{"id":96095,"date":"2026-08-27T13:16:34","date_gmt":"2026-08-27T05:16:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/96095.html"},"modified":"2026-08-27T13:16:34","modified_gmt":"2026-08-27T05:16:34","slug":"%e5%a4%a7%e5%8e%82-java-%e5%90%8e%e7%ab%af%e5%9c%ba%e6%99%af%e9%a2%98%ef%bc%9aredis-%e7%83%ad-key-%e6%89%93%e6%bb%a1%e5%8d%95%e5%88%86%e7%89%87%ef%bc%8c%e5%a6%82%e4%bd%95%e6%8e%92%e6%9f%a5%e3%80%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/96095.html","title":{"rendered":"\u5927\u5382 Java \u540e\u7aef\u573a\u666f\u9898\uff1aRedis \u70ed Key \u6253\u6ee1\u5355\u5206\u7247\uff0c\u5982\u4f55\u6392\u67e5\u3001\u62c6\u5206\u4e0e\u56de\u7b54\u8ffd\u95ee"},"content":{"rendered":"

\u5927\u5382 Java \u540e\u7aef\u573a\u666f\u9898：Redis \u70ed Key \u6253\u6ee1\u5355\u5206\u7247，\u5982\u4f55\u6392\u67e5\u3001\u62c6\u5206\u4e0e\u56de\u7b54\u8ffd\u95ee<\/h2>\n

\u9002\u5408\u51c6\u5907 Java \u540e\u7aef\u6821\u62db\u3001\u793e\u62db\u548c\u7cfb\u7edf\u8bbe\u8ba1\u9762\u8bd5，\u4e5f\u9002\u5408\u6b63\u5728\u5904\u7406 Redis Cluster \u5c40\u90e8\u8fc7\u8f7d\u7684\u5f00\u53d1\u8005\u3002\u8bfb\u5b8c\u4f60\u5c06\u5f97\u5230\u4e00\u6761\u80fd\u843d\u5730\u7684\u8bc1\u636e\u94fe：\u5148\u8bc1\u660e\u662f\u70ed Key \u548c\u5355\u5206\u7247\u74f6\u9888，\u518d\u6b62\u635f\u3001\u62c6\u5206\u3001\u7070\u5ea6\u8fc1\u79fb，\u6700\u540e\u7528\u6307\u6807\u9a8c\u6536；\u6587\u672b\u8fd8\u6709\u9762\u8bd5\u5b98\u4e94\u8f6e\u8ffd\u95ee\u548c\u4e00\u4efd 90 \u79d2\u56de\u7b54\u3002<\/p>\n

\u5148\u7ed9\u7ed3\u8bba：\u4e0d\u8981\u4e00\u770b\u5230\u67d0\u4e2a Redis \u8282\u70b9 CPU \u9ad8\u5c31\u76f4\u63a5\u201c\u52a0\u673a\u5668\u201d\u3002 Redis Cluster \u628a Key \u6620\u5c04\u5230 16384 \u4e2a Hash Slot，\u7a33\u5b9a\u72b6\u6001\u4e0b\u4e00\u4e2a Slot \u7531\u4e00\u4e2a\u4e3b\u8282\u70b9\u670d\u52a1\u3002\u82e5\u6d41\u91cf\u96c6\u4e2d\u5728\u4e00\u4e2a Key，\u5b83\u4ecd\u4f1a\u843d\u5230\u4e00\u4e2a Slot\u3001\u4e00\u4e2a\u4e3b\u5206\u7247；\u76f2\u76ee\u6269\u5bb9\u4f46\u4e0d\u6539\u53d8\u8bbf\u95ee\u5206\u5e03，\u70ed\u70b9\u4e0d\u4f1a\u81ea\u52a8\u5747\u644a\u3002<\/p>\n

\u4e00\u3001\u5148\u628a\u9898\u76ee\u8bf4\u6e05：\u70ed Key \u4e0d\u662f\u5927 Key<\/h3>\n

\u9762\u8bd5\u9898\u901a\u5e38\u8fd9\u6837\u7ed9\u73b0\u8c61：\u516d\u4e2a Redis \u5206\u7247\u4e2d，\u53ea\u6709\u4e00\u4e2a\u5206\u7247 CPU\u3001\u7f51\u7edc\u5e26\u5bbd\u548c\u547d\u4ee4\u6267\u884c\u91cf\u6301\u7eed\u6253\u6ee1，\u5176\u4ed6\u5206\u7247\u5f88\u7a7a；\u5e94\u7528 P99 \u5ef6\u8fdf\u4e0a\u5347，\u5076\u5c14\u8d85\u65f6，\u4f46\u603b\u5185\u5b58\u4ecd\u6709\u4f59\u91cf\u3002<\/p>\n

\u7b2c\u4e00\u53e5\u8bdd\u5e94\u8be5\u5148\u533a\u5206\u4e24\u4e2a\u95ee\u9898：<\/p>\n\n\u95ee\u9898\u672c\u8d28\u5e38\u89c1\u8bc1\u636e\u9996\u8981\u98ce\u9669<\/tr>\n\n\n\n
\u70ed Key<\/td>\n\u5355\u4f4d\u65f6\u95f4\u8bbf\u95ee\u9891\u7387\u8fc7\u9ad8<\/td>\n\u5355 Key QPS\u3001LFU \u9891\u6b21\u3001\u8282\u70b9\u7f51\u7edc\u548c CPU \u503e\u659c<\/td>\n\u5355\u5206\u7247\u541e\u5410\u4e0e\u5ef6\u8fdf\u4e0a\u9650<\/td>\n<\/tr>\n
\u5927 Key<\/td>\n\u5355\u4e2a\u503c\u5360\u7528\u5185\u5b58\u6216\u5143\u7d20\u6570\u91cf\u8fc7\u5927<\/td>\n–bigkeys\u3001–memkeys\u3001\u5e8f\u5217\u5316\u5927\u5c0f<\/td>\n\u963b\u585e\u3001\u7f51\u7edc\u6296\u52a8\u3001\u5220\u9664\u548c\u8fc1\u79fb\u6210\u672c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u540c\u4e00\u4e2a Key \u53ef\u80fd\u65e2\u70ed\u53c8\u5927，\u4f46\u4e24\u8005\u4e0d\u80fd\u6df7\u4e3a\u4e00\u8c08\u3002\u70ed Key \u6ca1\u6709\u9002\u7528\u4e8e\u6240\u6709\u7cfb\u7edf\u7684\u56fa\u5b9a\u9608\u503c，\u5e94\u7ed3\u5408\u8be5 Key \u5360\u8282\u70b9 QPS \u7684\u6bd4\u4f8b\u3001\u5206\u7247\u8d1f\u8f7d\u5dee\u3001P99 \u5ef6\u8fdf\u548c\u4e1a\u52a1 SLO \u5224\u65ad\u3002<\/p>\n

\u4e8c\u3001\u6392\u67e5\u987a\u5e8f：\u4ece\u5e94\u7528\u5230\u8282\u70b9，\u518d\u843d\u5230 Key \u548c Slot<\/h3>\n

\u6211\u7684\u6392\u67e5\u987a\u5e8f\u662f\u201c\u5e94\u7528\u8bf7\u6c42 \u2192 Redis \u8282\u70b9 \u2192 \u547d\u4ee4\/Key \u2192 Hash Slot\u201d，\u907f\u514d\u4e00\u4e0a\u6765\u5c31\u5bf9\u751f\u4ea7\u5e93\u6267\u884c\u9ad8\u98ce\u9669\u547d\u4ee4\u3002<\/p>\n

1. \u5148\u786e\u8ba4\u4e0d\u662f\u5e94\u7528\u4fa7\u6d41\u91cf\u6216\u91cd\u8bd5\u653e\u5927<\/h4>\n

\u5148\u770b\u63a5\u53e3 QPS\u3001\u9519\u8bef\u7387\u3001\u8d85\u65f6\u91cd\u8bd5\u6b21\u6570\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u548c\u8c03\u7528\u65b9\u5206\u5e03\u3002\u5982\u679c\u4e1a\u52a1\u521a\u4e0a\u7ebf\u70ed\u70b9\u6d3b\u52a8，\u6216\u8005\u4e0b\u6e38\u8d85\u65f6\u5f15\u53d1\u5ba2\u6237\u7aef\u65e0\u4e0a\u9650\u91cd\u8bd5，Redis \u770b\u5230\u7684\u9ad8 QPS \u53ef\u80fd\u53ea\u662f\u4e8c\u6b21\u653e\u5927\u3002<\/p>\n

\u540c\u65f6\u6309\u8282\u70b9\u6bd4\u8f83 CPU\u3001\u7f51\u7edc\u5165\u51fa\u3001\u8fde\u63a5\u6570\u3001\u6bcf\u79d2\u547d\u4ee4\u6570\u3001\u6162\u67e5\u8be2\u548c P99\u3002\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u660e\u663e\u9ad8，\u624d\u7ee7\u7eed\u5224\u65ad Slot \u6216 Key \u503e\u659c；\u6240\u6709\u8282\u70b9\u4e00\u8d77\u9ad8，\u66f4\u50cf\u603b\u5bb9\u91cf\u4e0d\u8db3\u3002<\/p>\n

2. \u7528\u4f4e\u98ce\u9669\u5de5\u5177\u7f29\u5c0f\u8303\u56f4<\/h4>\n

\u4e0b\u9762\u547d\u4ee4\u662f\u6392\u67e5\u6a21\u677f，\u4e3b\u673a\u3001\u7aef\u53e3\u548c\u8ba4\u8bc1\u53c2\u6570\u5e94\u901a\u8fc7\u5b89\u5168\u914d\u7f6e\u6ce8\u5165，\u4e0d\u8981\u5199\u8fdb\u811a\u672c\u6216\u622a\u56fe\u3002<\/p>\n

# \u8fde\u7eed\u89c2\u5bdf\u5b9e\u4f8b\u72b6\u6001；\u5148\u786e\u8ba4\u54ea\u4e2a\u8282\u70b9\u7684 ops\u3001\u7f51\u7edc\u6216\u5ef6\u8fdf\u5f02\u5e38<\/span>
\nredis-cli -h<\/span> redis-host -p<\/span> 6379<\/span> –stat<\/span> -i<\/span> 1<\/span><\/p>\n

# \u6e10\u8fdb\u626b\u63cf\u5927 Key；-i \u7528\u6765\u964d\u4f4e\u626b\u63cf\u5bf9\u7ebf\u4e0a\u5b9e\u4f8b\u7684\u5f71\u54cd<\/span>
\nredis-cli -h<\/span> redis-host -p<\/span> 6379<\/span> –bigkeys<\/span> -i<\/span> 0.1<\/span><\/p>\n

# \u53ea\u6709 maxmemory-policy \u4f7f\u7528 LFU（\u5982 allkeys-lfu）\u65f6\u624d\u53ef\u4f9d\u8d56 –hotkeys<\/span>
\nredis-cli -h<\/span> redis-host -p<\/span> 6379<\/span> –hotkeys<\/span> -i<\/span> 0.1<\/span><\/p>\n

# \u67e5\u5019\u9009 Key \u7684 LFU \u9891\u6b21；\u540c\u6837\u8981\u6c42 LFU \u7b56\u7565<\/span>
\nredis-cli -h<\/span> redis-host -p<\/span> 6379<\/span> OBJECT FREQ 'product:12345'<\/span><\/p>\n

# \u786e\u8ba4\u5019\u9009 Key \u88ab\u6620\u5c04\u5230\u54ea\u4e2a Slot<\/span>
\nredis-cli -h<\/span> redis-host -p<\/span> 6379<\/span> CLUSTER KEYSLOT 'product:12345'<\/span><\/p>\n

–bigkeys\u3001–memkeys\u3001–keystats \u548c –scan \u90fd\u4f7f\u7528\u6e10\u8fdb\u5f0f\u626b\u63cf\u601d\u8def，-i \u53ef\u964d\u4f4e\u626b\u63cf\u901f\u5ea6\u3002–hotkeys \u548c OBJECT FREQ \u4f9d\u8d56 LFU \u9891\u6b21\u8ba1\u6570；\u5982\u679c\u6dd8\u6c70\u7b56\u7565\u4e0d\u662f LFU，\u5c31\u4e0d\u80fd\u628a\u5b83\u4eec\u5f53\u4f5c\u901a\u7528\u7b54\u6848，\u5e94\u6539\u7528\u5e94\u7528\u57cb\u70b9\u3001\u4ee3\u7406\u5c42\u7edf\u8ba1\u3001\u91c7\u6837\u65e5\u5fd7\u6216\u76d1\u63a7\u5e73\u53f0\u7684 Top Key \u80fd\u529b\u3002<\/p>\n

MONITOR \u4f1a\u8f93\u51fa\u670d\u52a1\u5668\u5904\u7406\u7684\u6240\u6709\u547d\u4ee4，\u751f\u4ea7\u73af\u5883\u5e38\u6001\u4f7f\u7528\u53ef\u80fd\u5e26\u6765\u663e\u8457\u5f00\u9500\u548c\u654f\u611f\u4fe1\u606f\u66b4\u9732\u3002\u5b83\u6700\u591a\u53ea\u80fd\u5728\u7ecf\u8fc7\u5ba1\u6279\u3001\u77ed\u65f6\u3001\u53d7\u63a7\u7684\u6545\u969c\u7a97\u53e3\u4e2d\u4f7f\u7528，\u4e0d\u80fd\u4f5c\u4e3a\u7b2c\u4e00\u6392\u67e5\u624b\u6bb5\u3002 \"\"<\/p>\n

\u4e09\u3001\u4e3a\u4ec0\u4e48\u52a0\u8282\u70b9\u53ef\u80fd\u65e0\u6548：\u5355 Key \u4ecd\u53ea\u5c5e\u4e8e\u4e00\u4e2a Slot<\/h3>\n

Redis Cluster \u4f7f\u7528 CRC16(key) mod 16384 \u8ba1\u7b97 Slot\u3002\u96c6\u7fa4\u6269\u5bb9\u548c Reshard \u80fd\u628a\u4e0d\u540c Slot \u5206\u7ed9\u66f4\u591a\u8282\u70b9，\u5374\u4e0d\u80fd\u628a\u540c\u4e00\u4e2a Key \u7684\u5355\u6b21\u8bfb\u5199\u62c6\u5230\u591a\u4e2a\u4e3b\u5206\u7247\u3002<\/p>\n

\u66f4\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u662f Hash Tag：Key \u4e2d\u82e5\u5305\u542b\u6709\u6548\u7684 {…}，\u53ea\u6709\u82b1\u62ec\u53f7\u5185\u7684\u5185\u5bb9\u53c2\u4e0e\u8ba1\u7b97\u3002\u5b83\u5e38\u7528\u4e8e\u8ba9\u76f8\u5173 Key \u843d\u5728\u540c\u4e00 Slot \u4ee5\u6267\u884c\u591a Key \u64cd\u4f5c，\u4f46\u5199\u9519\u4f1a\u5236\u9020\u70ed\u70b9\u3002\u4f8b\u5982：<\/p>\n

product:{12345}:detail
\nproduct:{12345}:stock
\nproduct:{12345}:recommend<\/p>\n

\u8fd9\u4e09\u4e2a Key \u4f1a\u88ab\u56fa\u5b9a\u5230\u540c\u4e00 Slot\u3002\u82e5\u76ee\u6807\u662f\u628a\u70ed\u70b9\u526f\u672c\u5206\u6563\u5230\u4e0d\u540c Slot，\u5c31\u4e0d\u80fd\u7ed9\u6240\u6709\u526f\u672c\u590d\u7528\u540c\u4e00\u4e2a {12345} \u6807\u7b7e\u3002\u9762\u8bd5\u4e2d\u80fd\u4e3b\u52a8\u6307\u51fa\u8fd9\u4e00\u70b9，\u901a\u5e38\u6bd4\u53ea\u8bf4\u201cKey \u540e\u9762\u52a0\u968f\u673a\u6570\u201d\u66f4\u6709\u5de5\u7a0b\u542b\u91cf\u3002<\/p>\n

\u56db\u3001\u5148\u6b62\u635f：\u672c\u5730\u7f13\u5b58\u3001\u8bf7\u6c42\u5408\u5e76\u3001\u9650\u6d41\u548c\u53ea\u8bfb\u526f\u672c<\/h3>\n

\u6839\u6cbb\u65b9\u6848\u4e0a\u7ebf\u524d，\u5148\u4fdd\u62a4 Redis \u548c\u4e1a\u52a1 SLO\u3002<\/p>\n

  • \u8fdb\u7a0b\u5185\u77ed TTL \u7f13\u5b58：\u9002\u5408\u8bfb\u53d6\u8fdc\u591a\u4e8e\u5199\u5165\u3001\u5141\u8bb8\u77ed\u6682\u4e0d\u4e00\u81f4\u7684\u6570\u636e\u3002TTL \u52a0\u968f\u673a\u6296\u52a8，\u907f\u514d\u5927\u91cf\u5b9e\u4f8b\u540c\u65f6\u5931\u6548\u3002<\/li>\n
  • SingleFlight\/\u8bf7\u6c42\u5408\u5e76：\u540c\u4e00\u8fdb\u7a0b\u5185，\u4e00\u4e2a Key \u5931\u6548\u65f6\u53ea\u5141\u8bb8\u4e00\u4e2a\u8bf7\u6c42\u56de\u6e90，\u5176\u4ed6\u8bf7\u6c42\u7b49\u5f85\u7ed3\u679c，\u51cf\u5c11\u7f13\u5b58\u51fb\u7a7f\u3002<\/li>\n
  • \u6309\u4e1a\u52a1\u4f18\u5148\u7ea7\u9650\u6d41\u4e0e\u964d\u7ea7：\u4fdd\u7559\u4ea4\u6613\u3001\u652f\u4ed8\u7b49\u5173\u952e\u94fe\u8def，\u63a8\u8350\u6216\u7edf\u8ba1\u7c7b\u8bf7\u6c42\u53ef\u8fd4\u56de\u65e7\u503c\u3001\u9ed8\u8ba4\u503c\u6216\u7a0d\u540e\u91cd\u8bd5\u3002<\/li>\n
  • \u8bfb\u526f\u672c\u5206\u62c5\u8bfb\u6d41\u91cf：\u53ea\u6709\u4e1a\u52a1\u80fd\u63a5\u53d7\u590d\u5236\u5ef6\u8fdf\u65f6\u624d\u4f7f\u7528；\u5b83\u7f13\u89e3\u8bfb\u538b\u529b，\u4f46\u4e0d\u80fd\u89e3\u51b3\u5f3a\u4e00\u81f4\u5199\u70ed\u70b9\u3002<\/li>\n

    \u672c\u5730\u7f13\u5b58\u4e0d\u80fd\u53ea\u5199\u201c\u52a0\u4e2a Caffeine\u201d\u3002\u5fc5\u987b\u540c\u65f6\u56de\u7b54\u5931\u6548\u65b9\u5f0f\u3001\u6700\u5927\u5bb9\u91cf\u3001TTL\u3001\u51b7\u542f\u52a8\u3001\u66f4\u65b0\u5e76\u53d1\u548c\u4e00\u81f4\u6027\u8fb9\u754c\u3002Redis \u7684\u5ba2\u6237\u7aef\u4fa7\u7f13\u5b58\u8fd8\u53ef\u7528 CLIENT TRACKING \u63a5\u6536\u5931\u6548\u901a\u77e5，\u4f46\u7f51\u7edc\u65ad\u8fde\u548c\u5931\u6548\u901a\u77e5\u7ade\u6001\u4ecd\u9700\u5904\u7406，\u4e0d\u80fd\u627f\u8bfa\u7edd\u5bf9\u4e0d\u8bfb\u65e7\u503c\u3002<\/p>\n

    \u4e94\u3001\u6839\u6cbb：\u628a\u4e00\u4e2a\u903b\u8f91\u70ed\u70b9\u62c6\u6210\u591a\u4e2a\u7269\u7406 Key<\/h3>\n

    \u5982\u679c\u70ed\u70b9\u662f\u8bfb\u591a\u5199\u5c11\u7684\u914d\u7f6e\u3001\u5546\u54c1\u8be6\u60c5\u6216\u6d3b\u52a8\u4fe1\u606f，\u53ef\u4ee5\u5efa\u7acb N \u4e2a\u5185\u5bb9\u76f8\u540c\u7684\u526f\u672c，\u8bfb\u8bf7\u6c42\u901a\u8fc7\u7a33\u5b9a\u6563\u5217\u6216\u968f\u673a\u7b56\u7565\u6253\u6563：<\/p>\n

    int<\/span> replicas =<\/span> 16<\/span>;<\/span>
    \nint<\/span> bucket =<\/span> Math<\/span>.<\/span>floorMod<\/span>(<\/span>userId.<\/span>hashCode<\/span>(<\/span>)<\/span>,<\/span> replicas)<\/span>;<\/span>
    \nString<\/span> physicalKey =<\/span> "product:12345:hot:"<\/span> +<\/span> String<\/span>.<\/span>format<\/span>(<\/span>"%02d"<\/span>,<\/span> bucket)<\/span>;<\/span>
    \nProduct<\/span> value =<\/span> redisTemplate.<\/span>opsForValue<\/span>(<\/span>)<\/span>.<\/span>get<\/span>(<\/span>physicalKey)<\/span>;<\/span><\/p>\n

    \u8fd9\u91cc\u7684\u5173\u952e\u4e0d\u5728\u5b57\u7b26\u4e32\u62fc\u63a5，\u800c\u5728\u56db\u4e2a\u7ea6\u675f：<\/p>\n

      \n
    • N \u7531\u5cf0\u503c QPS\u3001\u5355\u5206\u7247\u5b89\u5168\u541e\u5410\u3001\u70ed\u70b9\u6bd4\u4f8b\u548c\u6269\u5bb9\u4f59\u91cf\u4f30\u7b97，\u4e0d\u62cd\u8111\u888b\u56fa\u5b9a\u4e3a 16\u3002<\/li>\n
    • \u591a\u4e2a\u526f\u672c\u5fc5\u987b\u843d\u5230\u4e0d\u540c Slot；\u4e0d\u8981\u628a\u76f8\u540c Hash Tag \u653e\u8fdb\u6bcf\u4e2a\u526f\u672c\u3002<\/li>\n
    • \u66f4\u65b0\u65f6\u8981\u5b9a\u4e49\u7248\u672c\u53f7\u3001\u6279\u91cf\u5237\u65b0\u6216\u5931\u6548\u5e7f\u64ad，\u907f\u514d 16 \u4e2a\u526f\u672c\u8fd4\u56de\u4e0d\u540c\u7248\u672c\u3002<\/li>\n
    • \u5220\u9664\u3001\u8fc7\u671f\u548c\u56de\u6e90\u8981\u6709\u5e76\u53d1\u4fdd\u62a4，\u5426\u5219\u62c6\u5206\u540e\u4ecd\u53ef\u80fd\u540c\u65f6\u51fb\u7a7f\u6570\u636e\u5e93\u3002<\/li>\n<\/ul>\n

      \u5982\u679c\u70ed\u70b9\u6765\u81ea\u4e00\u4e2a\u8d85\u5927 Hash \u4e2d\u7684\u5c11\u6570\u5b57\u6bb5，\u53ef\u6309\u4e1a\u52a1\u7ef4\u5ea6\u62c6\u5b57\u6bb5；\u5982\u679c\u662f\u8ba1\u6570\u5668\u5199\u70ed\u70b9，\u53ef\u5206\u6876\u7d2f\u52a0\u540e\u5f02\u6b65\u6c47\u603b，\u4f46\u8981\u660e\u786e\u5b9e\u65f6\u6027\u3001\u5e42\u7b49\u548c\u6700\u7ec8\u4e00\u81f4\u6027\u3002\u4efb\u4f55\u62c6\u6cd5\u90fd\u8981\u5148\u4ece\u8bfb\u5199\u8bed\u4e49\u51fa\u53d1，\u800c\u4e0d\u662f\u673a\u68b0\u5730\u7ed9 Key \u52a0\u968f\u673a\u540e\u7f00\u3002 \"\"<\/p>\n

      \u516d\u3001\u65e0\u635f\u8fc1\u79fb：\u7248\u672c\u5316\u3001\u53cc\u5199\u3001\u5f71\u5b50\u8bfb\u3001\u7070\u5ea6\u5207\u6362\u3001\u56de\u6eda<\/h3>\n

      \u751f\u4ea7\u7cfb\u7edf\u4e0d\u80fd\u505c\u673a\u6539 Key\u3002\u6bd4\u8f83\u7a33\u59a5\u7684\u8fc1\u79fb\u987a\u5e8f\u662f：<\/p>\n

    • \u5efa\u7acb v2 \u7269\u7406 Key \u548c\u7248\u672c\u5b57\u6bb5，\u4fdd\u7559\u65e7 Key\u3002<\/li>\n
    • \u65b0\u5199\u8bf7\u6c42\u5148\u53cc\u5199\u65e7 Key \u4e0e\u5168\u90e8\u65b0\u526f\u672c，\u5e76\u8bb0\u5f55\u5931\u8d25\u548c\u7248\u672c\u5dee\u5f02\u3002<\/li>\n
    • \u5bf9\u5b58\u91cf\u6570\u636e\u56de\u586b；\u56de\u586b\u8fc7\u7a0b\u9650\u901f，\u907f\u514d\u8fdb\u4e00\u6b65\u6324\u538b\u70ed\u70b9\u5206\u7247\u3002<\/li>\n
    • \u4ee5\u5c0f\u6bd4\u4f8b\u5f71\u5b50\u8bfb\u53d6\u65b0 Key，\u53ea\u6bd4\u8f83\u7ed3\u679c，\u4e0d\u5411\u7528\u6237\u8fd4\u56de\u3002<\/li>\n
    • \u5dee\u5f02\u7387\u8fbe\u6807\u540e，\u4ece 1%\u30015%\u300120%\u300150% \u9010\u6b65\u5207\u8bfb，\u6301\u7eed\u89c2\u5bdf P99\u3001\u9519\u8bef\u7387\u548c\u5404\u8282\u70b9\u8d1f\u8f7d\u3002<\/li>\n
    • \u51fa\u73b0\u5f02\u5e38\u7acb\u5373\u628a\u8bfb\u6d41\u91cf\u5207\u56de\u65e7 Key；\u95ee\u9898\u7a33\u5b9a\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u505c\u6b62\u65e7\u5199\u5e76\u5ef6\u8fdf\u6e05\u7406\u3002<\/li>\n

      \u53cc\u5199\u4e0d\u662f\u201c\u5929\u7136\u4e00\u81f4\u201d\u3002\u9700\u8981\u5b9a\u4e49\u5199\u5165\u987a\u5e8f\u3001\u90e8\u5206\u5931\u8d25\u8865\u507f\u3001\u5e42\u7b49\u952e\u3001\u7248\u672c\u6bd4\u8f83\u548c\u544a\u8b66\u3002\u9762\u8bd5\u5b98\u8ffd\u95ee\u201c\u5982\u679c\u4e00\u4e2a\u526f\u672c\u5199\u5931\u8d25\u600e\u4e48\u529e\u201d，\u5e94\u56de\u7b54：\u4ee5\u7248\u672c\u53f7\u6216\u53d8\u66f4\u65e5\u5fd7\u8bc6\u522b\u4e0d\u4e00\u81f4，\u5931\u8d25\u8fdb\u5165\u53ef\u91cd\u8bd5\u961f\u5217，\u8bfb\u8def\u5f84\u5728\u8fc1\u79fb\u671f\u53ef\u6821\u9a8c\u7248\u672c\u5e76\u56de\u9000\u65e7 Key\u3002<\/p>\n

      \u4e03\u3001\u5982\u4f55\u9a8c\u6536：\u7528\u524d\u540e\u5bf9\u6bd4\u8bc1\u660e\u62c6\u5206\u771f\u7684\u6709\u6548<\/h3>\n

      \u6210\u529f\u6807\u51c6\u5fc5\u987b\u5728\u4e0a\u7ebf\u524d\u5199\u6e05\u695a\u3002\u81f3\u5c11\u8bb0\u5f55\u8fd9\u4e9b\u57fa\u7ebf\u4e0e\u53d1\u5e03\u540e\u7ed3\u679c：<\/p>\n

        \n
      • \u70ed\u70b9\u8282\u70b9 CPU\u3001\u7f51\u7edc\u5165\u51fa\u548c\u6bcf\u79d2\u547d\u4ee4\u6570\u4e0b\u964d，\u8282\u70b9\u95f4\u8d1f\u8f7d\u5dee\u6536\u655b；<\/li>\n
      • \u63a5\u53e3 P95\/P99\u3001\u8d85\u65f6\u7387\u548c\u9519\u8bef\u7387\u56de\u5230\u4e1a\u52a1 SLO；<\/li>\n
      • N \u4e2a\u7269\u7406 Key \u7684\u8bbf\u95ee\u91cf\u5206\u5e03\u7b26\u5408\u9884\u671f，\u6ca1\u6709\u4ea7\u751f\u65b0\u7684\u5355\u6876\u70ed\u70b9；<\/li>\n
      • \u7f13\u5b58\u547d\u4e2d\u7387\u6ca1\u6709\u660e\u663e\u4e0b\u964d，\u6570\u636e\u5e93\u56de\u6e90 QPS \u6ca1\u6709\u5f02\u5e38\u5347\u9ad8；<\/li>\n
      • \u53cc\u5199\u5931\u8d25\u3001\u7248\u672c\u5dee\u5f02\u3001\u8865\u507f\u79ef\u538b\u5747\u4f4e\u4e8e\u9884\u8bbe\u9608\u503c；<\/li>\n
      • \u6545\u969c\u6f14\u7ec3\u80fd\u5728\u76ee\u6807\u65f6\u95f4\u5185\u5207\u56de\u65e7 Key\u3002<\/li>\n<\/ul>\n

        \u4e0d\u8981\u7ed9\u6240\u6709\u516c\u53f8\u5957\u4e00\u4e2a\u201cCPU \u4f4e\u4e8e 60%\u201d\u7684\u4e07\u80fd\u9608\u503c\u3002\u6b63\u786e\u7b54\u6848\u662f：\u4e0a\u7ebf\u524d\u6839\u636e\u5f53\u524d\u5cf0\u503c\u3001\u5386\u53f2\u6296\u52a8\u548c SLO \u51bb\u7ed3\u672c\u7cfb\u7edf\u7684\u9608\u503c，\u5e76\u7528\u540c\u4e00\u65f6\u95f4\u7a97\u53e3\u505a\u524d\u540e\u5bf9\u6bd4\u3002<\/p>\n

        \u5931\u8d25\u5206\u652f\u600e\u4e48\u5904\u7406<\/h4>\n
          \n
        • \u5404\u8282\u70b9\u90fd\u9ad8：\u56de\u5230\u603b\u5bb9\u91cf\u3001\u6162\u547d\u4ee4\u3001\u8fde\u63a5\u6c60\u548c\u4e1a\u52a1\u6d41\u91cf\u6392\u67e5，\u4e0d\u8981\u8bef\u5224\u5355 Key\u3002<\/li>\n
        • \u53ea\u6709\u7f51\u7edc\u9ad8\u3001CPU \u4e0d\u9ad8：\u68c0\u67e5\u503c\u5927\u5c0f\u3001\u5e8f\u5217\u5316\u3001\u6279\u91cf\u547d\u4ee4\u548c\u5ba2\u6237\u7aef\u8bfb\u53d6\u6a21\u5f0f，\u53ef\u80fd\u662f\u5927 Key \u6216\u5e26\u5bbd\u95ee\u9898\u3002<\/li>\n
        • \u62c6\u5206\u540e\u6570\u636e\u5e93 QPS \u66b4\u6da8：\u901a\u5e38\u662f\u526f\u672c\u540c\u65f6\u8fc7\u671f\u6216\u56de\u6e90\u672a\u5408\u5e76，\u8865 TTL \u6296\u52a8\u3001SingleFlight \u548c\u9884\u70ed\u3002<\/li>\n
        • \u65b0\u65e7\u7ed3\u679c\u4e0d\u4e00\u81f4：\u505c\u6b62\u6269\u5927\u7070\u5ea6，\u6309\u7248\u672c\u548c\u53d8\u66f4\u65e5\u5fd7\u5b9a\u4f4d\u53cc\u5199\u7f3a\u53e3，\u8bfb\u6d41\u91cf\u56de\u9000\u65e7 Key\u3002<\/li>\n
        • \u6269\u5bb9\u540e\u70ed\u70b9\u4ecd\u5728\u539f\u8282\u70b9：\u68c0\u67e5\u540c\u4e00 Key\u3001Hash Tag \u548c Slot \u5206\u914d；Reshard \u4e0d\u4f1a\u81ea\u52a8\u62c6\u5f00\u4e00\u4e2a Key\u3002<\/li>\n<\/ul>\n

          \u516b\u3001\u9762\u8bd5\u5b98\u8fde\u7eed\u4e94\u95ee：\u6bcf\u4e00\u95ee\u5728\u8003\u4ec0\u4e48<\/h3>\n

          \u8ffd\u95ee\u4e00：\u4f60\u600e\u4e48\u8bc1\u660e\u662f\u70ed Key，\u800c\u4e0d\u662f\u5927 Key？<\/h4>\n

          \u5f97\u5206\u70b9：\u4ece\u5e94\u7528 QPS\u3001\u8282\u70b9\u503e\u659c\u3001\u5019\u9009 Key \u8bbf\u95ee\u9891\u6b21\u3001Value \u5927\u5c0f\u548c Slot \u4e94\u5c42\u53d6\u8bc1；\u8bf4\u660e –hotkeys \u7684 LFU \u524d\u63d0；\u907f\u514d\u76f4\u63a5\u5728\u751f\u4ea7\u957f\u65f6\u95f4 MONITOR\u3002<\/p>\n

          \u8ffd\u95ee\u4e8c：\u4e3a\u4ec0\u4e48\u52a0 Redis \u8282\u70b9\u6ca1\u6709\u89e3\u51b3？<\/h4>\n

          \u5f97\u5206\u70b9：\u8bf4\u6e05 16384 \u4e2a Slot\u3001\u5355 Key \u53ea\u843d\u4e00\u4e2a Slot\u3001\u6269\u5bb9\u53ea\u80fd\u8fc1\u79fb Slot，\u4e0d\u80fd\u62c6\u4e00\u4e2a Key；\u6307\u51fa Hash Tag \u53ef\u80fd\u628a\u591a\u4e2a Key \u4e3b\u52a8\u56fa\u5b9a\u5230\u540c\u4e00 Slot\u3002<\/p>\n

          \u8ffd\u95ee\u4e09：\u672c\u5730\u7f13\u5b58\u600e\u4e48\u4fdd\u8bc1\u4e00\u81f4\u6027？<\/h4>\n

          \u5f97\u5206\u70b9：\u5148\u58f0\u660e\u53ef\u63a5\u53d7\u7684\u4e0d\u4e00\u81f4\u7a97\u53e3，\u518d\u8bf4\u77ed TTL\u3001\u4e3b\u52a8\u5931\u6548\u3001\u7248\u672c\u53f7\u3001\u65ad\u7ebf\u5904\u7406\u548c\u56de\u6e90\u5408\u5e76；\u4e0d\u627f\u8bfa\u5f3a\u4e00\u81f4\u3002<\/p>\n

          \u8ffd\u95ee\u56db：\u62c6\u6210 16 \u4e2a Key \u540e\u5982\u4f55\u66f4\u65b0？<\/h4>\n

          \u5f97\u5206\u70b9：\u7248\u672c\u5316 Key\u3001\u53cc\u5199\u6216\u5931\u6548\u5e7f\u64ad\u3001\u90e8\u5206\u5931\u8d25\u8865\u507f\u3001\u5e42\u7b49\u3001\u5f71\u5b50\u8bfb\u6bd4\u5bf9，\u4ee5\u53ca\u80fd\u591f\u56de\u6eda\u3002<\/p>\n

          \u8ffd\u95ee\u4e94：\u4e0a\u7ebf\u540e\u770b\u54ea\u4e9b\u6307\u6807？<\/h4>\n

          \u5f97\u5206\u70b9：\u5206\u7247 CPU\/\u7f51\u7edc\/QPS \u7684\u5747\u8861\u5ea6，\u4e1a\u52a1 P99 \u548c\u9519\u8bef\u7387，\u7f13\u5b58\u547d\u4e2d\u3001\u6570\u636e\u5e93\u56de\u6e90\u3001\u7248\u672c\u5dee\u5f02\u4e0e\u56de\u6eda\u8017\u65f6；\u6307\u6807\u5fc5\u987b\u548c SLO\u3001\u53d1\u5e03\u524d\u57fa\u7ebf\u7ed1\u5b9a\u3002 \"\"<\/p>\n

          \u4e5d\u3001\u4e00\u4e2a\u53ef\u590d\u7528\u7684 100 \u5206\u8bc4\u5206\u8868<\/h3>\n\n\u7ef4\u5ea6\u5206\u503c\u6ee1\u5206\u8868\u73b0<\/tr>\n\n\n\n\n\n\n
          \u5b9a\u4e49\u4e0e\u53d6\u8bc1<\/td>\n25<\/td>\n\u533a\u5206\u70ed Key\/\u5927 Key，\u7528\u5e94\u7528\u3001\u8282\u70b9\u3001Key\u3001Slot \u5f62\u6210\u8bc1\u636e\u94fe<\/td>\n<\/tr>\n
          \u6b62\u635f\u65b9\u6848<\/td>\n20<\/td>\n\u7f13\u5b58\u3001\u8bf7\u6c42\u5408\u5e76\u3001\u9650\u6d41\u3001\u8bfb\u526f\u672c\u5747\u8bf4\u660e\u9002\u7528\u8fb9\u754c<\/td>\n<\/tr>\n
          \u6839\u6cbb\u4e0e\u4e00\u81f4\u6027<\/td>\n25<\/td>\n\u6309\u8bed\u4e49\u62c6\u5206，\u8986\u76d6\u7248\u672c\u3001\u66f4\u65b0\u3001\u5931\u6548\u3001\u8865\u507f<\/td>\n<\/tr>\n
          \u7070\u5ea6\u4e0e\u56de\u6eda<\/td>\n15<\/td>\n\u53cc\u5199\u3001\u56de\u586b\u3001\u5f71\u5b50\u8bfb\u3001\u9010\u7ea7\u5207\u6d41\u3001\u53ef\u56de\u9000<\/td>\n<\/tr>\n
          \u9a8c\u6536\u4e0e\u8868\u8fbe<\/td>\n15<\/td>\n\u6307\u6807\u7ed1\u5b9a SLO，\u7ed3\u6784\u5316\u56de\u7b54\u8ffd\u95ee，\u4e0d\u80cc\u4e07\u80fd\u9608\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u4f4e\u5206\u7b54\u6848\u901a\u5e38\u53ea\u6709\u201c\u52a0\u673a\u5668\u3001\u52a0\u672c\u5730\u7f13\u5b58\u3001Key \u540e\u52a0\u968f\u673a\u6570\u201d\u4e09\u53e5\u8bdd；\u4e2d\u7b49\u7b54\u6848\u80fd\u7ed9\u65b9\u6848，\u4f46\u6ca1\u6709\u8bc1\u636e\u3001\u8fc1\u79fb\u548c\u56de\u6eda；\u9ad8\u5206\u7b54\u6848\u4f1a\u5148\u5efa\u7acb\u5224\u65ad\u6761\u4ef6，\u518d\u5206\u522b\u56de\u7b54\u6b62\u635f\u3001\u6839\u6cbb\u3001\u4e00\u81f4\u6027\u548c\u9a8c\u6536\u3002<\/p>\n

          \u5341\u300190 \u79d2\u53ef\u590d\u8ff0\u7b54\u6848<\/h3>\n

          \u6211\u4f1a\u5148\u533a\u5206\u70ed Key \u548c\u5927 Key，\u4e0d\u4f1a\u76f4\u63a5\u52a0\u8282\u70b9\u3002\u5148\u770b\u63a5\u53e3 QPS\u3001\u91cd\u8bd5\u548c\u7f13\u5b58\u547d\u4e2d，\u518d\u6bd4\u8f83 Redis \u5404\u8282\u70b9\u7684 CPU\u3001\u7f51\u7edc\u3001\u547d\u4ee4\u91cf\u548c P99，\u786e\u8ba4\u662f\u5426\u5355\u8282\u70b9\u503e\u659c\u3002\u4e4b\u540e\u7528\u5e94\u7528\u6216\u4ee3\u7406\u5c42 Top Key\u3001\u91c7\u6837\u65e5\u5fd7\u5b9a\u4f4d\u5019\u9009 Key；\u5982\u679c\u5b9e\u4f8b\u91c7\u7528 LFU，\u53ef\u4ee5\u7528 –hotkeys \u548c OBJECT FREQ \u8f85\u52a9，\u518d\u7528 CLUSTER KEYSLOT \u786e\u8ba4 Slot\u3002MONITOR \u4e0d\u4f5c\u4e3a\u5e38\u89c4\u751f\u4ea7\u624b\u6bb5\u3002<\/p>\n

          \u6b62\u635f\u9636\u6bb5\u4f1a\u6839\u636e\u4e00\u81f4\u6027\u8981\u6c42\u4f7f\u7528\u77ed TTL \u672c\u5730\u7f13\u5b58\u3001SingleFlight\u3001\u9650\u6d41\u964d\u7ea7，\u8bfb\u591a\u5199\u5c11\u4e14\u53ef\u63a5\u53d7\u590d\u5236\u5ef6\u8fdf\u65f6\u624d\u8003\u8651\u8bfb\u526f\u672c\u3002\u6839\u6cbb\u65f6\u6309\u4e1a\u52a1\u8bed\u4e49\u628a\u4e00\u4e2a\u903b\u8f91\u70ed\u70b9\u62c6\u6210\u591a\u4e2a\u7269\u7406 Key，\u8ba9\u5b83\u4eec\u5206\u6563\u5230\u4e0d\u540c Slot，\u540c\u65f6\u8bbe\u8ba1\u7248\u672c\u53f7\u3001\u5931\u6548\u548c\u5931\u8d25\u8865\u507f，\u6ce8\u610f\u4e0d\u80fd\u590d\u7528\u76f8\u540c Hash Tag\u3002<\/p>\n

          \u4e0a\u7ebf\u91c7\u7528\u7248\u672c\u5316 Key\u3001\u53cc\u5199\u3001\u9650\u901f\u56de\u586b\u3001\u5f71\u5b50\u8bfb\u6bd4\u5bf9\u548c\u9010\u7ea7\u7070\u5ea6；\u5f02\u5e38\u5c31\u5207\u56de\u65e7 Key\u3002\u6700\u7ec8\u7528\u8282\u70b9\u8d1f\u8f7d\u5747\u8861\u5ea6\u3001\u63a5\u53e3 P99\u3001\u9519\u8bef\u7387\u3001\u7f13\u5b58\u547d\u4e2d\u3001\u6570\u636e\u5e93\u56de\u6e90\u548c\u7248\u672c\u5dee\u5f02\u9a8c\u6536，\u800c\u4e0d\u662f\u5957\u4e00\u4e2a\u56fa\u5b9a\u9608\u503c\u3002<\/p>\n

          \u5341\u4e00\u3001\u5b98\u65b9\u8d44\u6599\u4e0e\u590d\u6838\u8fb9\u754c<\/h3>\n

          \u672c\u6587\u6280\u672f\u8fb9\u754c\u4e8e 2026-08-27 \u6309 Redis \u5b98\u65b9\u8d44\u6599\u590d\u6838：<\/p>\n

            \n
          • redis-cli \u626b\u63cf\u3001bigkeys\u3001hotkeys \u4e0e MONITOR<\/li>\n
          • OBJECT FREQ \u547d\u4ee4\u8bf4\u660e<\/li>\n
          • Redis \u5ba2\u6237\u7aef\u4fa7\u7f13\u5b58\u4e0e\u5931\u6548\u901a\u77e5<\/li>\n
          • Redis Cluster \u89c4\u8303：16384 Slots\u3001Hash Tag\u3001MOVED \u4e0e ASK<\/li>\n<\/ul>\n

            \u5de5\u5177\u53c2\u6570\u548c\u5ba2\u6237\u7aef\u80fd\u529b\u4f1a\u968f\u7248\u672c\u53d8\u5316；\u5b9e\u9645\u64cd\u4f5c\u524d\u5e94\u5728\u6d4b\u8bd5\u73af\u5883\u6838\u5bf9\u5f53\u524d Redis \u7248\u672c\u3001\u6dd8\u6c70\u7b56\u7565\u3001\u4ee3\u7406\u5c42\u548c\u4e91\u5382\u5546\u9650\u5236\u3002\u672c\u6587\u6ca1\u6709\u628a\u65e0\u6cd5\u6838\u9a8c\u6765\u6e90\u7684\u516c\u53f8\u540d\u79f0\u6216\u201c\u539f\u9898\u201d\u5f53\u4f5c\u4e8b\u5b9e，\u53ea\u8ba8\u8bba\u53ef\u590d\u73b0\u7684\u901a\u7528\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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            \n\u9002\u5408\u51c6\u5907 Java \u540e\u7aef\u6821\u62db\u3001\u793e\u62db\u548c\u7cfb\u7edf\u8bbe\u8ba1\u9762\u8bd5，\u4e5f\u9002\u5408\u6b63\u5728\u5904\u7406 Redis Cluster \u5c40\u90e8\u8fc7\u8f7d\u7684\u5f00\u53d1\u8005\u3002\u8bfb\u5b8c\u4f60\u5c06\u5f97\u5230\u4e00\u6761\u80fd\u843d\u5730\u7684\u8bc1\u636e\u94fe：\u5148\u8bc1\u660e\u662f\u70ed Key \u548c\u5355\u5206\u7247\u74f6\u9888，\u518d\u6b62\u635f\u3001\u62c6\u5206\u3001\u7070\u5ea6\u8fc1\u79fb，\u6700\u540e\u7528\u6307\u6807\u9a8c\u6536；\u6587\u672b\u8fd8\u6709\u9762\u8bd5\u5b98\u4e94\u8f6e\u8ffd\u95ee\u548c\u4e00\u4efd 90 \u79d2\u56de\u7b54\u3002
            \n\u5148\u7ed9\u7ed3\u8bba：<\/p>\n","protected":false},"author":2,"featured_media":96092,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,230,105],"topic":[],"class_list":["post-96095","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-java","tag-php","tag-redis"],"yoast_head":"\n\u5927\u5382 Java \u540e\u7aef\u573a\u666f\u9898\uff1aRedis \u70ed Key \u6253\u6ee1\u5355\u5206\u7247\uff0c\u5982\u4f55\u6392\u67e5\u3001\u62c6\u5206\u4e0e\u56de\u7b54\u8ffd\u95ee - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/96095.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5927\u5382 Java \u540e\u7aef\u573a\u666f\u9898\uff1aRedis \u70ed Key \u6253\u6ee1\u5355\u5206\u7247\uff0c\u5982\u4f55\u6392\u67e5\u3001\u62c6\u5206\u4e0e\u56de\u7b54\u8ffd\u95ee - 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