5168\u6027\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u7684\u74b0\u5883\u4e2d\u3002\u901a\u904e\u6b63\u78ba\u5730\u5be6\u73fe\u548c\u7ba1\u7406\u9396\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u57fa\u672c\u7684\u9396\u5be6\u73fe\u9084\u662f\u9032\u968e\u7684Redlock\u7b97\u6cd5\uff0cRedis\u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u5de5\u5177\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5b89\u5168\u548c\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Redis\u9396\u4f86\u589e\u5f37\u4e8b\u52d9\u5b89\u5168\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u4e26\u767c\u63a7\u5236\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\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-185064","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185064","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=185064"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185064\/revisions"}],"predecessor-version":[{"id":185065,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185064\/revisions\/185065"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=185064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=185064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=185064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}