{"id":45086,"date":"2024-12-01T16:43:22","date_gmt":"2024-12-01T08:43:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/45086\/"},"modified":"2024-12-01T16:43:22","modified_gmt":"2024-12-01T08:43:22","slug":"redis%e4%bd%9c%e4%b8%ba%e7%bc%93%e5%ad%98%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/45086\/","title":{"rendered":"Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848"},"content":{"rendered":"

<\/b> <\/p>\n

Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300aRedis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848<\/p>\n

\u968f\u7740\u5b9e\u65f6\u6027\u8981\u6c42\u8d8a\u6765\u8d8a\u9ad8\u548c\u8d1f\u8f7d\u8d8a\u6765\u8d8a\u5927\uff0c\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u5e94\u7528\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u53ef\u80fd\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4e24\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\uff0c\u4ece\u800c\u5bfc\u81f4\u7ade\u6001\u6761\u4ef6\uff08race conditions\uff09\u3002\u8981\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u5f00\u53d1\u4eba\u5458\u9700\u8981\u8003\u8651\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n

\u5206\u5e03\u5f0f\u9501\u662f\u6307\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\u5b9e\u65bd\u7684\u9501\u3002\u5b83\u4eec\u53ef\u4ee5\u9632\u6b62\u7531\u4e8e\u591a\u4e2a\u8fdb\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u800c\u5bfc\u81f4\u7684\u7ade\u6001\u6761\u4ef6\u3002\u5206\u5e03\u5f0f\u9501\u53ea\u5141\u8bb8\u4e00\u4e2a\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u4e00\u4e2a\u5171\u4eab\u8d44\u6e90\u3002\u5206\u5e03\u5f0f\u9501\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5176\u4e2d\u4e4b\u4e00\u662f\u4f7f\u7528Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u3002<\/p>\n

Redis\u662f\u4e00\u79cd\u57fa\u4e8e\u5185\u5b58\u7684\u952e\u503c\u5bf9\u6570\u636e\u5e93\u3002Redis\u88ab\u5e7f\u6cdb\u7528\u4e8e\u7f13\u5b58\u3001\u961f\u5217\u3001\u8ba1\u6570\u5668\u548c\u5206\u5e03\u5f0f\u9501\u7b49\u573a\u666f\u3002\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528SET\u547d\u4ee4\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002SET\u547d\u4ee4\u5141\u8bb8\u6211\u4eec\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u5982\u679c\u8be5\u952e\u4e0d\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd4\u56deOK\uff1b\u5982\u679c\u8be5\u952e\u5df2\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u5931\u8d25\uff0c\u8fd4\u56denil\u3002\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528SET\u547d\u4ee4\u8bbe\u7f6e\u4e00\u4e2a\u952e\u4e3a\u9501\u5b9a\u72b6\u6001\u7684\u503c\uff0c\u5e76\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ece\u800c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n

\u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u4f7f\u7528Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u7684\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n

import redis\n\nredis_client = redis.Redis(host='localhost', port=6379)\n\ndef acquire_lock(lock_name, expire_time=30):\n    # Set a lock with the given name and expiration time\n    lock_key = f\"lock:{lock_name}\"\n    acquired = redis_client.set(lock_key, 1, ex=expire_time, nx=True)\n    return bool(acquired)\n\ndef release_lock(lock_name):\n    # Release the lock with the given name\n    lock_key = f\"lock:{lock_name}\"\n    redis_client.delete(lock_key)<\/pre>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4ee3\u7801\u4e2d\uff0cacquire_lock\u51fd\u6570\u5b9e\u73b0\u4e86\u83b7\u53d6\u9501\u7684\u529f\u80fd\u3002\u5b83\u4f7f\u7528Redis\u7684SET\u547d\u4ee4\u6765\u8bbe\u7f6e\u4e00\u4e2a\u201clock:lock_name\u201d\u7684\u952e\u4e3a\u9501\u5b9a\u72b6\u6001\uff08\u503c\u4e3a1\uff09\uff0c\u5e76\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4e3a30\u79d2\u3002\u5982\u679c\u952e\u201clock:lock_name\u201d\u4e0d\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd4\u56deTrue\uff1b\u5982\u679c\u8be5\u952e\u5df2\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u5931\u8d25\uff0c\u8fd4\u56deFalse\u3002<\/p>\n
release_lock\u51fd\u6570\u5b9e\u73b0\u4e86\u91ca\u653e\u9501\u7684\u529f\u80fd\u3002\u5b83\u4f7f\u7528Redis\u7684DEL\u547d\u4ee4\u6765\u5220\u9664\u201clock:lock_name\u201d\u952e\u3002<\/p>\n
\u5728\u4f7f\u7528Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u95ee\u9898\u3002\u9996\u5148\uff0c\u9700\u8981\u786e\u4fdd\u8fc7\u671f\u65f6\u95f4\u8db3\u591f\u77ed\uff0c\u4ee5\u907f\u514d\u9501\u4fdd\u6301\u592a\u4e45\u800c\u5bfc\u81f4\u5176\u4ed6\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u65e0\u6cd5\u8bbf\u95ee\u53d7\u4fdd\u62a4\u7684\u8d44\u6e90\u3002\u5176\u6b21\uff0c\u9700\u8981\u786e\u4fdd\u9501\u7684\u7c92\u5ea6\u8db3\u591f\u7ec6\uff0c\u907f\u514d\u9501\u5b9a\u65f6\u95f4\u8fc7\u957f\u548c\u9501\u7684\u7ade\u4e89\u8fc7\u4e8e\u9891\u7e41\uff0c\u964d\u4f4e\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u3002<\/p>\n
\u603b\u7ed3\u4e00\u4e0b\uff0cRedis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u6709\u5f88\u591a\u5e94\u7528\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u7ade\u6001\u6761\u4ef6\u95ee\u9898\u3002\u5728\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u8fc7\u671f\u65f6\u95f4\u548c\u9501\u7684\u7c92\u5ea6\u95ee\u9898\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aRedis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8eredis,\u5206\u5e03\u5f0f\u9501,\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8golang\u5b66\u4e60\u7f51\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n
\n   Golang\u4e2d\u4f7f\u7528\u7f13\u5b58\u52a0\u901f\u56fe\u50cf\u8d85\u5206\u8fa8\u7387\u7b97\u6cd5\u7684\u5b9e\u8df5\u3002\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u6027\u80fd\u5bf9\u6bd4\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848 \u6536\u85cf \u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300aRedis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002 Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848 \u968f\u7740\u5b9e\u65f6\u6027\u8981\u6c42\u8d8a\u6765\u8d8a\u9ad8\u548c\u8d1f\u8f7d\u8d8a\u6765\u8d8a\u5927\uff0c\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u5e94\u7528\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u53ef\u80fd\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4e24\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\uff0c\u4ece\u800c\u5bfc\u81f4\u7ade\u6001\u6761\u4ef6\uff08race conditions\uff09\u3002\u8981\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u5f00\u53d1\u4eba\u5458\u9700\u8981\u8003\u8651\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u3002 \u5206\u5e03\u5f0f\u9501\u662f\u6307\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\u5b9e\u65bd\u7684\u9501\u3002\u5b83\u4eec\u53ef\u4ee5\u9632\u6b62\u7531\u4e8e\u591a\u4e2a\u8fdb\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u800c\u5bfc\u81f4\u7684\u7ade\u6001\u6761\u4ef6\u3002\u5206\u5e03\u5f0f\u9501\u53ea\u5141\u8bb8\u4e00\u4e2a\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u4e00\u4e2a\u5171\u4eab\u8d44\u6e90\u3002\u5206\u5e03\u5f0f\u9501\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5176\u4e2d\u4e4b\u4e00\u662f\u4f7f\u7528Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u3002 Redis\u662f\u4e00\u79cd\u57fa\u4e8e\u5185\u5b58\u7684\u952e\u503c\u5bf9\u6570\u636e\u5e93\u3002Redis\u88ab\u5e7f\u6cdb\u7528\u4e8e\u7f13\u5b58\u3001\u961f\u5217\u3001\u8ba1\u6570\u5668\u548c\u5206\u5e03\u5f0f\u9501\u7b49\u573a\u666f\u3002\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528SET\u547d\u4ee4\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002SET\u547d\u4ee4\u5141\u8bb8\u6211\u4eec\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u5bf9\uff0c\u5982\u679c\u8be5\u952e\u4e0d\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd4\u56deOK\uff1b\u5982\u679c\u8be5\u952e\u5df2\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u5931\u8d25\uff0c\u8fd4\u56denil\u3002\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528SET\u547d\u4ee4\u8bbe\u7f6e\u4e00\u4e2a\u952e\u4e3a\u9501\u5b9a\u72b6\u6001\u7684\u503c\uff0c\u5e76\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ece\u800c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002 \u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u4f7f\u7528Redis\u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u7684\u793a\u4f8b\u4ee3\u7801\u3002 import redis redis_client = redis.Redis(host=’localhost’, port=6379) def acquire_lock(lock_name, expire_time=30): # Set a lock with the given name and expiration time lock_key = f”lock:{lock_name}” acquired = redis_client.set(lock_key, 1, ex=expire_time, nx=True) return bool(acquired) def release_lock(lock_name): # Release the lock with the given name lock_key = f”lock:{lock_name}” redis_client.delete(lock_key) \u5728\u8fd9\u4e2a\u793a\u4f8b\u4ee3\u7801\u4e2d\uff0cacquire_lock\u51fd\u6570\u5b9e\u73b0\u4e86\u83b7\u53d6\u9501\u7684\u529f\u80fd\u3002\u5b83\u4f7f\u7528Redis\u7684SET\u547d\u4ee4\u6765\u8bbe\u7f6e\u4e00\u4e2a\u201clock:lock_name\u201d\u7684\u952e\u4e3a\u9501\u5b9a\u72b6\u6001\uff08\u503c\u4e3a1\uff09\uff0c\u5e76\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4e3a30\u79d2\u3002\u5982\u679c\u952e\u201clock:lock_name\u201d\u4e0d\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd4\u56deTrue\uff1b\u5982\u679c\u8be5\u952e\u5df2\u5b58\u5728\uff0c\u5219\u8bbe\u7f6e\u5931\u8d25\uff0c\u8fd4\u56deFalse\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-45086","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/45086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=45086"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/45086\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=45086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=45086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=45086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}