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Cluster cluster addslots(集群 槽位) cluster count failure reports(集群计数失败报告) cluster countkeysinslot cluster delslots cluster failover cluster forget cluster getkeysinslot cluster info cluster keyslot(集群键槽) cluster meet cluster nodes(集群节点) cluster replicate(集群复制) cluster reset(集群重置) cluster saveconfig cluster set config epoch cluster setslot cluster slaves cluster slots readonly readwrite Connection auth echo ping quit select swapdb Geo geoadd geodist geohash geopos georadius georadiusbymember Hashes hdel hexists hget hgetall hincrby hincrbyfloat hkeys hlen hmget hmset hscan hset hsetnx hstrlen hvals HyperLogLog pfadd pfcount pfmerge Keys del dump exists expire expireat keys migrate move object persist pexpire pexpireat pttl randomkey rename renamenx restore scan sort touch ttl type unlink wait Lists blpop brpop brpoplpush lindex linsert llen lpop lpush lpushx lrange lrem lset ltrim rpop rpoplpush rpush rpushx Pub/Sub psubscribe publish pubsub punsubscribe subscribe unsubscribe Scripting eval evalsha script debug script exists script flush script kill script load Server bgrewriteaof bgsave client getname client kill client list client pause client reply client setname command command count command getkeys command info config get config resetstat config rewrite config set dbsize debug object debug segfault flushall flushdb info lastsave monitor role save shutdown slaveof slowlog time Sets sadd scard sdiff sdiffstore sinter sinterstore sismember smembers smove spop srandmember srem sscan sunion sunionstore Sorted Sets zadd zcard zcount zincrby zinterstore zlexcount zrange zrangebylex zrangebyscore zrank zrem zremrangebylex zremrangebyrank zremrangebyscore zrevrange zrevrangebylex zrevrangebyscore zrevrank zscan zscore zunionstore Strings append bitcount bitfield bitop bitpos decr decrby get getbit getrange getset incr incrby incrbyfloat mget mset msetnx psetex set setbit setex setnx setrange strlen Transactions discard exec multi unwatch watch
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CLUSTER KEYSLOT key

自3.0.0起可用。

时间复杂度: O(N)其中N是密钥中的字节数

返回一个整数,用于标识指定密钥散列到的散列槽。该命令主要用于调试和测试,因为它通过 API 公开了哈希算法的底层 Redis 实现。此命令的示例用例:

1. 客户端库可以使用 Redis 来测试他们自己的散列算法,生成随机密钥并用它们的本地实现和使用 Redis CLUSTER KEYSLOT 命令散列它们,然后检查结果是否相同。

2. 人类可以使用此命令来检查什么是散列槽,然后是关联的 Redis 集群节点,负责给定的密钥。

示例

> CLUSTER KEYSLOT somekey11058> CLUSTER KEYSLOT foo{hash_tag}(integer) 2515> CLUSTER KEYSLOT bar{hash_tag}(integer) 2515

请注意,该命令实现了完整的散列算法,包括对散列标签的支持,这是 Redis Cluster 密钥散列算法的特殊属性,用于哈希中间的内容{以及}如果在密钥名称内找到这样的模式,以便强制多个键由同一个节点处理。

返回值

整数回复:散列槽号。

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