{"id":155547,"date":"2024-11-02T18:56:22","date_gmt":"2024-11-02T10:56:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/155547\/"},"modified":"2024-11-02T18:56:23","modified_gmt":"2024-11-02T10:56:23","slug":"%e6%96%b9%e6%a1%88%e5%a6%99%e7%94%a8-redis-%e7%b4%85%e9%8e%96%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e5%88%86%e5%b8%83%e5%bc%8f%e7%ab%b6%e7%88%ad%e5%95%8f%e9%a1%8c%ef%bc%88redis-%e7%b4%85","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/155547\/","title":{"rendered":"\u65b9\u6848\u5999\u7528 Redis \u7d05\u9396\uff0c\u8f15\u9b06\u89e3\u6c7a\u5206\u5e03\u5f0f\u7af6\u722d\u554f\u984c\uff08Redis \u7d05\u9396\u89e3\u6c7a\uff09"},"content":{"rendered":"<h1 id=\"%e6%96%b9%e6%a1%88%e5%a6%99%e7%94%a8-redis-%e7%b4%85%e9%8e%96%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e5%88%86%e5%b8%83%e5%bc%8f%e7%ab%b6%e7%88%ad%e5%95%8f%e9%a1%8c-zfrlPSIOyd\">\u65b9\u6848\u5999\u7528 Redis \u7d05\u9396\uff0c\u8f15\u9b06\u89e3\u6c7a\u5206\u5e03\u5f0f\u7af6\u722d\u554f\u984c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u7576\u591a\u500b\u5be6\u4f8b\u540c\u6642\u5617\u8a66\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7cfb\u7d71\u5d29\u6f70\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0cRedis \u63d0\u4f9b\u4e86\u4e00\u7a2e\u540d\u70ba\u300c\u7d05\u9396\u300d\uff08Redlock\uff09\u7684\u9396\u5b9a\u6a5f\u5236\uff0c\u9019\u662f\u4e00\u7a2e\u57fa\u65bc Redis \u7684\u5206\u5e03\u5f0f\u9396\u89e3\u6c7a\u65b9\u6848\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u7d05\u9396\u7684\u539f\u7406\u53ca\u5176\u5728\u89e3\u6c7a\u5206\u5e03\u5f0f\u7af6\u722d\u554f\u984c\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-redis-%e7%b4%85%e9%8e%96%ef%bc%9f-zfrlPSIOyd\">\u4ec0\u9ebc\u662f Redis \u7d05\u9396\uff1f<\/h2>\n<p>Redis \u7d05\u9396\u662f\u4e00\u7a2e\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\uff0c\u65e8\u5728\u89e3\u6c7a\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e4b\u9593\u7684\u9396\u5b9a\u554f\u984c\u3002\u5b83\u7684\u8a2d\u8a08\u7406\u5ff5\u662f\u901a\u904e\u591a\u500b Redis \u5be6\u4f8b\u4f86\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\uff0c\u5f9e\u800c\u907f\u514d\u55ae\u9ede\u6545\u969c\u7684\u98a8\u96aa\u3002\u7d05\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u4f7f\u7528\u591a\u500b Redis \u5be6\u4f8b\u4f86\u7372\u53d6\u9396\uff0c\u53ea\u6709\u7576\u5927\u591a\u6578\u5be6\u4f8b\u6210\u529f\u7372\u53d6\u9396\u6642\uff0c\u9396\u624d\u88ab\u8a8d\u70ba\u662f\u6709\u6548\u7684\u3002<\/p>\n<h2 id=\"%e7%b4%85%e9%8e%96%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-zfrlPSIOyd\">\u7d05\u9396\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u7d05\u9396\u7684\u5de5\u4f5c\u6d41\u7a0b\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li><strong>\u7372\u53d6\u9396\uff1a<\/strong>\u5ba2\u6236\u7aef\u5411\u591a\u500b Redis \u5be6\u4f8b\u8acb\u6c42\u9396\u3002\u901a\u5e38\uff0c\u5efa\u8b70\u4f7f\u7528\u81f3\u5c11\u4e94\u500b Redis \u5be6\u4f8b\u4f86\u63d0\u9ad8\u53ef\u9760\u6027\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u9396\uff1a<\/strong>\u6bcf\u500b Redis \u5be6\u4f8b\u5728\u6210\u529f\u7372\u53d6\u9396\u5f8c\uff0c\u6703\u8a2d\u7f6e\u4e00\u500b\u5e36\u6709\u904e\u671f\u6642\u9593\u7684\u9375\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u56e0\u70ba\u5ba2\u6236\u7aef\u5d29\u6f70\u800c\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u78ba\u8a8d\u9396\uff1a<\/strong>\u5ba2\u6236\u7aef\u9700\u8981\u78ba\u8a8d\u5927\u591a\u6578 Redis \u5be6\u4f8b\uff08\u4f8b\u5982\uff0c\u81f3\u5c11\u4e09\u500b\uff09\u6210\u529f\u7372\u53d6\u9396\uff0c\u9019\u6a23\u624d\u80fd\u8a8d\u70ba\u9396\u662f\u6709\u6548\u7684\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\uff1a<\/strong>\u7576\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u91cb\u653e\u9396\uff0c\u9019\u901a\u5e38\u662f\u901a\u904e\u522a\u9664\u5728\u5404\u500b Redis \u5be6\u4f8b\u4e2d\u8a2d\u7f6e\u7684\u9375\u4f86\u5be6\u73fe\u7684\u3002<\/li>\n<\/ol>\n<h2 id=\"%e7%b4%85%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-zfrlPSIOyd\">\u7d05\u9396\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528 Redis \u7d05\u9396\u6709\u5e7e\u500b\u986f\u8457\u7684\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u53ef\u7528\u6027\uff1a<\/strong>\u7531\u65bc\u7d05\u9396\u4f9d\u8cf4\u65bc\u591a\u500b Redis \u5be6\u4f8b\uff0c\u5373\u4f7f\u67d0\u500b\u5be6\u4f8b\u5931\u6548\uff0c\u7cfb\u7d71\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<li><strong>\u9632\u6b62\u6b7b\u9396\uff1a<\/strong>\u7d05\u9396\u8a2d\u7f6e\u4e86\u904e\u671f\u6642\u9593\uff0c\u9019\u6a23\u5373\u4f7f\u5ba2\u6236\u7aef\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\uff0c\u5f9e\u800c\u9632\u6b62\u6b7b\u9396\u7684\u767c\u751f\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>\u7d05\u9396\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u96c6\u6210\u5230\u73fe\u6709\u7684\u7cfb\u7d71\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%85%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e7%a4%ba%e4%be%8b-zfrlPSIOyd\">\u7d05\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Redis \u7d05\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\nimport time\nimport random\n\nclass RedLock:\n    def __init__(self, redis_instances):\n        self.redis_instances = redis_instances\n\n    def acquire_lock(self, lock_name, acquire_time=10, lock_time=10):\n        identifier = str(random.randint(0, 10000))\n        end = time.time() + acquire_time\n\n        acquired = 0\n        for redis_instance in self.redis_instances:\n            if redis_instance.set(lock_name, identifier, nx=True, ex=lock_time):\n                acquired += 1\n\n        if acquired &gt;= len(self.redis_instances) \/\/ 2 + 1:\n            return identifier\n\n        return None\n\n    def release_lock(self, lock_name, identifier):\n        for redis_instance in self.redis_instances:\n            if redis_instance.get(lock_name) == identifier:\n                redis_instance.delete(lock_name)\n\n# \u4f7f\u7528\u793a\u4f8b\nredis_instances = [redis.StrictRedis(host='localhost', port=6379, db=0) for _ in range(5)]\nlock = RedLock(redis_instances)\n\nidentifier = lock.acquire_lock(\"my_lock\")\nif identifier:\n    print(\"\u7372\u53d6\u9396\u6210\u529f\")\n    # \u57f7\u884c\u696d\u52d9\u908f\u8f2f\n    lock.release_lock(\"my_lock\", identifier)\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-zfrlPSIOyd\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7d05\u9396\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u89e3\u6c7a\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u7af6\u722d\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528\u591a\u500b Redis \u5be6\u4f8b\u4f86\u7372\u53d6\u9396\uff0c\u7d05\u9396\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u53ef\u7528\u6027\uff0c\u9084\u9632\u6b62\u4e86\u6b7b\u9396\u7684\u767c\u751f\u3002\u96a8\u8457\u5206\u5e03\u5f0f\u7cfb\u7d71\u7684\u666e\u53ca\uff0c\u638c\u63e1\u7d05\u9396\u7684\u4f7f\u7528\u5c07\u6210\u70ba\u958b\u767c\u8005\u7684\u4e00\u9805\u91cd\u8981\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u642d\u5efa\u548c\u7ba1\u7406\u60a8\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528 Redis \u7d05\u9396\u8f15\u9b06\u89e3\u6c7a\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u7af6\u722d\u554f\u984c\uff0c\u63d0\u5347\u61c9\u7528\u6548\u80fd\u8207\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-155547","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155547","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=155547"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155547\/revisions"}],"predecessor-version":[{"id":155548,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155547\/revisions\/155548"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=155547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=155547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=155547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}