{"id":153893,"date":"2024-11-02T11:14:22","date_gmt":"2024-11-02T03:14:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153893\/"},"modified":"2024-11-02T11:14:23","modified_gmt":"2024-11-02T03:14:23","slug":"%e5%bd%88%e6%80%a7%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e4%b8%80%e6%ac%a1redis%e9%8e%96%e6%a8%a1%e6%9d%bf%e5%af%a6%e8%b8%90%ef%bc%88redis%e9%8e%96%e6%a8%a1%e6%9d%bf%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153893\/","title":{"rendered":"\u5f48\u6027\u5206\u5e03\u5f0f\u9396\u4e00\u6b21Redis\u9396\u6a21\u677f\u5be6\u8e10\uff08redis\u9396\u6a21\u677f\uff09"},"content":{"rendered":"<h1 id=\"%e5%bd%88%e6%80%a7%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e4%b8%80%e6%ac%a1redis%e9%8e%96%e6%a8%a1%e6%9d%bf%e5%af%a6%e8%b8%90%ef%bc%88redis%e9%8e%96%e6%a8%a1%e6%9d%bf%ef%bc%89-SVSQhEQtCY\">\u5f48\u6027\u5206\u5e03\u5f0f\u9396\u4e00\u6b21Redis\u9396\u6a21\u677f\u5be6\u8e10\uff08redis\u9396\u6a21\u677f\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u548c\u5171\u4eab\u662f\u5e38\u898b\u7684\u6311\u6230\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5206\u5e03\u5f0f\u9396\u7684\u4f7f\u7528\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u5f37\u5927\u7684\u9396\u6a5f\u5236\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u5f48\u6027\u5206\u5e03\u5f0f\u9396\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u9396\u6a21\u677f\u7684\u5be6\u8e10\u793a\u4f8b\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-SVSQhEQtCY\">\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\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7576\u591a\u500b\u5be6\u4f8b\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7af6\u722d\u689d\u4ef6\u3002\u5206\u5e03\u5f0f\u9396\u7684\u76ee\u7684\u662f\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u5167\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u53ef\u4ee5\u8a2a\u554f\u8a72\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-SVSQhEQtCY\">Redis\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u5229\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5411Redis\u767c\u9001\u4e00\u500bSET\u547d\u4ee4\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u56e0\u70ba\u9032\u7a0b\u5d29\u6f70\u800c\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/p>\n<pre><code>SET lock_key unique_value NX PX 30000\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u547d\u4ee4\u4e2d\uff1a<\/p>\n<ul>\n<li><code>lock_key<\/code>\u662f\u9396\u7684\u9375\u540d\u3002<\/li>\n<li><code>unique_value<\/code>\u662f\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u8a72\u6a19\u8b58\u7b26\u7684\u9032\u7a0b\u53ef\u4ee5\u91cb\u653e\u9396\u3002<\/li>\n<li><code>NX<\/code>\u8868\u793a\u53ea\u6709\u7576\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u8a2d\u7f6e\u6210\u529f\u3002<\/li>\n<li><code>PX 30000<\/code>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u70ba30\u79d2\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bd%88%e6%80%a7%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-SVSQhEQtCY\">\u5f48\u6027\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Redis\u9396\u6a21\u677f\u5be6\u73fe\uff0c\u4f7f\u7528Python\u8a9e\u8a00\u548credis-py\u5eab\u4f86\u6f14\u793a\u5982\u4f55\u7372\u53d6\u548c\u91cb\u653e\u9396\u3002<\/p>\n<pre><code>import redis\nimport time\nimport uuid\n\nclass RedisLock:\n    def __init__(self, redis_client, lock_key, expire=30):\n        self.redis_client = redis_client\n        self.lock_key = lock_key\n        self.expire = expire\n        self.lock_value = str(uuid.uuid4())\n\n    def acquire(self):\n        # \u5617\u8a66\u7372\u53d6\u9396\n        if self.redis_client.set(self.lock_key, self.lock_value, nx=True, px=self.expire * 1000):\n            return True\n        return False\n\n    def release(self):\n        # \u91cb\u653e\u9396\n        if self.redis_client.get(self.lock_key) == self.lock_value:\n            self.redis_client.delete(self.lock_key)\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        time.sleep(10)  # \u6a21\u64ec\u9577\u6642\u9593\u64cd\u4f5c\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-SVSQhEQtCY\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u9396\u7684\u904e\u671f\u6642\u9593\u61c9\u6839\u64da\u5be6\u969b\u64cd\u4f5c\u7684\u57f7\u884c\u6642\u9593\u4f86\u8a2d\u7f6e\uff0c\u907f\u514d\u56e0\u70ba\u904e\u671f\u800c\u5c0e\u81f4\u7684\u9396\u91cb\u653e\u554f\u984c\u3002<\/li>\n<li>\u5728\u91cb\u653e\u9396\u6642\uff0c\u5fc5\u9808\u78ba\u8a8d\u7576\u524d\u6301\u6709\u9396\u7684\u9032\u7a0b\u662f\u6b63\u78ba\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u5176\u4ed6\u9032\u7a0b\u8aa4\u91cb\u653e\u9396\u3002<\/li>\n<li>\u8003\u616e\u5230\u7db2\u7d61\u5ef6\u9072\u548cRedis\u7684\u53ef\u7528\u6027\uff0c\u61c9\u8a72\u8a2d\u8a08\u91cd\u8a66\u6a5f\u5236\uff0c\u4ee5\u61c9\u5c0d\u9396\u7372\u53d6\u5931\u6557\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SVSQhEQtCY\">\u7e3d\u7d50<\/h2>\n<p>\u5f48\u6027\u5206\u5e03\u5f0f\u9396\u662f\u78ba\u4fdd\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u8cc7\u6e90\u5b89\u5168\u8a2a\u554f\u7684\u91cd\u8981\u5de5\u5177\u3002\u901a\u904e\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9ad8\u6548\u7684\u9396\u6a5f\u5236\u3002\u672c\u6587\u63d0\u4f9b\u7684Redis\u9396\u6a21\u677f\u53ef\u4ee5\u4f5c\u70ba\u958b\u767c\u8005\u5728\u5be6\u8e10\u4e2d\u4f7f\u7528\u7684\u53c3\u8003\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u7279\u5225\u662f\u5728\u9999\u6e2f\u5730\u5340\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\u80fd\u5920\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5f48\u6027\u5206\u5e03\u5f0f\u9396\u7684Redis\u9396\u6a21\u677f\u5be6\u8e10\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u78ba\u4fdd\u8cc7\u6e90\u5b89\u5168\u9ad8\u6548\u7ba1\u7406\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-153893","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153893","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=153893"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153893\/revisions"}],"predecessor-version":[{"id":153894,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153893\/revisions\/153894"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}