{"id":166929,"date":"2024-11-05T20:49:20","date_gmt":"2024-11-05T12:49:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166929\/"},"modified":"2024-11-05T20:49:20","modified_gmt":"2024-11-05T12:49:20","slug":"%e7%90%86%e8%a7%a3redis%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%e7%9a%84%e7%b2%be%e9%ab%93%ef%bc%88redis%e9%8e%96%e7%9a%84%e5%8e%9f%e7%90%86%e8%a7%a3%e8%ae%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166929\/","title":{"rendered":"\u7406\u89e3Redis\u5206\u4f48\u5f0f\u9396\u7684\u7cbe\u9ad3\uff08redis\u9396\u7684\u539f\u7406\u89e3\u8b80\uff09"},"content":{"rendered":"<h1 id=\"%e7%90%86%e8%a7%a3redis%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%e7%9a%84%e7%b2%be%e9%ab%93%ef%bc%88redis%e9%8e%96%e7%9a%84%e5%8e%9f%e7%90%86%e8%a7%a3%e8%ae%80%ef%bc%89-cFbjoCFPRr\">\u7406\u89e3Redis\u5206\u4f48\u5f0f\u9396\u7684\u7cbe\u9ad3\uff08redis\u9396\u7684\u539f\u7406\u89e3\u8b80\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u548c\u5354\u8abf\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5206\u4f48\u5f0f\u9396\u7684\u529f\u80fd\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5728\u591a\u500b\u5be6\u4f8b\u4e4b\u9593\u5354\u8abf\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u5206\u4f48\u5f0f\u9396\u7684\u539f\u7406\u53ca\u5176\u5be6\u73fe\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%ef%bc%9f-cFbjoCFPRr\">\u4ec0\u9ebc\u662f\u5206\u4f48\u5f0f\u9396\uff1f<\/h2>\n<p>\u5206\u4f48\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\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u901a\u5e38\u6703\u6709\u591a\u500b\u5be6\u4f8b\u540c\u6642\u904b\u884c\uff0c\u9019\u4e9b\u5be6\u4f8b\u53ef\u80fd\u6703\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u3002\u5206\u4f48\u5f0f\u9396\u7684\u76ee\u7684\u662f\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u5167\uff0c\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u80fd\u5920\u8a2a\u554f\u8a72\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"redis%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-cFbjoCFPRr\">Redis\u5206\u4f48\u5f0f\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis\u5206\u4f48\u5f0f\u9396\u7684\u5be6\u73fe\u4e3b\u8981\u4f9d\u8cf4\u65bcRedis\u7684\u539f\u5b50\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528SETNX\u547d\u4ee4\uff1aSETNX\uff08SET if Not eXists\uff09\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u8a2d\u7f6e\u4e00\u500b\u9375\u7684\u503c\uff0c\u53ea\u6709\u7576\u8a72\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u6210\u529f\u3002\u9019\u610f\u5473\u8457\u6211\u5011\u53ef\u4ee5\u4f7f\u7528SETNX\u4f86\u5617\u8a66\u7372\u53d6\u9396\u3002<\/li>\n<li>\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\uff0c\u7372\u53d6\u9396\u7684\u540c\u6642\u9700\u8981\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u5373\u4f7f\u6301\u9396\u7684\u5be6\u4f8b\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u91cb\u653e\u9396\u6642\u9700\u8981\u78ba\u4fdd\u53ea\u6709\u6301\u9396\u7684\u5be6\u4f8b\u624d\u80fd\u91cb\u653e\u8a72\u9396\u3002\u9019\u901a\u5e38\u901a\u904e\u6aa2\u67e5\u9396\u7684\u503c\u4f86\u5be6\u73fe\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-cFbjoCFPRr\">\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        while True:\n            if self.redis_client.setnx(self.lock_name, \"locked\"):\n                self.redis_client.expire(self.lock_name, 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\nif lock.acquire():\n    try:\n        # \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u64cd\u4f5c\")\n    finally:\n        lock.release()\n        print(\"\u91cb\u653e\u9396\")\n<\/code><\/pre>\n<h2 id=\"redis%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-cFbjoCFPRr\">Redis\u5206\u4f48\u5f0f\u9396\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-cFbjoCFPRr\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u80fd\u5920\u5feb\u901f\u7372\u53d6\u548c\u91cb\u653e\u9396\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>\u4f7f\u7528Redis\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u4ee3\u78bc\u76f8\u5c0d\u7c21\u55ae\uff0c\u6613\u65bc\u7406\u89e3\u548c\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-cFbjoCFPRr\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u53ef\u80fd\u7684\u6b7b\u9396\uff1a<\/strong>\u5982\u679c\u9396\u7684\u6301\u6709\u8005\u5728\u672a\u91cb\u653e\u9396\u7684\u60c5\u6cc1\u4e0b\u5d29\u6f70\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b7b\u9396\u3002<\/li>\n<li><strong>\u4f9d\u8cf4\u65bcRedis\u7684\u53ef\u7528\u6027\uff1a<\/strong>\u5982\u679cRedis\u670d\u52d9\u5668\u51fa\u73fe\u6545\u969c\uff0c\u5247\u7121\u6cd5\u7372\u53d6\u6216\u91cb\u653e\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-cFbjoCFPRr\">\u7d50\u8ad6<\/h2>\n<p>Redis\u5206\u4f48\u5f0f\u9396\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u7528\u65bc\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u5354\u8abf\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u901a\u904e\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u7136\u800c\uff0c\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u5230\u6b7b\u9396\u548cRedis\u53ef\u7528\u6027\u7b49\u554f\u984c\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eRedis\u5206\u4f48\u5f0f\u9396\u7684\u539f\u7406\uff0c\u63ed\u793a\u5176\u6838\u5fc3\u6982\u5ff5\u8207\u61c9\u7528\uff0c\u52a9\u60a8\u6709\u6548\u7ba1\u7406\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u8cc7\u6e90\u7af6\u722d\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-166929","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166929","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=166929"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166929\/revisions"}],"predecessor-version":[{"id":166930,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166929\/revisions\/166930"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}