{"id":128571,"date":"2024-10-26T15:09:33","date_gmt":"2024-10-26T07:09:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128571\/"},"modified":"2024-10-26T15:09:33","modified_gmt":"2024-10-26T07:09:33","slug":"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e5%8f%af%e9%9d%a0%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%88redis%e9%ab%98%e6%80%a7%e8%83%bd%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128571\/","title":{"rendered":"Redis\u5be6\u73fe\u9ad8\u6548\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u9396\uff08redis\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u9396\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e5%8f%af%e9%9d%a0%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%88redis%e9%ab%98%e6%80%a7%e8%83%bd%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%89-xhJsRXNgtz\">Redis\u5be6\u73fe\u9ad8\u6548\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u9396\uff08redis\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5206\u5e03\u5f0f\u9396\u4f5c\u70ba\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u6709\u6548\u5730\u5354\u8abf\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u4e4b\u9593\u7684\u8cc7\u6e90\u8a2a\u554f\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u7406\u60f3\u5de5\u5177\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u9396\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-xhJsRXNgtz\">\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\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u9032\u7a0b\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u9396\u88ab\u91cb\u653e\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u554f\u984c\u3002\u5206\u5e03\u5f0f\u9396\u7279\u5225\u9069\u7528\u65bc\u5fae\u670d\u52d9\u67b6\u69cb\u548c\u96f2\u8a08\u7b97\u74b0\u5883\u4e2d\uff0c\u56e0\u70ba\u9019\u4e9b\u74b0\u5883\u901a\u5e38\u6d89\u53ca\u591a\u500b\u7368\u7acb\u7684\u670d\u52d9\u548c\u5be6\u4f8b\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87redis%ef%bc%9f-xhJsRXNgtz\">\u70ba\u4ec0\u9ebc\u9078\u64c7Redis\uff1f<\/h2>\n<p>Redis\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u7684\u8b80\u5beb\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u652f\u6301\u6bcf\u79d2\u6578\u5341\u842c\u6b21\u7684\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis\u7684API\u7c21\u55ae\u660e\u77ad\uff0c\u6613\u65bc\u96c6\u6210\u5230\u5404\u7a2e\u61c9\u7528\u4e2d\u3002<\/li>\n<li><strong>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff1a<\/strong>\u9664\u4e86\u9375\u503c\u5c0d\uff0cRedis\u9084\u652f\u6301\u5217\u8868\u3001\u96c6\u5408\u3001\u54c8\u5e0c\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u9748\u6d3b\u6027\u9ad8\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-xhJsRXNgtz\">Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u5229\u7528\u5176\u539f\u5b50\u64cd\u4f5c\u4f86\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528SETNX\u547d\u4ee4\u5617\u8a66\u7372\u53d6\u9396\u3002\u5982\u679c\u9396\u4e0d\u5b58\u5728\uff0c\u5247\u8a2d\u7f6e\u9396\u4e26\u8fd4\u56de\u6210\u529f\uff1b\u5982\u679c\u9396\u5df2\u5b58\u5728\uff0c\u5247\u8fd4\u56de\u5931\u6557\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/li>\n<li>\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u4f7f\u7528DEL\u547d\u4ee4\u91cb\u653e\u9396\u3002<\/li>\n<\/ol>\n<h2 id=\"redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e7%a4%ba%e4%be%8b-xhJsRXNgtz\">Redis\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport redis\nimport time\n\n# \u9023\u63a5\u5230Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\ndef acquire_lock(lock_name, acquire_time=10):\n    identifier = str(uuid.uuid4())\n    lock = r.set(lock_name, identifier, nx=True, ex=acquire_time)\n    return lock, identifier\n\ndef release_lock(lock_name, identifier):\n    pipe = r.pipeline(True)\n    while True:\n        try:\n            pipe.watch(lock_name)\n            if pipe.get(lock_name) == identifier:\n                pipe.multi()\n                pipe.delete(lock_name)\n                pipe.execute()\n                return True\n            pipe.unwatch()\n            break\n        except redis.WatchError:\n            pass\n    return False\n\n# \u4f7f\u7528\u5206\u5e03\u5f0f\u9396\nlock_name = \"my_lock\"\nlock, identifier = acquire_lock(lock_name)\nif lock:\n    try:\n        # \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n        time.sleep(5)  # \u6a21\u64ec\u64cd\u4f5c\n    finally:\n        release_lock(lock_name, identifier)\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-xhJsRXNgtz\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li><strong>\u9396\u7684\u552f\u4e00\u6027\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u9396\u7684\u552f\u4e00\u6027\uff0c\u907f\u514d\u4e0d\u540c\u9032\u7a0b\u4e4b\u9593\u7684\u9396\u885d\u7a81\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u7372\u53d6\u548c\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\uff0c\u61c9\u8a72\u8003\u616e\u5230\u53ef\u80fd\u7684\u932f\u8aa4\u60c5\u6cc1\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xhJsRXNgtz\">\u7e3d\u7d50<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u53ef\u9760\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\uff0c\u80fd\u5920\u6709\u6548\u5730\u5354\u8abf\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u4e4b\u9593\u7684\u8cc7\u6e90\u8a2a\u554f\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u554f\u984c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6027\u80fd\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u5728\u9ad8\u8ca0\u8f09\u4e0b\u4f9d\u7136\u80fd\u5920\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u78ba\u4fdd\u7cfb\u7d71\u9ad8\u6548\u53ef\u9760\uff0c\u89e3\u6c7a\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u8cc7\u6e90\u7af6\u722d\u554f\u984c\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-128571","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128571","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=128571"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128571\/revisions"}],"predecessor-version":[{"id":128572,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128571\/revisions\/128572"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}