{"id":201497,"date":"2025-05-10T08:21:19","date_gmt":"2025-05-10T00:21:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201497\/"},"modified":"2025-05-10T08:21:19","modified_gmt":"2025-05-10T00:21:19","slug":"%e5%bc%80%e5%a7%8b%e5%90%a7%ef%bc%81redis%e5%9c%a8%e6%b5%b7%e9%87%8f%e6%95%b0%e6%8d%ae%e5%92%8c%e9%ab%98%e5%b9%b6%e5%8f%91%e4%b8%ad%e7%9a%84%e4%bc%98%e5%8c%96%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201497\/","title":{"rendered":"\u5f00\u59cb\u5427\uff01Redis\u5728\u6d77\u91cf\u6570\u636e\u548c\u9ad8\u5e76\u53d1\u4e2d\u7684\u4f18\u5316\u5b9e\u8df5"},"content":{"rendered":"

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

\u5f00\u59cb\u5427\uff01Redis\u5728\u6d77\u91cf\u6570\u636e\u548c\u9ad8\u5e76\u53d1\u4e2d\u7684\u4f18\u5316\u5b9e\u8df5<\/h1>\n

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

\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5f00\u59cb\u5427\uff01Redis\u5728\u6d77\u91cf\u6570\u636e\u548c\u9ad8\u5e76\u53d1\u4e2d\u7684\u4f18\u5316\u5b9e\u8df5\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n

Redis \u5bf9\u4e8e\u4ece\u4e8b\u4e92\u8054\u7f51\u6280\u672f\u5de5\u7a0b\u5e08\u6765\u8bf4\u5e76\u4e0d\u964c\u751f\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u5927\u4e2d\u578b\u4f01\u4e1a\u90fd\u5728\u4f7f\u7528 Redis \u4f5c\u4e3a\u7f13\u5b58\u6570\u636e\u5e93\u3002<\/p>\n

\u4f46\u662f\u5bf9\u4e8e\u7edd\u5927\u591a\u6570\u4f01\u4e1a\u6765\u8bf4\u53ea\u4f1a\u7528\u5230\u5b83\u7684\u6700\u57fa\u7840\u7684 KV \u7f13\u5b58\u529f\u80fd\uff0c\u8fd8\u6709\u5f88\u591a Redis \u7684\u9ad8\u7ea7\u529f\u80fd\u53ef\u80fd\u90fd\u672a\u66fe\u8ba4\u771f\u5b9e\u8df5\u8fc7\u3002<\/p>\n

\u6765\u81ea\u638c\u9605\u7684\u5de5\u7a0b\u5e08\u94b1\u6587\u54c1\u5c06\u4e3a\u5927\u5bb6\u5e26\u6765\uff1a\u300aRedis \u5728\u6d77\u91cf\u6570\u636e\u548c\u9ad8\u5e76\u53d1\u4e0b\u7684\u4f18\u5316\u5b9e\u8df5\u300b\u7684\u4e3b\u9898\u5206\u4eab\u3002<\/p>\n

\u4ed6\u5c06\u56f4\u7ed5 Redis \u5206\u4eab\u5728\u5e73\u65f6\u7684\u65e5\u5e38\u4e1a\u52a1\u5f00\u53d1\u4e2d\u9047\u5230\u7684 9 \u4e2a\u7ecf\u5178\u6848\u4f8b\uff0c\u5e0c\u671b\u901a\u8fc7\u6b64\u6b21\u5206\u4eab\u53ef\u4ee5\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u7684\u5c06 Redis  \u7684\u9ad8\u7ea7\u7279\u6027\u5e94\u7528\u5230\u65e5\u5e38\u7684\u4e1a\u52a1\u5f00\u53d1\u4e2d\u6765\u3002<\/p>\n

\u638c\u9605\u7535\u5b50\u4e66\u9605\u8bfb\u8f6f\u4ef6 ireader \u7684\u603b\u7528\u6237\u91cf\u5927\u6982\u662f 5 \u4ebf\u5de6\u53f3\uff0c\u6708\u6d3b 5000 \u4e07\uff0c\u65e5\u6d3b\u8fd1 2000 \u4e07 \u3002\u670d\u52a1\u7aef\u6709 1000 \u591a\u4e2a Redis  \u5b9e\u4f8b\uff0c100+ \u96c6\u7fa4\uff0c\u6bcf\u4e2a\u5b9e\u4f8b\u7684\u5185\u5b58\u63a7\u5236\u5728 20G \u4ee5\u4e0b\u3002<\/p>\n

KV \u7f13\u5b58<\/span><\/strong><\/p>\n

\u7b2c\u4e00\u4e2a\u662f\u6700\u57fa\u7840\uff0c\u4e5f\u662f\u6700\u5e38\u7528\u7684\u5c31\u662f KV \u529f\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u7528 Redis \u6765\u7f13\u5b58\u7528\u6237\u4fe1\u606f\u3001\u4f1a\u8bdd\u4fe1\u606f\u3001\u5546\u54c1\u4fe1\u606f\u7b49\u7b49\u3002<\/p>\n

\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u5c31\u662f\u901a\u7528\u7684\u7f13\u5b58\u8bfb\u53d6\u903b\u8f91\uff1a<\/p>\n<\/p>\n

def get_user(user_id): \r\n    user = redis.get(user_id) \r\n    if not user: \r\n        user = db.get(user_id) \r\n        redis.setex(user_id, ttl, user)  \/\/ \u8bbe\u7f6e\u7f13\u5b58\u8fc7\u671f\u65f6\u95f4 \r\n    return user \r\ndef save_user(user): \r\n    redis.setex(user.id, ttl, user)  \/\/ \u8bbe\u7f6e\u7f13\u5b58\u8fc7\u671f\u65f6\u95f4 \r\n    db.save_async(user)  \/\/ \u5f02\u6b65\u5199\u6570\u636e\u5e93<\/pre>\n<\/p>\n
\u8fd9\u4e2a\u8fc7\u671f\u65f6\u95f4\u975e\u5e38\u91cd\u8981\uff0c\u5b83\u901a\u5e38\u4f1a\u548c\u7528\u6237\u7684\u5355\u6b21\u4f1a\u8bdd\u957f\u5ea6\u6210\u6b63\u6bd4\uff0c\u4fdd\u8bc1\u7528\u6237\u5728\u5355\u6b21\u4f1a\u8bdd\u5185\u5c3d\u91cf\u4e00\u76f4\u53ef\u4ee5\u4f7f\u7528\u7f13\u5b58\u91cc\u9762\u7684\u6570\u636e\u3002<\/p>\n
\u5f53\u7136\u5982\u679c\u8d35\u516c\u53f8\u8d22\u529b\u96c4\u539a\uff0c\u53c8\u6781\u5176\u6ce8\u91cd\u6027\u80fd\u4f53\u9a8c\uff0c\u53ef\u4ee5\u5c06\u65f6\u95f4\u8bbe\u7f6e\u7684\u957f\u70b9\u751a\u81f3\u5e72\u8106\u5c31\u4e0d\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002\u5f53\u6570\u636e\u91cf\u4e0d\u65ad\u589e\u957f\u65f6\uff0c\u5c31\u4f7f\u7528 Codis \u6216\u8005  Redis-Cluster \u96c6\u7fa4\u6765\u6269\u5bb9\u3002<\/p>\n
\u9664\u6b64\u4e4b\u5916 Redis \u8fd8\u63d0\u4f9b\u4e86\u7f13\u5b58\u6a21\u5f0f\uff0cSet \u6307\u4ee4\u4e0d\u5fc5\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5b83\u4e5f\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u952e\u503c\u5bf9\u6309\u7167\u4e00\u5b9a\u7684\u7b56\u7565\u8fdb\u884c\u6dd8\u6c70\u3002<\/p>\n
\u6253\u5f00\u7f13\u5b58\u6a21\u5f0f\u7684\u6307\u4ee4\u662f\uff1aconfig set maxmemory 20gb \uff0c\u8fd9\u6837\u5f53\u5185\u5b58\u8fbe\u5230 20GB \u65f6\uff0cRedis  \u5c31\u4f1a\u5f00\u59cb\u6267\u884c\u6dd8\u6c70\u7b56\u7565\uff0c\u7ed9\u65b0\u6765\u7684\u952e\u503c\u5bf9\u817e\u51fa\u7a7a\u95f4\u3002<\/p>\n
\u8fd9\u4e2a\u7b56\u7565 Redis \u4e5f\u662f\u63d0\u4f9b\u4e86\u5f88\u591a\u79cd\uff0c\u603b\u7ed3\u8d77\u6765\u8fd9\u4e2a\u7b56\u7565\u5206\u4e3a\u4e24\u5757\uff1a\u5212\u5b9a\u6dd8\u6c70\u8303\u56f4\uff0c\u9009\u62e9\u6dd8\u6c70\u7b97\u6cd5\u3002<\/p>\n
\u6bd4\u5982\u6211\u4eec\u7ebf\u4e0a\u4f7f\u7528\u7684\u7b56\u7565\u662f Allkeys-lru\u3002\u8fd9\u4e2a Allkeys \u8868\u793a\u5bf9 Redis \u5185\u90e8\u6240\u6709\u7684 Key \u90fd\u6709\u53ef\u80fd\u88ab\u6dd8\u6c70\uff0c\u4e0d\u7ba1\u5b83\u6709\u6ca1\u6709\u5e26\u8fc7\u671f\u65f6\u95f4\uff0c\u800c  Volatile \u53ea\u6dd8\u6c70\u5e26\u8fc7\u671f\u65f6\u95f4\u7684\u3002<\/p>\n
Redis \u7684\u6dd8\u6c70\u529f\u80fd\u5c31\u597d\u6bd4\u4f01\u4e1a\u9047\u5230\u7ecf\u6d4e\u5bd2\u51ac\u65f6\u9700\u8981\u52d2\u7d27\u88e4\u8170\u5e26\u8fc7\u51ac\u8fdb\u884c\u4e00\u8f6e\u6b8b\u9177\u7684\u4eba\u624d\u4f18\u5316\u3002<\/p>\n
\u5b83\u4f1a\u9009\u62e9\u53ea\u4f18\u5316\u4e34\u65f6\u5de5\u5462\uff0c\u8fd8\u662f\u6240\u6709\u4eba\u4e00\u5f8b\u5e73\u7b49\u90fd\u53ef\u80fd\u88ab\u4f18\u5316\u3002\u5f53\u8fd9\u4e2a\u8303\u56f4\u5708\u5b9a\u4e4b\u540e\uff0c\u4f1a\u4ece\u4e2d\u9009\u51fa\u82e5\u5e72\u4e2a\u540d\u989d\uff0c\u600e\u4e48\u9009\u62e9\u5462\uff0c\u8fd9\u4e2a\u5c31\u662f\u6dd8\u6c70\u7b97\u6cd5\u3002<\/p>\n
\u6700\u5e38\u7528\u7684\u5c31\u662f LRU \u7b97\u6cd5\uff0c\u5b83\u6709\u4e00\u4e2a\u5f31\u70b9\uff0c\u90a3\u5c31\u662f\u8868\u9762\u529f\u592b\u505a\u5f97\u597d\u7684\u4eba\u53ef\u4ee5\u9003\u8fc7\u4f18\u5316\u3002<\/p>\n
\u6bd4\u5982\u4f60\u4e58\u673a\u8d76\u7d27\u5728\u8001\u677f\u9762\u524d\u597d\u597d\u8868\u73b0\u4e00\u4e0b\uff0c\u7136\u540e\u4f60\u5c31\u5b89\u5168\u4e86\u3002\u6240\u4ee5\u5230\u4e86 Redis 4.0 \u91cc\u9762\u5f15\u5165\u4e86 LFU  \u7b97\u6cd5\uff0c\u8981\u5bf9\u5e73\u65f6\u7684\u6210\u7ee9\u4e5f\u8fdb\u884c\u8003\u6838\uff0c\u53ea\u505a\u8868\u9762\u529f\u592b\u5c31\u5df2\u7ecf\u4e0d\u591f\u7528\u4e86\uff0c\u8fd8\u8981\u770b\u4f60\u5e73\u65f6\u52e4\u4e0d\u52e4\u5feb\u3002<\/p>\n
\u6700\u540e\u8fd8\u6709\u4e00\u79cd\u6781\u4e0d\u5e38\u7528\u7684\u7b97\u6cd5\uff1a\u968f\u673a\u6447\u53f7\u7b97\u6cd5\u3002\u8fd9\u4e2a\u7b97\u6cd5\u6709\u53ef\u80fd\u4f1a\u628a CEO \u4e5f\u7ed9\u6dd8\u6c70\u4e86\uff0c\u6240\u4ee5\u4e00\u822c\u4e0d\u4f1a\u4f7f\u7528\u5b83\u3002<\/p>\n
\u5206\u5e03\u5f0f\u9501<\/span><\/strong><\/p>\n
\u4e0b\u9762\u6211\u4eec\u770b\u7b2c\u4e8c\u4e2a\u529f\u80fd\uff1a\u5206\u5e03\u5f0f\u9501\uff0c\u8fd9\u4e2a\u662f\u9664\u4e86 KV \u7f13\u5b58\u4e4b\u5916\u6700\u4e3a\u5e38\u7528\u7684\u53e6\u4e00\u4e2a\u7279\u8272\u529f\u80fd\u3002<\/p>\n
\u6bd4\u5982\u4e00\u4e2a\u5f88\u80fd\u5e72\u7684\u8d44\u6df1\u5de5\u7a0b\u5e08\uff0c\u5f00\u53d1\u6548\u7387\u5f88\u5feb\uff0c\u4ee3\u7801\u8d28\u91cf\u4e5f\u5f88\u9ad8\uff0c\u662f\u56e2\u961f\u91cc\u7684\u660e\u661f\u3002\u6240\u4ee5\u8bf8\u591a\u4ea7\u54c1\u7ecf\u7406\u90fd\u8981\u6765\u70e6\u4ed6\uff0c\u8ba9\u4ed6\u7ed9\u81ea\u5df1\u505a\u9700\u6c42\u3002<\/p>\n
\u5982\u679c\u540c\u4e00\u65f6\u95f4\u6765\u4e86\u4e00\u5806\u4ea7\u54c1\u7ecf\u7406\u90fd\u627e\u4ed6\uff0c\u4ed6\u7684\u601d\u8def\u5462\u5c31\u4f1a\u9677\u5165\u6df7\u4e71\uff0c\u518d\u4f18\u79c0\u7684\u7a0b\u5e8f\u5458\uff0c\u5927\u8111\u7684\u5e76\u53d1\u80fd\u529b\u4e5f\u597d\u4e0d\u5230\u54ea\u91cc\u53bb\u3002<\/p>\n
\u6240\u4ee5\u4ed6\u5c31\u5728\u81ea\u5df1\u7684\u529e\u516c\u5ba4\u7684\u95e8\u628a\u4e0a\u6302\u4e86\u4e00\u4e2a\u8bf7\u52ff\u6253\u6270\u7684\u724c\u5b50\uff0c\u5f53\u4e00\u4e2a\u4ea7\u54c1\u7ecf\u7406\u6765\u7684\u65f6\u5019\u5148\u770b\u770b\u95e8\u628a\u4e0a\u6709\u6ca1\u6709\u8fd9\u4e2a\u724c\u5b50\uff0c\u5982\u679c\u6ca1\u6709\u5462\u5c31\u53ef\u4ee5\u8fdb\u6765\u627e\u5de5\u7a0b\u5e08\u8c08\u9700\u6c42\uff0c\u8c08\u4e4b\u524d\u8981\u628a\u724c\u5b50\u6302\u8d77\u6765\uff0c\u8c08\u5b8c\u4e86\u518d\u628a\u724c\u5b50\u6458\u4e86\u3002<\/p>\n
\u8fd9\u6837\u5176\u4ed6\u4ea7\u54c1\u7ecf\u7406\u4e5f\u8981\u6765\u70e6\u4ed6\u7684\u65f6\u5019\uff0c\u5982\u679c\u770b\u89c1\u8fd9\u4e2a\u724c\u5b50\u6302\u5728\u90a3\u91cc\uff0c\u5c31\u53ef\u4ee5\u9009\u62e9\u7761\u89c9\u7b49\u5f85\u6216\u8005\u662f\u5148\u53bb\u5fd9\u522b\u7684\u4e8b\u3002\u5982\u662f\u8fd9\u4f4d\u660e\u661f\u5de5\u7a0b\u5e08\u4ece\u6b64\u83b7\u5f97\u4e86\u5b89\u5b81\u3002<\/p>\n<\/p>\n
 <\/p>\n<\/p>\n
\u8fd9\u4e2a\u5206\u5e03\u5f0f\u9501\u7684\u4f7f\u7528\u65b9\u5f0f\u975e\u5e38\u7b80\u5355\uff0c\u5c31\u662f\u4f7f\u7528 Set \u6307\u4ee4\u7684\u6269\u5c55\u53c2\u6570\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
set lock:$user_id owner_id nx ex=5 \r\nif redis.call(\"get\", KEYS[1]) == ARGV[1] then \r\n    return redis.call(\"del\", KEYS[1]) \r\nelse \r\n    return 0 \r\nend \r\ndel_if_equals lock:$user_id owner_id<\/pre>\n<\/p>\n
\u4e00\u5b9a\u8981\u8bbe\u7f6e\u8fd9\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u56e0\u4e3a\u9047\u5230\u7279\u6b8a\u60c5\u51b5\uff0c\u6bd4\u5982\u5730\u9707(\u8fdb\u7a0b\u88ab Kill  -9\uff0c\u6216\u8005\u673a\u5668\u5b95\u673a)\uff0c\u4ea7\u54c1\u7ecf\u7406\u53ef\u80fd\u4f1a\u9009\u62e9\u4ece\u7a97\u6237\u4e0a\u8df3\u4e0b\u53bb\uff0c\u6ca1\u673a\u4f1a\u6458\u724c\uff0c\u5bfc\u81f4\u4e86\u6b7b\u9501\u9965\u997f\uff0c\u8ba9\u8fd9\u4f4d\u4f18\u79c0\u7684\u5de5\u7a0b\u5e08\u6210\u4e86\u4e00\u4f4d\u5927\u95f2\u4eba\uff0c\u9020\u6210\u4e25\u91cd\u7684\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n
\u540c\u65f6\u8fd8\u9700\u8981\u6ce8\u610f\u8fd9\u4e2a owner_id\uff0c\u5b83\u4ee3\u8868\u9501\u662f\u8c01\u52a0\u7684\uff0c\u4ea7\u54c1\u7ecf\u7406\u7684\u5de5\u53f7\u3002\u4ee5\u514d\u4f60\u7684\u9501\u4e0d\u5c0f\u5fc3\u88ab\u522b\u4eba\u6458\u6389\u4e86\u3002<\/p>\n
\u91ca\u653e\u9501\u65f6\u8981\u5339\u914d\u8fd9\u4e2a owner_id\uff0c\u5339\u914d\u6210\u529f\u4e86\u624d\u80fd\u91ca\u653e\u9501\u3002\u8fd9\u4e2a owner_id \u901a\u5e38\u662f\u4e00\u4e2a\u968f\u673a\u6570\uff0c\u5b58\u653e\u5728 ThreadLocal  \u53d8\u91cf\u91cc(\u6808\u53d8\u91cf)\u3002<\/p>\n
\u5b98\u65b9\u5176\u5b9e\u5e76\u4e0d\u63a8\u8350\u8fd9\u79cd\u65b9\u5f0f\uff0c\u56e0\u4e3a\u5b83\u5728\u96c6\u7fa4\u6a21\u5f0f\u4e0b\u4f1a\u4ea7\u751f\u9501\u4e22\u5931\u7684\u95ee\u9898\uff0c\u5728\u4e3b\u4ece\u53d1\u751f\u5207\u6362\u7684\u65f6\u5019\u3002<\/p>\n
\u5b98\u65b9\u63a8\u8350\u7684\u5206\u5e03\u5f0f\u9501\u53eb RedLock\uff0c\u4f5c\u8005\u8ba4\u4e3a\u8fd9\u4e2a\u7b97\u6cd5\u8f83\u4e3a\u5b89\u5168\uff0c\u63a8\u8350\u6211\u4eec\u4f7f\u7528\u3002<\/p>\n
\u4e0d\u8fc7\u638c\u9605\u8fd9\u8fb9\u4e00\u76f4\u8fd8\u4f7f\u7528\u4e0a\u9762\u6700\u7b80\u5355\u7684\u5206\u5e03\u5f0f\u9501\uff0c\u4e3a\u4ec0\u4e48\u6211\u4eec\u4e0d\u53bb\u4f7f\u7528 RedLock \u5462?\u56e0\u4e3a\u5b83\u7684\u8fd0\u7ef4\u6210\u672c\u4f1a\u9ad8\u4e00\u4e9b\uff0c\u9700\u8981 3 \u53f0\u4ee5\u4e0a\u72ec\u7acb\u7684 Redis  \u5b9e\u4f8b\uff0c\u7528\u8d77\u6765\u8981\u7e41\u7410\u4e00\u4e9b\u3002<\/p>\n
\u53e6\u5916 Redis  \u96c6\u7fa4\u53d1\u751f\u4e3b\u4ece\u5207\u6362\u7684\u6982\u7387\u4e5f\u5e76\u4e0d\u9ad8\uff0c\u5373\u4f7f\u53d1\u751f\u4e86\u4e3b\u4ece\u5207\u6362\u51fa\u73b0\u9501\u4e22\u5931\u7684\u6982\u7387\u4e5f\u5f88\u4f4e\uff0c\u56e0\u4e3a\u4e3b\u4ece\u5207\u6362\u5f80\u5f80\u90fd\u6709\u4e00\u4e2a\u8fc7\u7a0b\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u7684\u65f6\u95f4\u901a\u5e38\u4f1a\u8d85\u8fc7\u9501\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u4e5f\u5c31\u4e0d\u4f1a\u53d1\u751f\u9501\u7684\u5f02\u5e38\u4e22\u5931\u3002<\/p>\n
\u8fd8\u6709\u5c31\u662f\u5206\u5e03\u5f0f\u9501\u9047\u5230\u9501\u51b2\u7a81\u7684\u673a\u4f1a\u4e5f\u4e0d\u591a\uff0c\u8fd9\u6b63\u5982\u4e00\u4e2a\u516c\u53f8\u91cc\u660e\u661f\u7a0b\u5e8f\u5458\u4e5f\u6bd4\u8f83\u6709\u9650\u4e00\u6837\uff0c\u603b\u662f\u9047\u5230\u9501\u6392\u961f\u90a3\u8bf4\u660e\u7ed3\u6784\u4e0a\u9700\u8981\u4f18\u5316\u3002<\/p>\n
\u5ef6\u65f6\u961f\u5217<\/span><\/strong><\/p>\n
\u4e0b\u9762\u6211\u4eec\u7ee7\u7eed\u770b\u7b2c\u4e09\u4e2a\u529f\u80fd\uff0c\u5ef6\u65f6\u961f\u5217\u3002\u524d\u9762\u6211\u4eec\u63d0\u5230\u4ea7\u54c1\u7ecf\u7406\u5728\u9047\u5230\u300c\u8bf7\u52ff\u6253\u6270\u300d\u7684\u724c\u5b50\u65f6\u53ef\u4ee5\u9009\u62e9\u591a\u79cd\u7b56\u7565\uff1a<\/p>\n
    \n
  • \n
    \u5e72\u7b49\u5f85<\/strong><\/p>\n<\/li>\n
  • \n
    \u7761\u89c9<\/strong><\/p>\n<\/li>\n
  • \n
    \u653e\u5f03\u4e0d\u5e72\u4e86<\/strong><\/p>\n<\/li>\n
  • \n
    \u6b47\u4e00\u4f1a\u518d\u5e72<\/strong><\/p>\n<\/li>\n<\/ul>\n
    \u5e72\u7b49\u5f85\uff1a\u5c31\u662f Spinlock\uff0c\u8fd9\u4f1a\u70e7 CPU\uff0c\u98d9\u9ad8 Redis \u7684 QPS\u3002<\/p>\n
    \u7761\u89c9\uff1a\u5c31\u662f\u5148 Sleep \u4e00\u4f1a\u518d\u8bd5\uff0c\u8fd9\u4f1a\u6d6a\u8d39\u7ebf\u7a0b\u8d44\u6e90\uff0c\u8fd8\u4f1a\u589e\u52a0\u54cd\u5e94\u65f6\u957f\u3002<\/p>\n
    \u653e\u5f03\u4e0d\u5e72\u4e86\uff1a\u5c31\u662f\u544a\u77e5\u524d\u7aef\u7528\u6237\u5f85\u4f1a\u518d\u8bd5\uff0c\u73b0\u5728\u7cfb\u7edf\u538b\u529b\u5927\u6709\u70b9\u5fd9\uff0c\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n
    \u6700\u540e\u4e00\u79cd\u5c31\u662f\u73b0\u5728\u8981\u8bb2\u7684\u7b56\u7565\u5f85\u4f1a\u518d\u6765\uff1a\u8fd9\u662f\u5728\u73b0\u5b9e\u4e16\u754c\u91cc\u6700\u666e\u904d\u7684\u7b56\u7565\u3002<\/p>\n
    \u8fd9\u79cd\u7b56\u7565\u4e00\u822c\u7528\u5728\u6d88\u606f\u961f\u5217\u7684\u6d88\u8d39\u4e2d\uff0c\u8fd9\u4e2a\u65f6\u5019\u9047\u5230\u9501\u51b2\u7a81\u8be5\u600e\u4e48\u529e?\u4e0d\u80fd\u629b\u5f03\u4e0d\u5904\u7406\uff0c\u4e5f\u4e0d\u9002\u5408\u7acb\u5373\u91cd\u8bd5(Spinlock)\uff0c\u8fd9\u65f6\u5c31\u53ef\u4ee5\u5c06\u6d88\u606f\u6254\u8fdb\u5ef6\u65f6\u961f\u5217\uff0c\u8fc7\u4e00\u4f1a\u518d\u5904\u7406\u3002<\/p>\n<\/p>\n
     <\/p>\n<\/p>\n
    \u6709\u5f88\u591a\u4e13\u4e1a\u7684\u6d88\u606f\u4e2d\u95f4\u4ef6\u652f\u6301\u5ef6\u65f6\u6d88\u606f\u529f\u80fd\uff0c\u6bd4\u5982 RabbitMQ \u548c NSQ\u3002Redis \u4e5f\u53ef\u4ee5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Zset \u6765\u5b9e\u73b0\u8fd9\u4e2a\u5ef6\u65f6\u961f\u5217\u3002<\/p>\n
    Zset \u91cc\u9762\u5b58\u50a8\u7684\u662f Value\/Score \u952e\u503c\u5bf9\uff0c\u6211\u4eec\u5c06 Value \u5b58\u50a8\u4e3a\u5e8f\u5217\u5316\u7684\u4efb\u52a1\u6d88\u606f\uff0cScore  \u5b58\u50a8\u4e3a\u4e0b\u4e00\u6b21\u4efb\u52a1\u6d88\u606f\u8fd0\u884c\u7684\u65f6\u95f4(Deadline)\uff0c\u7136\u540e\u8f6e\u8be2 Zset \u4e2d Score \u503c\u5927\u4e8e Now \u7684\u4efb\u52a1\u6d88\u606f\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<\/p>\n
    zadd(queue-key, now_ts+5, task_json) \r\nwhile True: \r\n  task_json = zrevrangebyscore(queue-key, now_ts, 0, 0, 1) \r\n  if task_json: \r\n    grabbed_ok = zrem(queue-key, task_json) \r\n    if grabbed_ok: \r\n      process_task(task_json) \r\n  else: \r\n    sleep(1000)  \/\/ \u6b47 1s<\/pre>\n<\/p>\n
    \u5f53\u6d88\u8d39\u8005\u662f\u591a\u7ebf\u7a0b\u6216\u8005\u591a\u8fdb\u7a0b\u7684\u65f6\u5019\uff0c\u8fd9\u91cc\u4f1a\u5b58\u5728\u7ade\u4e89\u6d6a\u8d39\u95ee\u9898\u3002\u5f53\u524d\u7ebf\u7a0b\u660e\u660e\u5c06 task_json \u4ece Zset \u4e2d\u8f6e\u8be2\u51fa\u6765\u4e86\uff0c\u4f46\u662f\u901a\u8fc7 Zrem  \u6765\u4e89\u62a2\u65f6\u5374\u62a2\u4e0d\u5230\u624b\u3002<\/p>\n
    \u8fd9\u65f6\u5c31\u53ef\u4ee5\u4f7f\u7528 LUA \u811a\u672c\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5c06\u8f6e\u8be2\u548c\u4e89\u62a2\u64cd\u4f5c\u539f\u5b50\u5316\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u907f\u514d\u7ade\u4e89\u6d6a\u8d39\u3002<\/p>\n<\/p>\n
    local res = nil \r\nlocal tasks = redis.pcall(\"zrevrangebyscore\", KEYS[1], ARGV[1], 0, \"LIMIT\", 0, 1) \r\nif #tasks > 0 then \r\n  local ok = redis.pcall(\"zrem\", KEYS[1], tasks[1]) \r\n  if ok > 0 then \r\n    res = tasks[1]  \r\n  end \r\nend \r\nreturn res<\/pre>\n<\/p>\n
    \u4e3a\u4ec0\u4e48\u6211\u8981\u5c06\u5206\u5e03\u5f0f\u9501\u548c\u5ef6\u65f6\u961f\u5217\u4e00\u8d77\u8bb2\u5462\uff0c\u56e0\u4e3a\u5f88\u65e9\u7684\u65f6\u5019\u7ebf\u4e0a\u51fa\u4e86\u4e00\u6b21\u6545\u969c\u3002<\/p>\n
    \u6545\u969c\u53d1\u751f\u65f6\u7ebf\u4e0a\u7684\u67d0\u4e2a Redis \u961f\u5217\u957f\u5ea6\u7206\u8868\u4e86\uff0c\u5bfc\u81f4\u5f88\u591a\u5f02\u6b65\u4efb\u52a1\u5f97\u4e0d\u5230\u6267\u884c\uff0c\u4e1a\u52a1\u6570\u636e\u51fa\u73b0\u4e86\u95ee\u9898\u3002<\/p>\n
    \u540e\u6765\u67e5\u6e05\u695a\u539f\u56e0\u4e86\uff0c\u5c31\u662f\u56e0\u4e3a\u5206\u5e03\u5f0f\u9501\u6ca1\u6709\u7528\u597d\u5bfc\u81f4\u4e86\u6b7b\u9501\uff0c\u800c\u4e14\u9047\u5230\u52a0\u9501\u5931\u8d25\u65f6\u5c31 Sleep  \u65e0\u9650\u91cd\u8bd5\u7ed3\u679c\u5c31\u5bfc\u81f4\u4e86\u5f02\u6b65\u4efb\u52a1\u5f7b\u5e95\u8fdb\u5165\u4e86\u7761\u7720\u72b6\u6001\u4e0d\u80fd\u5904\u7406\u4efb\u52a1\u3002<\/p>\n
    \u90a3\u8fd9\u4e2a\u5206\u5e03\u5f0f\u9501\u5f53\u65f6\u662f\u600e\u4e48\u7528\u7684\u5462?\u7528\u7684\u5c31\u662f Setnx+Expire\uff0c\u7ed3\u679c\u5728\u670d\u52a1\u5347\u7ea7\u7684\u65f6\u5019\u505c\u6b62\u8fdb\u7a0b\u76f4\u63a5\u5c31\u5bfc\u81f4\u4e86\u4e2a\u522b\u8bf7\u6c42\u6267\u884c\u4e86 Setnx\uff0c\u4f46\u662f Expire  \u6ca1\u6709\u5f97\u5230\u6267\u884c\uff0c\u4e8e\u662f\u5c31\u5e26\u6765\u4e86\u4e2a\u522b\u7528\u6237\u7684\u6b7b\u9501\u3002<\/p>\n
    \u4f46\u662f\u540e\u53f0\u5462\u53c8\u6709\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u5904\u7406\uff0c\u4e5f\u9700\u8981\u5bf9\u7528\u6237\u52a0\u9501\uff0c\u52a0\u9501\u5931\u8d25\u5c31\u4f1a\u65e0\u9650 Sleep \u91cd\u8bd5\uff0c\u90a3\u4e48\u4e00\u65e6\u649e\u4e0a\u4e86\u524d\u9762\u7684\u6b7b\u9501\u7528\u6237\uff0c\u8fd9\u4e2a\u5f02\u6b65\u7ebf\u7a0b\u5c31\u5f7b\u5e95\u7184\u706b\u4e86\u3002<\/p>\n
    \u56e0\u4e3a\u8fd9\u6b21\u4e8b\u6545\u6211\u4eec\u624d\u6709\u4e86\u4eca\u5929\u7684\u6b63\u786e\u7684\u5206\u5e03\u5f0f\u9501\u5f62\u5f0f\u4ee5\u53ca\u5ef6\u65f6\u961f\u5217\u7684\u53d1\u660e\uff0c\u8fd8\u6709\u5c31\u662f\u4f18\u96c5\u505c\u673a\uff0c\u56e0\u4e3a\u5982\u679c\u5b58\u5728\u4f18\u96c5\u505c\u673a\u7684\u903b\u8f91\uff0c\u90a3\u4e48\u670d\u52a1\u5347\u7ea7\u5c31\u4e0d\u4f1a\u5bfc\u81f4\u8bf7\u6c42\u53ea\u6267\u884c\u4e86\u4e00\u534a\u5c31\u88ab\u6253\u65ad\u4e86\uff0c\u9664\u975e\u662f\u8fdb\u7a0b\u88ab  Kill -9 \u6216\u8005\u662f\u5b95\u673a\u3002<\/p>\n
    \u5b9a\u65f6\u4efb\u52a1<\/span><\/strong><\/p>\n
    \u5206\u5e03\u5f0f\u5b9a\u65f6\u4efb\u52a1\u6709\u591a\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff0c\u6700\u5e38\u89c1\u7684\u4e00\u79cd\u662f Master-Workers \u6a21\u578b\u3002<\/p>\n
    Master \u8d1f\u8d23\u7ba1\u7406\u65f6\u95f4\uff0c\u5230\u70b9\u4e86\u5c31\u5c06\u4efb\u52a1\u6d88\u606f\u6254\u5230\u6d88\u606f\u4e2d\u95f4\u4ef6\u91cc\uff0c\u7136\u540e Worker \u4eec\u8d1f\u8d23\u76d1\u542c\u8fd9\u4e9b\u6d88\u606f\u961f\u5217\u6765\u6d88\u8d39\u6d88\u606f\u3002<\/p>\n
    \u8457\u540d\u7684 Python \u5b9a\u65f6\u4efb\u52a1\u6846\u67b6 Celery \u5c31\u662f\u8fd9\u4e48\u5e72\u7684\u3002\u4f46\u662f Celery \u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u90a3\u5c31\u662f Master \u662f\u5355\u70b9\u7684\uff0c\u5982\u679c\u8fd9\u4e2a Master  \u6302\u4e86\uff0c\u6574\u4e2a\u5b9a\u65f6\u4efb\u52a1\u7cfb\u7edf\u5c31\u505c\u6b62\u5de5\u4f5c\u4e86\u3002<\/p>\n<\/p>\n
    \u53e6\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\u662f Multi-Master \u6a21\u578b\u3002\u8fd9\u4e2a\u6a21\u578b\u4ec0\u4e48\u610f\u601d\u5462\uff0c\u5c31\u7c7b\u4f3c\u4e8e Java \u91cc\u9762\u7684 Quartz \u6846\u67b6\uff0c\u91c7\u7528\u6570\u636e\u5e93\u9501\u6765\u63a7\u5236\u4efb\u52a1\u5e76\u53d1\u3002<\/p>\n
    \u4f1a\u6709\u591a\u4e2a\u8fdb\u7a0b\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u7ba1\u7406\u65f6\u95f4\uff0c\u65f6\u95f4\u5230\u4e86\u5c31\u4f7f\u7528\u6570\u636e\u5e93\u9501\u6765\u4e89\u62a2\u4efb\u52a1\u6267\u884c\u6743\uff0c\u62a2\u5230\u7684\u8fdb\u7a0b\u5c31\u83b7\u5f97\u4e86\u4efb\u52a1\u6267\u884c\u7684\u673a\u4f1a\uff0c\u7136\u540e\u5c31\u5f00\u59cb\u6267\u884c\u4efb\u52a1\uff0c\u8fd9\u6837\u5c31\u89e3\u51b3\u4e86  Master \u7684\u5355\u70b9\u95ee\u9898\u3002<\/p>\n
    \u8fd9\u79cd\u6a21\u578b\u6709\u4e00\u4e2a\u7f3a\u70b9\uff0c\u90a3\u5c31\u662f\u4f1a\u9020\u6210\u7ade\u4e89\u6d6a\u8d39\u95ee\u9898\uff0c\u4e0d\u8fc7\u901a\u5e38\u5927\u591a\u6570\u4e1a\u52a1\u7cfb\u7edf\u7684\u5b9a\u65f6\u4efb\u52a1\u5e76\u6ca1\u6709\u90a3\u4e48\u591a\uff0c\u6240\u4ee5\u8fd9\u79cd\u7ade\u4e89\u6d6a\u8d39\u5e76\u4e0d\u4e25\u91cd\u3002<\/p>\n
    \u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\u5b83\u4f9d\u8d56\u4e8e\u5206\u5e03\u5f0f\u673a\u5668\u65f6\u95f4\u7684\u4e00\u81f4\u6027\uff0c\u5982\u679c\u591a\u4e2a\u673a\u5668\u4e0a\u65f6\u95f4\u4e0d\u4e00\u81f4\u5c31\u4f1a\u9020\u6210\u4efb\u52a1\u88ab\u591a\u6b21\u6267\u884c\uff0c\u8fd9\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u6570\u636e\u5e93\u9501\u7684\u65f6\u95f4\u6765\u7f13\u89e3\u3002<\/p>\n<\/p>\n
    \u73b0\u5728\u6709\u4e86 Redis \u5206\u5e03\u5f0f\u9501\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u5728 Redis \u4e4b\u4e0a\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5b9a\u65f6\u4efb\u52a1\u6846\u67b6\uff1a<\/p>\n<\/p>\n
    hset tasks name trigger_rule \r\nhgetall tasks \r\nset lock:${name} true nx ex=5 \r\nset tasks_version $new_version \r\nget tasks_version<\/pre>\n<\/p>\n
    \u5982\u679c\u4f60\u89c9\u5f97 Quartz \u5185\u90e8\u7684\u4ee3\u7801\u590d\u6742\u7684\u8ba9\u4eba\u770b\u4e0d\u61c2\uff0c\u5206\u5e03\u5f0f\u6587\u6863\u53c8\u51e0\u4e4e\u6ca1\u6709\uff0c\u5f88\u96be\u6298\u817e\uff0c\u53ef\u4ee5\u8bd5\u8bd5 Redis\uff0c\u4f7f\u7528\u5b83\u4f1a\u8ba9\u4f60\u5c11\u6389\u70b9\u5934\u53d1\u3002<\/p>\n<\/p>\n
    Life is Short\uff0cI use Redis \r\nhttps:\/\/github.com\/pyloque\/taskino<\/pre>\n<\/p>\n
    \u9891\u7387\u63a7\u5236<\/span><\/strong><\/p>\n
    \u5982\u679c\u4f60\u505a\u8fc7\u793e\u533a\u5c31\u77e5\u9053\uff0c\u4e0d\u53ef\u907f\u514d\u603b\u662f\u4f1a\u9047\u5230\u5783\u573e\u5185\u5bb9\u3002\u4e00\u89c9\u9192\u6765\u4f60\u4f1a\u53d1\u73b0\u9996\u9875\u7a81\u7136\u4f1a\u88ab\u67d0\u4e9b\u83ab\u540d\u5176\u5999\u7684\u5e7f\u544a\u5e16\u5237\u5c4f\u4e86\u3002\u5982\u679c\u4e0d\u91c7\u53d6\u9002\u5f53\u7684\u673a\u5236\u6765\u63a7\u5236\u5c31\u4f1a\u5bfc\u81f4\u7528\u6237\u4f53\u9a8c\u53d7\u5230\u4e25\u91cd\u5f71\u54cd\u3002<\/p>\n
    \u63a7\u5236\u5e7f\u544a\u5783\u573e\u8d34\u7684\u7b56\u7565\u975e\u5e38\u591a\uff0c\u9ad8\u7ea7\u4e00\u70b9\u7684\u901a\u8fc7 AI\uff0c\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u662f\u901a\u8fc7\u5173\u952e\u8bcd\u626b\u63cf\u3002<\/p>\n
    \u8fd8\u6709\u6bd4\u8f83\u5e38\u7528\u7684\u4e00\u79cd\u65b9\u5f0f\u5c31\u662f\u9891\u7387\u63a7\u5236\uff0c\u9650\u5236\u5355\u4e2a\u7528\u6237\u5185\u5bb9\u751f\u4ea7\u901f\u5ea6\uff0c\u4e0d\u540c\u7b49\u7ea7\u7684\u7528\u6237\u4f1a\u6709\u4e0d\u540c\u7684\u9891\u7387\u63a7\u5236\u53c2\u6570\u3002<\/p>\n
    \u9891\u7387\u63a7\u5236\u5c31\u53ef\u4ee5\u4f7f\u7528 Redis  \u6765\u5b9e\u73b0\uff0c\u6211\u4eec\u5c06\u7528\u6237\u7684\u884c\u4e3a\u7406\u89e3\u4e3a\u4e00\u4e2a\u65f6\u95f4\u5e8f\u5217\uff0c\u6211\u4eec\u8981\u4fdd\u8bc1\u5728\u4e00\u5b9a\u7684\u65f6\u95f4\u5185\u9650\u5236\u5355\u4e2a\u7528\u6237\u7684\u65f6\u95f4\u5e8f\u5217\u7684\u957f\u5ea6\uff0c\u8d85\u8fc7\u4e86\u8fd9\u4e2a\u957f\u5ea6\u5c31\u7981\u6b62\u7528\u6237\u7684\u884c\u4e3a\u3002<\/p>\n
    \u5b83\u53ef\u4ee5\u662f\u7528 Redis \u7684 Zset \u6765\u5b9e\u73b0\uff1a<\/p>\n<\/p>\n
    \u56fe\u4e2d\u7eff\u8272\u7684\u90e8\u5206\u5c31\u662f\u6211\u4eec\u8981\u4fdd\u7559\u7684\u4e00\u4e2a\u65f6\u95f4\u6bb5\u7684\u65f6\u95f4\u5e8f\u5217\u4fe1\u606f\uff0c\u7070\u8272\u7684\u6bb5\u4f1a\u88ab\u780d\u6389\u3002\u7edf\u8ba1\u7eff\u8272\u6bb5\u4e2d\u65f6\u95f4\u5e8f\u5217\u8bb0\u5f55\u7684\u4e2a\u6570\u5c31\u77e5\u9053\u662f\u5426\u8d85\u8fc7\u4e86\u9891\u7387\u7684\u9608\u503c\u3002<\/p>\n<\/p>\n
    # \u4e0b\u9762\u7684\u4ee3\u7801\u63a7\u5236\u7528\u6237\u7684 ugc \u884c\u4e3a\u4e3a\u6bcf\u5c0f\u65f6\u6700\u591a N \u6b21 \r\nhist_key = \"ugc:${user_id}\" \r\nwith redis.pipeline() as pipe: \r\n  pipe.zadd(hist_key, ts, uuid) \r\n  # \u4fdd\u75591\u5c0f\u65f6\u5185\u7684\u884c\u4e3a\u5e8f\u5217 \r\n  pipe.zremrangebyscore(hist_key, 0, now_ts - 3600) \r\n  # \u83b7\u53d6\u8fd91\u5c0f\u65f6\u5185\u7684\u884c\u4e3a\u6570\u91cf \r\n  pipe.zcard(hist_key) \r\n  pipe.expire(hist_key, 3600) \r\n  _, _, count, _ = pipe.exec() \r\n  return count > N<\/pre>\n<\/p>\n
    \u670d\u52a1\u53d1\u73b0<\/span><\/strong><\/p>\n
    \u6280\u672f\u6210\u719f\u5ea6\u7a0d\u5fae\u9ad8\u4e00\u70b9\u7684\u4f01\u4e1a\u90fd\u4f1a\u6709\u670d\u52a1\u53d1\u73b0\u7684\u57fa\u7840\u8bbe\u65bd\u3002\u901a\u5e38\u6211\u4eec\u90fd\u4f1a\u9009\u7528 Zookeeper\u3001Etcd\u3001Consul  \u7b49\u5206\u5e03\u5f0f\u914d\u7f6e\u6570\u636e\u5e93\u6765\u4f5c\u4e3a\u670d\u52a1\u5217\u8868\u7684\u5b58\u50a8\u3002<\/p>\n
    \u5b83\u4eec\u6709\u975e\u5e38\u53ca\u65f6\u7684\u901a\u77e5\u673a\u5236\u6765\u901a\u77e5\u670d\u52a1\u6d88\u8d39\u8005\u670d\u52a1\u5217\u8868\u53d1\u751f\u4e86\u53d8\u66f4\u3002\u90a3\u6211\u4eec\u8be5\u5982\u4f55\u4f7f\u7528 Redis \u6765\u505a\u670d\u52a1\u53d1\u73b0\u5462?<\/p>\n<\/p>\n
    \u8fd9\u91cc\u6211\u4eec\u8981\u518d\u6b21\u4f7f\u7528 Zset \u6570\u636e\u7ed3\u6784\uff0c\u6211\u4eec\u4f7f\u7528 Zset \u6765\u4fdd\u5b58\u5355\u4e2a\u670d\u52a1\u5217\u8868\u3002\u591a\u4e2a\u670d\u52a1\u5217\u8868\u5c31\u4f7f\u7528\u591a\u4e2a Zset \u6765\u5b58\u50a8\u3002<\/p>\n
    Zset \u7684 Value \u548c Score \u5206\u522b\u5b58\u50a8\u670d\u52a1\u7684\u5730\u5740\u548c\u5fc3\u8df3\u7684\u65f6\u95f4\u3002\u670d\u52a1\u63d0\u4f9b\u8005\u9700\u8981\u4f7f\u7528\u5fc3\u8df3\u6765\u6c47\u62a5\u81ea\u5df1\u7684\u5b58\u6d3b\uff0c\u6bcf\u9694\u51e0\u79d2\u8c03\u7528\u4e00\u6b21 Zadd\u3002<\/p>\n
    \u670d\u52a1\u63d0\u4f9b\u8005\u505c\u6b62\u670d\u52a1\u65f6\uff0c\u4f7f\u7528 Zrem \u6765\u79fb\u9664\u81ea\u5df1\u3002<\/p>\n<\/p>\n
    zadd service_key heartbeat_ts addr \r\nzrem service_key addr<\/pre>\n<\/p>\n
    \u8fd9\u6837\u8fd8\u4e0d\u591f\uff0c\u56e0\u4e3a\u670d\u52a1\u6709\u53ef\u80fd\u662f\u5f02\u5e38\u7ec8\u6b62\uff0c\u6839\u672c\u6ca1\u673a\u4f1a\u6267\u884c\u94a9\u5b50\uff0c\u6240\u4ee5\u9700\u8981\u4f7f\u7528\u4e00\u4e2a\u989d\u5916\u7684\u7ebf\u7a0b\u6765\u6e05\u7406\u670d\u52a1\u5217\u8868\u4e2d\u7684\u8fc7\u671f\u9879\uff1a<\/p>\n<\/p>\n
    zremrangebyscore service_key 0 now_ts - 30  # 30s \u90fd\u6ca1\u6765\u5fc3\u8df3<\/pre>\n<\/p>\n
    \u63a5\u4e0b\u6765\u8fd8\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u95ee\u9898\u662f\u5982\u4f55\u901a\u77e5\u6d88\u8d39\u8005\u670d\u52a1\u5217\u8868\u53d1\u751f\u4e86\u53d8\u66f4\uff0c\u8fd9\u91cc\u6211\u4eec\u540c\u6837\u4f7f\u7528\u7248\u672c\u53f7\u8f6e\u8be2\u673a\u5236\u3002<\/p>\n
    \u5f53\u670d\u52a1\u5217\u8868\u53d8\u66f4\u65f6\uff0c\u9012\u589e\u7248\u672c\u53f7\u3002\u6d88\u8d39\u8005\u901a\u8fc7\u8f6e\u8be2\u7248\u672c\u53f7\u7684\u53d8\u5316\u6765\u91cd\u52a0\u8f7d\u670d\u52a1\u5217\u8868\u3002<\/p>\n<\/p>\n
    if zadd() > 0 || zrem() > 0 || zremrangebyscore() > 0: \r\n  incr service_version_key<\/pre>\n<\/p>\n
    \u4f46\u662f\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u5982\u679c\u6d88\u8d39\u8005\u4f9d\u8d56\u4e86\u5f88\u591a\u7684\u670d\u52a1\u5217\u8868\uff0c\u90a3\u4e48\u5b83\u5c31\u9700\u8981\u8f6e\u8be2\u5f88\u591a\u7684\u7248\u672c\u53f7\uff0c\u8fd9\u6837\u7684 IO \u6548\u7387\u4f1a\u6bd4\u8f83\u4f4e\u4e0b\u3002<\/p>\n
    \u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u518d\u589e\u52a0\u4e00\u4e2a\u5168\u5c40\u7248\u672c\u53f7\uff0c\u5f53\u4efb\u610f\u7684\u670d\u52a1\u5217\u8868\u7248\u672c\u53f7\u53d1\u751f\u53d8\u66f4\u65f6\uff0c\u9012\u589e\u5168\u5c40\u7248\u672c\u53f7\u3002<\/p>\n
    \u8fd9\u6837\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\u6d88\u8d39\u8005\u53ea\u9700\u8981\u8f6e\u8be2\u5168\u5c40\u7248\u672c\u53f7\u5c31\u53ef\u4ee5\u4e86\u3002\u5f53\u5168\u5c40\u7248\u672c\u53f7\u53d1\u751f\u53d8\u66f4\u65f6\u518d\u6328\u4e2a\u6bd4\u5bf9\u4f9d\u8d56\u7684\u670d\u52a1\u5217\u8868\u7684\u5b50\u7248\u672c\u53f7\uff0c\u7136\u540e\u52a0\u8f7d\u6709\u53d8\u66f4\u7684\u670d\u52a1\u5217\u8868\uff1ahttps:\/\/github.com\/pyloque\/captain\u3002<\/p>\n<\/p>\n
    \u4f4d\u56fe<\/span><\/strong><\/p>\n
    \u638c\u9605\u7684\u7b7e\u5230\u7cfb\u7edf\u505a\u7684\u6bd4\u8f83\u65e9\uff0c\u5f53\u65f6\u7528\u6237\u91cf\u8fd8\u6ca1\u6709\u4e0a\u6765\uff0c\u8bbe\u8ba1\u4e0a\u6bd4\u8f83\u7b80\u5355\uff0c\u5c31\u662f\u5c06\u7528\u6237\u7684\u7b7e\u5230\u72b6\u6001\u7528 Redis \u7684 Hash \u7ed3\u6784\u6765\u5b58\u50a8\uff0c\u7b7e\u5230\u4e00\u6b21\u5c31\u5728 Hash  \u7ed3\u6784\u91cc\u8bb0\u5f55\u4e00\u6761\u3002<\/p>\n
    \u7b7e\u5230\u6709\u4e09\u79cd\u72b6\u6001\uff0c\u672a\u7b7e\u5230\u3001\u5df2\u7b7e\u5230\u548c\u8865\u7b7e\uff0c\u5206\u522b\u662f 0\u30011\u30012 \u4e09\u4e2a\u6574\u6570\u503c\uff1a<\/p>\n<\/p>\n
    hset sign:${user_id} 2019-01-01 1 \r\nhset sign:${user_id} 2019-01-02 1 \r\nhset sign:${user_id} 2019-01-03 2<\/pre>\n<\/p>\n
    \u8fd9\u975e\u5e38\u6d6a\u8d39\u7528\u6237\u7a7a\u95f4\uff0c\u5230\u540e\u6765\u7b7e\u5230\u65e5\u6d3b\u8fc7\u5343\u4e07\u7684\u65f6\u5019\uff0cRedis \u5b58\u50a8\u95ee\u9898\u5f00\u59cb\u51f8\u663e\uff0c\u76f4\u63a5\u5c06\u5185\u5b58\u98da\u5230\u4e86 30G+\uff0c\u6211\u4eec\u7ebf\u4e0a\u5b9e\u4f8b\u901a\u5e38\u8fc7\u4e86 20G \u5c31\u5f00\u59cb\u62a5\u8b66\uff0c30G  \u5df2\u7ecf\u5c5e\u4e8e\u4e25\u91cd\u8d85\u6807\u4e86\u3002<\/p>\n
    \u8fd9\u65f6\u5019\u6211\u4eec\u5c31\u5f00\u59cb\u7740\u624b\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53bb\u4f18\u5316\u5b58\u50a8\u3002\u6211\u4eec\u9009\u62e9\u4e86\u4f7f\u7528\u4f4d\u56fe\u6765\u8bb0\u5f55\u7b7e\u5230\u4fe1\u606f\uff0c\u4e00\u4e2a\u7b7e\u5230\u72b6\u6001\u9700\u8981\u4e24\u4e2a\u4f4d\u6765\u8bb0\u5f55\uff0c\u4e00\u4e2a\u6708\u7684\u5b58\u50a8\u7a7a\u95f4\u53ea\u9700\u8981 8 \u4e2a\u5b57\u8282\u3002<\/p>\n
    \u8fd9\u6837\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5f88\u77ed\u7684\u5b57\u7b26\u4e32\u6765\u5b58\u50a8\u7528\u6237\u4e00\u4e2a\u6708\u7684\u7b7e\u5230\u8bb0\u5f55\u3002\u4f18\u5316\u540e\u7684\u6548\u679c\u975e\u5e38\u660e\u663e\uff0c\u5185\u5b58\u76f4\u63a5\u964d\u5230\u4e86 10 \u4e2a G\u3002<\/p>\n
    \u56e0\u4e3a\u67e5\u8be2\u6574\u4e2a\u6708\u7684\u7b7e\u5230\u72b6\u6001 API \u8c03\u7528\u7684\u5f88\u9891\u7e41\uff0c\u6240\u4ee5\u63a5\u53e3\u7684\u901a\u4fe1\u91cf\u4e5f\u8ddf\u7740\u5c0f\u4e86\u5f88\u591a\u3002<\/p>\n<\/p>\n<\/p>\n
    \u4f46\u662f\u4f4d\u56fe\u4e5f\u6709\u4e00\u4e2a\u7f3a\u70b9\uff0c\u5b83\u7684\u5e95\u5c42\u662f\u5b57\u7b26\u4e32\uff0c\u5b57\u7b26\u4e32\u662f\u8fde\u7eed\u5b58\u50a8\u7a7a\u95f4\uff0c\u4f4d\u56fe\u4f1a\u81ea\u52a8\u6269\u5c55\uff0c\u6bd4\u5982\u4e00\u4e2a\u5f88\u5927\u7684\u4f4d\u56fe 8M \u4e2a\u4f4d\uff0c\u53ea\u6709\u6700\u540e\u4e00\u4e2a\u4f4d\u662f  1\uff0c\u5176\u4ed6\u4f4d\u90fd\u662f\u96f6\uff0c\u8fd9\u4e5f\u4f1a\u5360\u7528 1M \u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u8fd9\u6837\u7684\u6d6a\u8d39\u975e\u5e38\u4e25\u91cd\u3002<\/p>\n
    \u6240\u4ee5\u5462\u5c31\u6709\u4e86\u5486\u54ee\u4f4d\u56fe\u8fd9\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5bf9\u5927\u4f4d\u56fe\u8fdb\u884c\u4e86\u5206\u6bb5\u5b58\u50a8\uff0c\u5168\u4f4d\u96f6\u7684\u6bb5\u53ef\u4ee5\u4e0d\u7528\u5b58\u3002<\/p>\n
    \u53e6\u5916\u8fd8\u5bf9\u6bcf\u4e2a\u6bb5\u8bbe\u8ba1\u4e86\u7a00\u758f\u5b58\u50a8\u7ed3\u6784\uff0c\u5982\u679c\u8fd9\u4e2a\u6bb5\u4e0a\u7f6e 1 \u7684\u4f4d\u4e0d\u591a\uff0c\u53ef\u4ee5\u53ea\u5b58\u50a8\u5b83\u4eec\u7684\u504f\u79fb\u91cf\u6574\u6570\u3002\u8fd9\u6837\u4f4d\u56fe\u7684\u5b58\u50a8\u7a7a\u95f4\u5c31\u5f97\u5230\u4e86\u975e\u5e38\u663e\u8457\u7684\u538b\u7f29\u3002<\/p>\n
    \u8fd9\u4e2a\u5486\u54ee\u4f4d\u56fe\u5728\u5927\u6570\u636e\u7cbe\u51c6\u8ba1\u6570\u9886\u57df\u975e\u5e38\u6709\u4ef7\u503c\uff0c\u611f\u5174\u8da3\u7684\u540c\u5b66\u53ef\u4ee5\u4e86\u89e3\u4e00\u4e0b\uff1ahttps:\/\/juejin.im\/post\/5cf5c817e51d454fbf5409b0<\/p>\n
    \u6a21\u7cca\u8ba1\u6570<\/span><\/strong><\/p>\n
    \u524d\u9762\u63d0\u5230\u8fd9\u4e2a\u7b7e\u5230\u7cfb\u7edf\uff0c\u5982\u679c\u4ea7\u54c1\u7ecf\u7406\u9700\u8981\u77e5\u9053\u8fd9\u4e2a\u7b7e\u5230\u7684\u65e5\u6d3b\u6708\u6d3b\u600e\u4e48\u529e\u5462?\u901a\u5e38\u6211\u4eec\u4f1a\u76f4\u63a5\u7529\u9505\uff0c\u8bf7\u627e\u6570\u636e\u90e8\u95e8\u3002<\/p>\n
    \u4f46\u662f\u6570\u636e\u90e8\u95e8\u7684\u6570\u636e\u5f80\u5f80\u4e0d\u662f\u5f88\u5b9e\u65f6\uff0c\u7ecf\u5e38\u524d\u4e00\u5929\u7684\u6570\u636e\u9700\u8981\u7b2c\u4e8c\u5929\u624d\u80fd\u8dd1\u51fa\u6765\uff0c\u79bb\u7ebf\u8ba1\u7b97\u901a\u5e38\u662f\u5b9a\u65f6\u7684\u4e00\u5929\u4e00\u6b21\u3002\u90a3\u5982\u4f55\u5b9e\u73b0\u4e00\u4e2a\u5b9e\u65f6\u7684\u6d3b\u8dc3\u8ba1\u6570?<\/p>\n
    \u6700\u7b80\u5355\u7684\u65b9\u6848\u5c31\u662f\u5728 Redis \u91cc\u9762\u7ef4\u62a4\u4e00\u4e2a Set \u96c6\u5408\uff0c\u6765\u4e00\u4e2a\u7528\u6237\uff0c\u5c31 Sadd \u4e00\u4e0b\uff0c\u6700\u7ec8\u96c6\u5408\u7684\u5927\u5c0f\u5c31\u662f\u6211\u4eec\u9700\u8981\u7684 UV \u6570\u5b57\u3002<\/p>\n
    \u4f46\u662f\u8fd9\u4e2a\u7a7a\u95f4\u6d6a\u8d39\u5f88\u4e25\u91cd\uff0c\u4ec5\u4ec5\u4e3a\u4e86\u4e00\u4e2a\u6570\u5b57\u8981\u5b58\u50a8\u8fd9\u6837\u4e00\u4e2a\u5e9e\u5927\u7684\u96c6\u5408\u4f3c\u4e4e\u975e\u5e38\u4e0d\u503c\u5f53\u3002\u90a3\u8be5\u600e\u4e48\u529e?<\/p>\n
    \u8fd9\u65f6\u4f60\u5c31\u53ef\u4ee5\u4f7f\u7528 Redis \u63d0\u4f9b\u7684 HyperLogLog \u6a21\u7cca\u8ba1\u6570\u529f\u80fd\uff0c\u5b83\u662f\u4e00\u79cd\u6982\u7387\u8ba1\u6570\uff0c\u6709\u4e00\u5b9a\u7684\u8bef\u5dee\uff0c\u8bef\u5dee\u5927\u7ea6\u662f 0.81%\u3002<\/p>\n
    \u4f46\u662f\u7a7a\u95f4\u5360\u7528\u5f88\u5c0f\uff0c\u5176\u5e95\u5c42\u662f\u4e00\u4e2a\u4f4d\u56fe\uff0c\u5b83\u6700\u591a\u53ea\u4f1a\u5360\u7528 12K \u7684\u5b58\u50a8\u7a7a\u95f4\u3002\u800c\u4e14\u5728\u8ba1\u6570\u503c\u6bd4\u8f83\u5c0f\u7684\u65f6\u5019\uff0c\u4f4d\u56fe\u4f7f\u7528\u7a00\u758f\u5b58\u50a8\uff0c\u7a7a\u95f4\u5360\u7528\u5c31\u66f4\u5c0f\u4e86\u3002<\/p>\n<\/p>\n
    pfadd sign_uv_${day} user_id \r\npfcount sign_uv_${day}<\/pre>\n<\/p>\n
    \u5fae\u4fe1\u516c\u4f17\u53f7\u6587\u7ae0\u7684\u9605\u8bfb\u6570\u53ef\u4ee5\u4f7f\u7528\u5b83\uff0c\u7f51\u9875\u7684 UV  \u7edf\u8ba1\u5b83\u90fd\u53ef\u4ee5\u5b8c\u6210\u3002\u4f46\u662f\u5982\u679c\u4ea7\u54c1\u7ecf\u7406\u975e\u5e38\u5728\u4e4e\u6570\u5b57\u7684\u51c6\u786e\u6027\uff0c\u6bd4\u5982\u67d0\u4e2a\u7edf\u8ba1\u9700\u6c42\u548c\u91d1\u94b1\u76f4\u63a5\u6302\u94a9\uff0c\u90a3\u4e48\u4f60\u53ef\u4ee5\u8003\u8651\u4e00\u4e0b\u524d\u9762\u63d0\u5230\u7684\u5486\u54ee\u4f4d\u56fe\u3002<\/p>\n
    \u5b83\u4f7f\u7528\u8d77\u6765\u4f1a\u590d\u6742\u4e00\u4e9b\uff0c\u9700\u8981\u63d0\u524d\u5c06\u7528\u6237 ID \u8fdb\u884c\u6574\u6570\u5e8f\u5217\u5316\u3002Redis \u6ca1\u6709\u539f\u751f\u63d0\u4f9b\u5486\u54ee\u4f4d\u56fe\u7684\u529f\u80fd\uff0c\u4f46\u662f\u6709\u4e00\u4e2a\u5f00\u6e90\u7684 Redis Module  \u53ef\u4ee5\u62ff\u6765\u5373\u7528\uff1ahttps:\/\/github.com\/aviggiano\/redis-roaring\u3002<\/p>\n
    \u5e03\u9686\u8fc7\u6ee4\u5668<\/span><\/strong><\/p>\n
    \u6700\u540e\u6211\u4eec\u8981\u8bb2\u4e00\u4e0b\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u5982\u679c\u4e00\u4e2a\u7cfb\u7edf\u5373\u5c06\u4f1a\u6709\u5927\u91cf\u7684\u65b0\u7528\u6237\u6d8c\u5165\u65f6\uff0c\u5b83\u5c31\u4f1a\u975e\u5e38\u6709\u4ef7\u503c\uff0c\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u7f13\u5b58\u7684\u7a7f\u900f\u7387\uff0c\u964d\u4f4e\u6570\u636e\u5e93\u7684\u538b\u529b\u3002<\/p>\n
    \u8fd9\u4e2a\u65b0\u7528\u6237\u7684\u6d8c\u5165\u4e0d\u4e00\u5b9a\u662f\u4e1a\u52a1\u7cfb\u7edf\u7684\u5927\u89c4\u6a21\u94fa\u5f00\uff0c\u4e5f\u53ef\u80fd\u662f\u56e0\u4e3a\u6765\u81ea\u5916\u90e8\u7684\u7f13\u5b58\u7a7f\u900f\u653b\u51fb\u3002<\/p>\n<\/p>\n
    def get_user_state0(user_id): \r\n  state = cache.get(user_id) \r\n  if not state: \r\n    state = db.get(user_id) or {} \r\n    cache.set(user_id, state) \r\n  return state \r\ndef save_user_state0(user_id, state): \r\n  cache.set(user_id, state) \r\n  db.set_async(user_id, state)<\/pre>\n<\/p>\n
    \u6bd4\u5982\u4e0a\u9762\u5c31\u662f\u8fd9\u4e2a\u4e1a\u52a1\u7cfb\u7edf\u7684\u7528\u6237\u72b6\u6001\u67e5\u8be2\u63a5\u53e3\u4ee3\u7801\uff0c\u73b0\u5728\u4e00\u4e2a\u65b0\u7528\u6237\u8fc7\u6765\u4e86\uff0c\u5b83\u4f1a\u5148\u53bb\u7f13\u5b58\u91cc\u67e5\u8be2\u6709\u6ca1\u6709\u8fd9\u4e2a\u7528\u6237\u7684\u72b6\u6001\u6570\u636e\uff0c\u56e0\u4e3a\u662f\u65b0\u7528\u6237\uff0c\u6240\u4ee5\u80af\u5b9a\u7f13\u5b58\u91cc\u6ca1\u6709\u3002<\/p>\n
    \u7136\u540e\u5b83\u5c31\u8981\u53bb\u67e5\u6570\u636e\u5e93\uff0c\u7ed3\u679c\u6570\u636e\u5e93\u4e5f\u6ca1\u6709\u3002\u5982\u679c\u8fd9\u6837\u7684\u65b0\u7528\u6237\u5927\u6279\u91cf\u77ac\u95f4\u6d8c\u5165\uff0c\u90a3\u4e48\u53ef\u4ee5\u9884\u89c1\u6570\u636e\u5e93\u7684\u538b\u529b\u4f1a\u6bd4\u8f83\u5927\uff0c\u4f1a\u5b58\u5728\u5927\u91cf\u7684\u7a7a\u67e5\u8be2\u3002<\/p>\n
    \u6211\u4eec\u975e\u5e38\u5e0c\u671b Redis \u91cc\u9762\u6709\u8fd9\u6837\u7684\u4e00\u4e2a Set\uff0c\u5b83\u5b58\u653e\u4e86\u6240\u6709\u7528\u6237\u7684 ID\uff0c\u8fd9\u6837\u901a\u8fc7\u67e5\u8be2\u8fd9\u4e2a Set \u96c6\u5408\u5c31\u77e5\u9053\u662f\u4e0d\u662f\u65b0\u7528\u6237\u6765\u4e86\u3002<\/p>\n
    \u5f53\u7528\u6237\u91cf\u975e\u5e38\u5e9e\u5927\u7684\u65f6\u5019\uff0c\u7ef4\u62a4\u8fd9\u6837\u7684\u4e00\u4e2a\u96c6\u5408\u9700\u8981\u7684\u5b58\u50a8\u7a7a\u95f4\u662f\u5f88\u5927\u7684\u3002<\/p>\n
    \u8fd9\u65f6\u5019\u5c31\u53ef\u4ee5\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u5b83\u76f8\u5f53\u4e8e\u4e00\u4e2a Set\uff0c\u4f46\u662f\u5462\u53c8\u4e0d\u540c\u4e8e Set\uff0c\u5b83\u9700\u8981\u7684\u5b58\u50a8\u7a7a\u95f4\u8981\u5c0f\u7684\u591a\u3002<\/p>\n
    \u6bd4\u5982\u4f60\u5b58\u50a8\u4e00\u4e2a\u7528\u6237 ID \u9700\u8981 64 \u4e2a\u5b57\u8282\uff0c\u800c\u5e03\u9686\u8fc7\u6ee4\u5668\u5b58\u50a8\u4e00\u4e2a\u7528\u6237 ID \u53ea\u9700\u8981 1 \u4e2a\u5b57\u8282\u591a\u70b9\u3002<\/p>\n
    \u4f46\u662f\u5462\u5b83\u5b58\u7684\u4e0d\u662f\u7528\u6237 ID\uff0c\u800c\u662f\u7528\u6237 ID \u7684\u6307\u7eb9\uff0c\u6240\u4ee5\u4f1a\u5b58\u5728\u4e00\u5b9a\u7684\u5c0f\u6982\u7387\u8bef\u5224\uff0c\u5b83\u662f\u4e00\u4e2a\u5177\u5907\u6a21\u7cca\u8fc7\u6ee4\u80fd\u529b\u7684\u5bb9\u5668\u3002<\/p>\n<\/p>\n
    \u5f53\u5b83\u8bf4\u7528\u6237 ID \u4e0d\u5728\u5bb9\u5668\u4e2d\u65f6\uff0c\u90a3\u4e48\u5c31\u80af\u5b9a\u4e0d\u5728\u3002\u5f53\u5b83\u8bf4\u7528\u6237 ID \u5728\u5bb9\u5668\u91cc\u65f6\uff0c99% \u7684\u6982\u7387\u4e0b\u5b83\u662f\u6b63\u786e\u7684\uff0c\u8fd8\u6709 1% \u7684\u6982\u7387\u5b83\u4ea7\u751f\u4e86\u8bef\u5224\u3002<\/p>\n
    \u4e0d\u8fc7\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u8fd9\u4e2a\u8bef\u5224\u5e76\u4e0d\u4f1a\u4ea7\u751f\u95ee\u9898\uff0c\u8bef\u5224\u7684\u4ee3\u4ef7\u53ea\u662f\u7f13\u5b58\u7a7f\u900f\u800c\u5df2\u3002<\/p>\n
    \u76f8\u5f53\u4e8e\u6709 1% \u7684\u65b0\u7528\u6237\u6ca1\u6709\u5f97\u5230\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u4fdd\u62a4\u76f4\u63a5\u7a7f\u900f\u5230\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u800c\u5269\u4e0b\u7684 99% \u7684\u65b0\u7528\u6237\u90fd\u53ef\u4ee5\u88ab\u5e03\u9686\u8fc7\u6ee4\u5668\u6709\u6548\u7684\u6321\u4f4f\uff0c\u907f\u514d\u4e86\u7f13\u5b58\u7a7f\u900f\u3002<\/p>\n<\/p>\n
    def get_user_state(user_id): \r\n  exists = bloomfilter.is_user_exists(user_id) \r\n  if not exists: \r\n    return {} \r\n  return get_user_state0(user_id) \r\ndef save_user_state(user_id, state): \r\n  bloomfilter.set_user_exists(user_id) \r\n  save_user_state0(user_id, state)<\/pre>\n<\/p>\n
    \u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u539f\u7406\u6709\u4e00\u4e2a\u5f88\u597d\u7684\u6bd4\u55bb\uff0c\u90a3\u5c31\u662f\u5728\u51ac\u5929\u4e00\u7247\u767d\u96ea\u8986\u76d6\u7684\u5730\u9762\u4e0a\uff0c\u5982\u679c\u4f60\u4ece\u4e0a\u9762\u8d70\u8fc7\uff0c\u5c31\u4f1a\u7559\u4e0b\u4f60\u7684\u811a\u5370\u3002<\/p>\n
    \u5982\u679c\u5730\u9762\u4e0a\u6709\u4f60\u7684\u811a\u5370\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u5927\u6982\u7387\u65ad\u5b9a\u4f60\u6765\u8fc7\u8fd9\u4e2a\u5730\u65b9\uff0c\u4f46\u662f\u4e5f\u4e0d\u4e00\u5b9a\uff0c\u4e5f\u8bb8\u522b\u4eba\u7684\u978b\u6b63\u597d\u548c\u4f60\u7a7f\u7684\u4e00\u6a21\u4e00\u6837\u3002<\/p>\n
    \u53ef\u662f\u5982\u679c\u5730\u9762\u4e0a\u6ca1\u6709\u4f60\u7684\u811a\u5370\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5 100% \u65ad\u5b9a\u4f60\u6ca1\u6765\u8fc7\u8fd9\u4e2a\u5730\u65b9\u3002<\/p>\n
    \u4f5c\u8005\uff1a\u94b1\u6587\u54c1(\u8001\u94b1)<\/p>\n
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