{"id":168985,"date":"2024-11-06T17:54:20","date_gmt":"2024-11-06T09:54:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168985\/"},"modified":"2024-11-06T17:54:21","modified_gmt":"2024-11-06T09:54:21","slug":"%e9%9d%a2%e8%a9%a6%e5%ae%98%ef%bc%9a%e5%a6%82%e4%bd%95%e7%94%a8-redis-%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168985\/","title":{"rendered":"\u9762\u8a66\u5b98\uff1a\u5982\u4f55\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\uff1f"},"content":{"rendered":"<h1 id=\"%e9%9d%a2%e8%a9%a6%e5%ae%98%ef%bc%9a%e5%a6%82%e4%bd%95%e7%94%a8-redis-%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%9f-evIqoqRAPe\">\u9762\u8a66\u5b98\uff1a\u5982\u4f55\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u548c\u5354\u8abf\u662f\u975e\u5e38\u91cd\u8981\u7684\u554f\u984c\u3002\u7576\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u9700\u8981\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u5982\u4f55\u78ba\u4fdd\u9019\u4e9b\u64cd\u4f5c\u7684\u5b89\u5168\u6027\u548c\u4e00\u81f4\u6027\u6210\u70ba\u4e86\u958b\u767c\u8005\u9700\u8981\u89e3\u6c7a\u7684\u6311\u6230\u4e4b\u4e00\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u6709\u6548\u65b9\u6cd5\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\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-evIqoqRAPe\">\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\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u5167\uff0c\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u53ef\u4ee5\u8a2a\u554f\u7279\u5b9a\u7684\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002\u5206\u5e03\u5f0f\u9396\u901a\u5e38\u7528\u65bc\u9700\u8981\u5354\u8abf\u7684\u5834\u666f\uff0c\u4f8b\u5982\u5728\u591a\u500b\u5be6\u4f8b\u4e4b\u9593\u57f7\u884c\u4efb\u52d9\u3001\u66f4\u65b0\u6578\u64da\u5eab\u8a18\u9304\u7b49\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87-redis%ef%bc%9f-evIqoqRAPe\">\u70ba\u4ec0\u9ebc\u9078\u64c7 Redis\uff1f<\/h2>\n<p>Redis \u662f\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u512a\u52e2\uff0c\u4f7f\u5176\u6210\u70ba\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u7406\u60f3\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis \u7684\u64cd\u4f5c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u5728\u6beb\u79d2\u7d1a\u5225\u5167\u5b8c\u6210\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>Redis \u63d0\u4f9b\u7684\u547d\u4ee4\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u904e\u7a0b\u4e2d\u4e0d\u6703\u88ab\u5176\u4ed6\u64cd\u4f5c\u6253\u65b7\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis \u7684 API \u7c21\u55ae\u660e\u77ad\uff0c\u6613\u65bc\u96c6\u6210\u5230\u5404\u7a2e\u61c9\u7528\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-redis-%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96-evIqoqRAPe\">\u5982\u4f55\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396<\/h2>\n<p>\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u601d\u8def\u662f\u4f7f\u7528 Redis \u7684 SETNX \u547d\u4ee4\u3002SETNX \u547d\u4ee4\u7684\u5168\u540d\u662f &#8220;SET if Not eXists&#8221;\uff0c\u5b83\u6703\u5728\u9375\u4e0d\u5b58\u5728\u6642\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\u4e00\u7279\u6027\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-evIqoqRAPe\">\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528 SETNX \u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9396\u9375\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u57f7\u884c\u81e8\u754c\u5340\u4ee3\u78bc\uff1a\u5728\u7372\u53d6\u9396\u5f8c\uff0c\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u4ee3\u78bc\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u522a\u9664\u9396\u9375\u4ee5\u91cb\u653e\u9396\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-evIqoqRAPe\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\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        # \u5617\u8a66\u7372\u53d6\u9396\n        result = self.redis_client.set(self.lock_name, \"locked\", nx=True, ex=self.expire)\n        return result\n\n    def release(self):\n        # \u91cb\u653e\u9396\n        self.redis_client.delete(self.lock_name)\n\n# \u4f7f\u7528\u793a\u4f8b\nredis_client = redis.StrictRedis(host='localhost', port=6379, db=0)\nlock = RedisLock(redis_client, \"my_lock\")\n\nif lock.acquire():\n    try:\n        # \u57f7\u884c\u81e8\u754c\u5340\u4ee3\u78bc\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u4efb\u52d9...\")\n        time.sleep(5)  # \u6a21\u64ec\u4efb\u52d9\u57f7\u884c\n    finally:\n        lock.release()\n        print(\"\u91cb\u653e\u9396\u6210\u529f\")\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-evIqoqRAPe\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u61c9\u6839\u64da\u696d\u52d9\u9700\u6c42\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li><strong>\u9396\u7684\u552f\u4e00\u6027\uff1a<\/strong>\u78ba\u4fdd\u9396\u7684\u540d\u7a31\u5728\u6574\u500b\u7cfb\u7d71\u4e2d\u662f\u552f\u4e00\u7684\uff0c\u4ee5\u907f\u514d\u4e0d\u540c\u696d\u52d9\u4e4b\u9593\u7684\u9396\u885d\u7a81\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u7372\u53d6\u9396\u6216\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8003\u616e\u5230\u53ef\u80fd\u7684\u7570\u5e38\u60c5\u6cc1\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u932f\u8aa4\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-evIqoqRAPe\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u65b9\u6cd5\uff0c\u80fd\u5920\u6709\u6548\u5730\u89e3\u6c7a\u591a\u9032\u7a0b\u6216\u591a\u670d\u52d9\u4e4b\u9593\u7684\u8cc7\u6e90\u7af6\u722d\u554f\u984c\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u548c\u552f\u4e00\u6027\uff0c\u53ef\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Redis \u5be6\u73fe\u5206\u5e03\u5f0f\u9396\uff0c\u78ba\u4fdd\u591a\u500b\u9032\u7a0b\u5b89\u5168\u5730\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\uff0c\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e00\u81f4\u6027\u554f\u984c\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-168985","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168985","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=168985"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168985\/revisions"}],"predecessor-version":[{"id":168986,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168985\/revisions\/168986"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}