{"id":159445,"date":"2024-11-03T14:36:20","date_gmt":"2024-11-03T06:36:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159445\/"},"modified":"2024-11-03T14:36:20","modified_gmt":"2024-11-03T06:36:20","slug":"%e7%b4%85%e8%89%b2%e5%85%89%e8%8a%92redis%e9%8e%96%e5%ae%9a%e6%9f%a5%e8%a9%a2%ef%bc%88redis%e9%8e%96%e6%9f%a5%e8%a9%a2%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159445\/","title":{"rendered":"\u7d05\u8272\u5149\u8292Redis\u9396\u5b9a\u67e5\u8a62\uff08redis\u9396\u67e5\u8a62\uff09"},"content":{"rendered":"<h1 id=\"%e7%b4%85%e8%89%b2%e5%85%89%e8%8a%92redis%e9%8e%96%e5%ae%9a%e6%9f%a5%e8%a9%a2%ef%bc%88redis%e9%8e%96%e6%9f%a5%e8%a9%a2%ef%bc%89-dQGMaBGwln\">\u7d05\u8272\u5149\u8292Redis\u9396\u5b9a\u67e5\u8a62\uff08redis\u9396\u67e5\u8a62\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u67e5\u8a62\u548c\u9ad8\u4f75\u767c\u7684\u61c9\u7528\u4e2d\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684\u9396\u5b9a\u67e5\u8a62\u6a5f\u5236\uff0c\u7279\u5225\u662f\u7d05\u8272\u5149\u8292\uff08Redlock\uff09\u7b97\u6cd5\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%e5%ae%9a%e6%9f%a5%e8%a9%a2%ef%bc%9f-dQGMaBGwln\">\u4ec0\u9ebc\u662fRedis\u9396\u5b9a\u67e5\u8a62\uff1f<\/h2>\n<p>Redis\u9396\u5b9a\u67e5\u8a62\u662f\u6307\u5728\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u9396\u5b9a\u6a5f\u5236\uff0c\u4ee5\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002\u9019\u7a2e\u9396\u5b9a\u6a5f\u5236\u53ef\u4ee5\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u5ba2\u6236\u7aef\u80fd\u5920\u8a2a\u554f\u7279\u5b9a\u7684\u8cc7\u6e90\uff0c\u5f9e\u800c\u4fdd\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"%e7%b4%85%e8%89%b2%e5%85%89%e8%8a%92%ef%bc%88redlock%ef%bc%89%e7%ae%97%e6%b3%95-dQGMaBGwln\">\u7d05\u8272\u5149\u8292\uff08Redlock\uff09\u7b97\u6cd5<\/h2>\n<p>\u7d05\u8272\u5149\u8292\u7b97\u6cd5\u662f\u7531Redis\u7684\u5275\u59cb\u4ebaAntirez\u63d0\u51fa\u7684\u4e00\u7a2e\u5206\u4f48\u5f0f\u9396\u5b9a\u7b97\u6cd5\u3002\u5b83\u65e8\u5728\u89e3\u6c7a\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u4f7f\u7528Redis\u4f5c\u70ba\u9396\u7684\u554f\u984c\u3002Redlock\u7684\u57fa\u672c\u601d\u60f3\u662f\u901a\u904e\u591a\u500bRedis\u5be6\u4f8b\u4f86\u7372\u53d6\u9396\uff0c\u5f9e\u800c\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<h3 id=\"redlock%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-dQGMaBGwln\">Redlock\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<ul>\n<li>\u9996\u5148\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u7372\u53d6\u9396\uff0c\u9019\u901a\u5e38\u6d89\u53ca\u5230\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u9396\u6a19\u8b58\u7b26\uff08\u5982UUID\uff09\u548c\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u5ba2\u6236\u7aef\u5411\u591a\u500bRedis\u5be6\u4f8b\uff08\u901a\u5e38\u662f5\u500b\uff09\u8acb\u6c42\u7372\u53d6\u9396\u3002\u5982\u679c\u5728\u5927\u591a\u6578\u5be6\u4f8b\u4e2d\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u8a8d\u70ba\u9396\u7372\u53d6\u6210\u529f\u3002<\/li>\n<li>\u5982\u679c\u7372\u53d6\u9396\u6210\u529f\uff0c\u5ba2\u6236\u7aef\u53ef\u4ee5\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\uff0c\u4e26\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\u91cb\u653e\u9396\u3002<\/li>\n<li>\u5982\u679c\u7372\u53d6\u9396\u5931\u6557\uff0c\u5ba2\u6236\u7aef\u53ef\u4ee5\u9078\u64c7\u91cd\u8a66\u6216\u653e\u68c4\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3 id=\"redlock%e7%9a%84%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-dQGMaBGwln\">Redlock\u7684\u4ee3\u78bc\u793a\u4f8b<\/h3>\n<pre><code>\nimport redis\nimport time\nimport uuid\n\nclass Redlock:\n    def __init__(self, nodes):\n        self.nodes = nodes\n\n    def acquire_lock(self, lock_key, ttl):\n        identifier = str(uuid.uuid4())\n        start_time = time.time()\n        acquired = 0\n\n        for node in self.nodes:\n            if node.set(lock_key, identifier, nx=True, ex=ttl):\n                acquired += 1\n\n        if acquired &gt;= len(self.nodes) \/\/ 2 + 1:\n            return identifier\n\n        # \u91cb\u653e\u5df2\u7372\u53d6\u7684\u9396\n        for node in self.nodes:\n            if node.get(lock_key) == identifier:\n                node.delete(lock_key)\n\n        return None\n\n    def release_lock(self, lock_key, identifier):\n        for node in self.nodes:\n            if node.get(lock_key) == identifier:\n                node.delete(lock_key)\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e5%ae%9a%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%84%aa%e5%8b%a2-dQGMaBGwln\">\u4f7f\u7528Redis\u9396\u5b9a\u67e5\u8a62\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis\u7684\u5167\u5b58\u5b58\u5132\u7279\u6027\u4f7f\u5f97\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u901f\u5ea6\u975e\u5e38\u5feb\u3002<\/li>\n<li><strong>\u53ef\u9760\u6027\uff1a<\/strong>\u901a\u904eRedlock\u7b97\u6cd5\uff0c\u53ef\u4ee5\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e2d\u5be6\u73fe\u9ad8\u53ef\u7528\u7684\u9396\u5b9a\u6a5f\u5236\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6027\uff1a<\/strong>\u4f7f\u7528Redis\u4f5c\u70ba\u9396\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u4e26\u4e14\u53ef\u4ee5\u8f15\u9b06\u96c6\u6210\u5230\u73fe\u6709\u7684\u61c9\u7528\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-dQGMaBGwln\">\u7d50\u8ad6<\/h2>\n<p>Redis\u7684\u9396\u5b9a\u67e5\u8a62\u6a5f\u5236\uff0c\u7279\u5225\u662f\u7d05\u8272\u5149\u8292\u7b97\u6cd5\uff0c\u70ba\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528\u9019\u4e9b\u9396\u5b9a\u6a5f\u5236\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u591a\u500b\u5ba2\u6236\u7aef\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\uff0c\u5f9e\u800c\u63d0\u9ad8\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\u73feRedis\u9396\u5b9a\u67e5\u8a62\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>\u63a2\u7d22\u7d05\u8272\u5149\u8292Redis\u9396\u5b9a\u67e5\u8a62\uff0c\u4e86\u89e3\u5982\u4f55\u9ad8\u6548\u7ba1\u7406Redis\u9396\u67e5\u8a62\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6027\u80fd\u8207\u7cfb\u7d71\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-159445","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159445","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=159445"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159445\/revisions"}],"predecessor-version":[{"id":159446,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159445\/revisions\/159446"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=159445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=159445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=159445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}