{"id":171541,"date":"2024-11-07T03:36:19","date_gmt":"2024-11-06T19:36:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171541\/"},"modified":"2024-11-07T03:36:20","modified_gmt":"2024-11-06T19:36:20","slug":"%e5%bc%b7%e5%a4%a7%e7%9a%84%e9%ab%98%e6%80%a7%e8%83%bdredis%e9%8e%96%e7%9a%84%e7%8d%a8%e7%89%b9%e5%84%aa%e5%8b%a2%ef%bc%88redis%e9%8e%96%e7%9a%84%e7%89%b9%e9%bb%9e%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171541\/","title":{"rendered":"\u5f37\u5927\u7684\u9ad8\u6027\u80fdRedis\u9396\u7684\u7368\u7279\u512a\u52e2\uff08redis\u9396\u7684\u7279\u9ede\uff09"},"content":{"rendered":"

\u5f37\u5927\u7684\u9ad8\u6027\u80fdRedis\u9396\u7684\u7368\u7279\u512a\u52e2<\/h1>\n

\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u8cc7\u6e90\u7ba1\u7406\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u5be6\u73fe\u6578\u64da\u7684\u9396\u5b9a\uff0c\u7279\u5225\u662f\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u7684\u7279\u9ede\u53ca\u5176\u7368\u7279\u512a\u52e2\u3002<\/p>\n

\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n

Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u4fee\u6539\u540c\u4e00\u6578\u64da\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u9396\u901a\u5e38\u57fa\u65bcSETNX\u547d\u4ee4\u5be6\u73fe\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u5167\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u80fd\u5920\u7372\u5f97\u9396\u3002<\/p>\n

Redis\u9396\u7684\u7279\u9ede<\/h2>\n

1. \u9ad8\u6027\u80fd<\/h3>\n

Redis\u662f\u4e00\u500b\u5167\u5b58\u6578\u64da\u5eab\uff0c\u6240\u6709\u64cd\u4f5c\u90fd\u5728\u5167\u5b58\u4e2d\u9032\u884c\uff0c\u56e0\u6b64\u5176\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u901f\u5ea6\u975e\u5e38\u5feb\u3002\u9019\u4f7f\u5f97Redis\u9396\u5728\u9700\u8981\u9ad8\u983b\u7387\u8a2a\u554f\u7684\u5834\u666f\u4e2d\u8868\u73fe\u51fa\u8272\u3002<\/p>\n

2. \u539f\u5b50\u6027<\/h3>\n

\u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\u53ef\u4ee5\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u662f\u539f\u5b50\u64cd\u4f5c\u3002\u9019\u610f\u5473\u8457\u5728\u591a\u500b\u9032\u7a0b\u540c\u6642\u5617\u8a66\u7372\u53d6\u9396\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u80fd\u5920\u6210\u529f\uff0c\u5176\u4ed6\u9032\u7a0b\u5c07\u7121\u6cd5\u7372\u5f97\u9396\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n

3. \u53ef\u91cd\u5165\u6027<\/h3>\n

Redis\u9396\u53ef\u4ee5\u8a2d\u8a08\u70ba\u53ef\u91cd\u5165\u7684\uff0c\u9019\u610f\u5473\u8457\u540c\u4e00\u500b\u9032\u7a0b\u53ef\u4ee5\u591a\u6b21\u7372\u53d6\u9396\u800c\u4e0d\u6703\u9020\u6210\u6b7b\u9396\u3002\u9019\u5c0d\u65bc\u9700\u8981\u5728\u540c\u4e00\u4e0a\u4e0b\u6587\u4e2d\u591a\u6b21\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u7684\u61c9\u7528\u7a0b\u5e8f\u7279\u5225\u6709\u7528\u3002<\/p>\n

4. \u81ea\u52d5\u904e\u671f<\/h3>\n

\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\uff0cRedis\u9396\u53ef\u4ee5\u8a2d\u7f6e\u81ea\u52d5\u904e\u671f\u6642\u9593\u3002\u5982\u679c\u6301\u6709\u9396\u7684\u9032\u7a0b\u56e0\u6545\u969c\u800c\u672a\u80fd\u91cb\u653e\u9396\uff0c\u9396\u5c07\u5728\u904e\u671f\u5f8c\u81ea\u52d5\u91cb\u653e\uff0c\u9019\u6a23\u53ef\u4ee5\u4fdd\u8b49\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n

5. \u5206\u4f48\u5f0f\u652f\u6301<\/h3>\n

Redis\u9396\u975e\u5e38\u9069\u5408\u5206\u4f48\u5f0f\u7cfb\u7d71\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u5728\u591a\u500b\u670d\u52d9\u5668\u4e4b\u9593\u5171\u4eab\u3002\u9019\u4f7f\u5f97\u5728\u5fae\u670d\u52d9\u67b6\u69cb\u4e2d\uff0c\u670d\u52d9\u4e4b\u9593\u53ef\u4ee5\u5b89\u5168\u5730\u5354\u4f5c\uff0c\u907f\u514d\u6578\u64da\u885d\u7a81\u3002<\/p>\n

Redis\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n

import 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    end = time.time() + acquire_time\n    while time.time() < end:\n        if r.set(lock_name, identifier, nx=True, ex=acquire_time):\n            return identifier\n        time.sleep(0.001)  # \u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\n    return False\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<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u5169\u500b\u51fd\u6578\uff1a\u4e00\u500b\u7528\u65bc\u7372\u53d6\u9396\uff0c\u53e6\u4e00\u500b\u7528\u65bc\u91cb\u653e\u9396\u3002\u9019\u6a23\u7684\u5be6\u73fe\u78ba\u4fdd\u4e86\u9396\u7684\u539f\u5b50\u6027\u548c\u81ea\u52d5\u904e\u671f\u7279\u6027\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis\u9396\u4ee5\u5176\u9ad8\u6027\u80fd\u3001\u539f\u5b50\u6027\u3001\u53ef\u91cd\u5165\u6027\u3001\u81ea\u52d5\u904e\u671f\u548c\u5206\u4f48\u5f0f\u652f\u6301\u7b49\u7279\u9ede\uff0c\u6210\u70ba\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u7121\u8ad6\u662f\u5728\u5fae\u670d\u52d9\u67b6\u69cb\u9084\u662f\u50b3\u7d71\u7684\u55ae\u9ad4\u61c9\u7528\u4e2d\uff0cRedis\u9396\u90fd\u80fd\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\uff0c\u8003\u616e\u4f7f\u7528Redis\u9396\u4f86\u63d0\u5347\u60a8\u7684\u61c9\u7528\u6027\u80fd\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u9999\u6e2fVPS<\/a>\u548c\u5176\u4ed6\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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