{"id":129081,"date":"2024-10-26T18:56:22","date_gmt":"2024-10-26T10:56:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129081\/"},"modified":"2024-10-26T18:56:23","modified_gmt":"2024-10-26T10:56:23","slug":"redis%e5%af%a6%e7%8f%be%e9%98%bb%e5%a1%9e%e5%bc%8f%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%88redis%e9%98%bb%e5%a1%9e%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129081\/","title":{"rendered":"Redis\u5be6\u73fe\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\uff08redis\u963b\u585e\u5206\u5e03\u5f0f\u9396\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e9%98%bb%e5%a1%9e%e5%bc%8f%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%88redis%e9%98%bb%e5%a1%9e%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%89-avteeMkxIG\">Redis\u5be6\u73fe\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\uff08redis\u963b\u585e\u5206\u5e03\u5f0f\u9396\uff09<\/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\u70ba\u4e86\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u5206\u5e03\u5f0f\u9396\u6210\u70ba\u4e86\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5be6\u73fe\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\u7684\u80fd\u529b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\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-avteeMkxIG\">\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\u9700\u8981\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u5206\u5e03\u5f0f\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-avteeMkxIG\">Redis\u7684\u512a\u52e2<\/h2>\n<p>Redis\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li>\u9ad8\u6548\u7684\u6027\u80fd\uff1aRedis\u7684\u64cd\u4f5c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u652f\u6301\u9ad8\u4e26\u767c\u7684\u8acb\u6c42\u3002<\/li>\n<li>\u7c21\u55ae\u7684\u6578\u64da\u7d50\u69cb\uff1aRedis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u65b9\u4fbf\u958b\u767c\u8005\u4f7f\u7528\u3002<\/li>\n<li>\u539f\u5b50\u64cd\u4f5c\uff1aRedis\u63d0\u4f9b\u4e86\u591a\u7a2e\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%98%bb%e5%a1%9e%e5%bc%8f%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-avteeMkxIG\">\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u901a\u904eSETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u80fd\u5920\u7372\u5f97\u9396\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-avteeMkxIG\">\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9396\u7684\u9375\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u57f7\u884c\u696d\u52d9\u908f\u8f2f\uff1a\u5728\u7372\u5f97\u9396\u5f8c\uff0c\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u696d\u52d9\u908f\u8f2f\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u522a\u9664\u9396\u7684\u9375\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-avteeMkxIG\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nimport 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\n# \u4f7f\u7528\u793a\u4f8b\nredis_client = redis.StrictRedis(host='localhost', port=6379, db=0)\nlock = RedisLock(redis_client, \"my_lock\")\n\n# \u7372\u53d6\u9396\nlock.acquire()\ntry:\n    # \u57f7\u884c\u696d\u52d9\u908f\u8f2f\n    print(\"\u7372\u5f97\u9396\uff0c\u57f7\u884c\u696d\u52d9\u908f\u8f2f\")\nfinally:\n    # \u91cb\u653e\u9396\n    lock.release()\n    print(\"\u91cb\u653e\u9396\")\n<\/code><\/pre>\n<h2 id=\"%e9%98%bb%e5%a1%9e%e5%bc%8f%e9%8e%96%e7%9a%84%e5%84%aa%e5%8c%96-avteeMkxIG\">\u963b\u585e\u5f0f\u9396\u7684\u512a\u5316<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u963b\u585e\u5f0f\u9396\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002\u70ba\u4e86\u512a\u5316\u9019\u4e00\u9ede\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u96a8\u6a5f\u904e\u671f\u6642\u9593\uff1a\u5728\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u96a8\u6a5f\u503c\u4f86\u6e1b\u5c11\u9396\u7684\u7af6\u722d\u3002<\/li>\n<li>\u4f7f\u7528Redlock\u7b97\u6cd5\uff1a\u9019\u662f\u4e00\u7a2e\u57fa\u65bcRedis\u7684\u5206\u5e03\u5f0f\u9396\u7b97\u6cd5\uff0c\u80fd\u5920\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-avteeMkxIG\">\u7e3d\u7d50<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\u3002\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\u548c\u9069\u7576\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u96a8\u8457\u5206\u5e03\u5f0f\u7cfb\u7d71\u7684\u767c\u5c55\uff0c\u5c0d\u65bc\u9396\u7684\u9700\u6c42\u5c07\u6703\u8d8a\u4f86\u8d8a\u9ad8\uff0c\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u5c07\u5c0d\u958b\u767c\u8005\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u53ca\u5176\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u963b\u585e\u5f0f\u5206\u5e03\u5f0f\u9396\uff0c\u78ba\u4fdd\u591a\u500b\u9032\u7a0b\u5b89\u5168\u5730\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6548\u7387\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-129081","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129081","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=129081"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129081\/revisions"}],"predecessor-version":[{"id":129082,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129081\/revisions\/129082"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}