{"id":107762,"date":"2024-10-23T19:05:13","date_gmt":"2024-10-23T11:05:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/107762\/"},"modified":"2024-10-23T19:05:13","modified_gmt":"2024-10-23T11:05:13","slug":"redis-%e7%b4%85%e9%8e%96%e8%a7%a3%e6%b1%ba%e5%88%86%e5%b8%83%e5%bc%8f%e9%ab%98%e4%b8%a6%e7%99%bc%e5%95%8f%e9%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/107762\/","title":{"rendered":"Redis \u7d05\u9396\u89e3\u6c7a\u5206\u5e03\u5f0f\u9ad8\u4e26\u767c\u554f\u984c"},"content":{"rendered":"<h1 id=\"redis-%e7%b4%85%e9%8e%96%e8%a7%a3%e6%b1%ba%e5%88%86%e5%b8%83%e5%bc%8f%e9%ab%98%e4%b8%a6%e7%99%bc%e5%95%8f%e9%a1%8c-piTKfoAsfx\">Redis \u7d05\u9396\u89e3\u6c7a\u5206\u5e03\u5f0f\u9ad8\u4e26\u767c\u554f\u984c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u5206\u5e03\u5f0f\u7cfb\u7d71\u7684\u9ad8\u4e26\u767c\u554f\u984c\u65e5\u76ca\u51f8\u986f\u3002\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\u548c\u8acb\u6c42\u6210\u70ba\u4e86\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002Redis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4f86\u61c9\u5c0d\u9019\u4e9b\u6311\u6230\uff0c\u5176\u4e2d\u300c\u7d05\u9396\u300d\u662f\u4e00\u7a2e\u7279\u5225\u6709\u6548\u7684\u9396\u6a5f\u5236\uff0c\u80fd\u5920\u5728\u5206\u5e03\u5f0f\u74b0\u5883\u4e2d\u5be6\u73fe\u9ad8\u6548\u7684\u9396\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%85%e9%8e%96%ef%bc%9f-piTKfoAsfx\">\u4ec0\u9ebc\u662f\u7d05\u9396\uff1f<\/h2>\n<p>\u7d05\u9396\uff08Redlock\uff09\u662f\u7531 Redis \u7684\u5275\u59cb\u4eba Antirez \u63d0\u51fa\u7684\u5206\u5e03\u5f0f\u9396\u7b97\u6cd5\u3002\u5b83\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e4b\u9593\u5be6\u73fe\u4e00\u500b\u53ef\u9760\u7684\u9396\u6a5f\u5236\uff0c\u4ee5\u89e3\u6c7a\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u53ef\u80fd\u51fa\u73fe\u7684\u7af6\u722d\u689d\u4ef6\u554f\u984c\u3002\u7d05\u9396\u7684\u8a2d\u8a08\u8003\u616e\u5230\u4e86\u7db2\u7d61\u5ef6\u9072\u548c\u6545\u969c\u7684\u60c5\u6cc1\uff0c\u80fd\u5920\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e2d\u4fdd\u6301\u4e00\u81f4\u6027\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-piTKfoAsfx\">\u7d05\u9396\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u7d05\u9396\u7684\u5de5\u4f5c\u539f\u7406\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\uff0c\u901a\u5e38\u662f\u4e94\u500b\u5be6\u4f8b\u3002\u5ba2\u6236\u7aef\u9700\u8981\u5728\u6bcf\u500b\u5be6\u4f8b\u4e0a\u8a2d\u7f6e\u4e00\u500b\u552f\u4e00\u7684\u9396\u6a19\u8b58\u7b26\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002<\/li>\n<li><strong>\u78ba\u8a8d\u9396\uff1a<\/strong>\u5982\u679c\u5ba2\u6236\u7aef\u5728\u5927\u591a\u6578\uff08\u81f3\u5c11\u4e09\u500b\uff09\u5be6\u4f8b\u4e0a\u6210\u529f\u8a2d\u7f6e\u4e86\u9396\uff0c\u5247\u8a8d\u70ba\u9396\u7372\u53d6\u6210\u529f\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9396\uff1a<\/strong>\u5ba2\u6236\u7aef\u5728\u7372\u53d6\u9396\u5f8c\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\uff1a<\/strong>\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u5728\u6240\u6709\u5be6\u4f8b\u4e0a\u91cb\u653e\u9396\u3002\u9019\u9700\u8981\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u5ba2\u6236\u7aef\u624d\u80fd\u91cb\u653e\u9396\uff0c\u4ee5\u907f\u514d\u5176\u4ed6\u5ba2\u6236\u7aef\u8aa4\u91cb\u653e\u3002<\/li>\n<\/ol>\n<h2 id=\"%e7%b4%85%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-piTKfoAsfx\">\u7d05\u9396\u7684\u512a\u52e2<\/h2>\n<p>\u7d05\u9396\u5728\u5206\u5e03\u5f0f\u74b0\u5883\u4e2d\u5177\u6709\u591a\u9805\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\u4e9b\u5be6\u4f8b\u51fa\u73fe\u6545\u969c\uff0c\u7cfb\u7d71\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<li><strong>\u5bb9\u932f\u6027\uff1a<\/strong>\u7d05\u9396\u80fd\u5920\u6709\u6548\u61c9\u5c0d\u7db2\u7d61\u5ef6\u9072\u548c\u6545\u969c\uff0c\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u904e\u7a0b\u7684\u53ef\u9760\u6027\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-piTKfoAsfx\">\u7d05\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Redis \u5be6\u73fe\u7d05\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\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        lock_count = 0\n\n        for node in self.nodes:\n            if node.set(lock_key, identifier, nx=True, px=ttl):\n                lock_count += 1\n\n        if lock_count &gt;= len(self.nodes) \/\/ 2 + 1:\n            return identifier\n        else:\n            self.release_lock(lock_key, identifier)\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\n# \u4f7f\u7528\u793a\u4f8b\nnodes = [redis.Redis(host='localhost', port=6379), redis.Redis(host='localhost', port=6380)]\nredlock = Redlock(nodes)\nlock_id = redlock.acquire_lock(\"my_lock\", 10000)\nif lock_id:\n    print(\"\u7372\u53d6\u9396\u6210\u529f\")\n    # \u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\n    redlock.release_lock(\"my_lock\", lock_id)\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-piTKfoAsfx\">\u7d50\u8ad6<\/h2>\n<p>\u7d05\u9396\u4f5c\u70ba\u4e00\u7a2e\u6709\u6548\u7684\u5206\u5e03\u5f0f\u9396\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\u6709\u6548\u7ba1\u7406\u8cc7\u6e90\uff0c\u907f\u514d\u7af6\u722d\u689d\u4ef6\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\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u61c9\u5c0d\u9ad8\u4e26\u767c\u6311\u6230\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7d05\u9396\u5982\u4f55\u6709\u6548\u89e3\u6c7a\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u9ad8\u4e26\u767c\u554f\u984c\uff0c\u63d0\u5347\u6027\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-107762","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107762","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=107762"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107762\/revisions"}],"predecessor-version":[{"id":107763,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/107762\/revisions\/107763"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=107762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=107762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=107762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}