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Cluster cluster addslots(集群 槽位) cluster count failure reports(集群計(jì)數(shù)失敗報(bào)告) cluster countkeysinslot cluster delslots cluster failover cluster forget cluster getkeysinslot cluster info cluster keyslot(集群鍵槽) cluster meet cluster nodes(集群節(jié)點(diǎn)) cluster replicate(集群復(fù)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
characters

UNLINK key [key ...]

自4.0.0起可用。

時(shí)間復(fù)雜度: O(1)每個(gè)鍵被刪除而不管其大小。然后,命令O(N)在另一個(gè)線程中工作以回收內(nèi)存,其中N是分配組成的已刪除對象的分配數(shù)量。

該命令與 DEL 非常類似:它刪除指定的鍵。就像 DEL 鍵一樣,如果它不存在,它將被忽略。但是,該命令在不同的線程中執(zhí)行實(shí)際的內(nèi)存回收,因此它不會(huì)被阻塞,而 DEL 是。這是命令名稱的來源:該命令只是鍵與鍵空間斷開連接。實(shí)際的刪除將在晚些時(shí)候異步完成。

返回值

整數(shù)回復(fù):未鏈接的鍵數(shù)。

例子

redis>  SET key1 "Hello" "OK" 

redis>  SET key2 "World" "OK" 

redis>  UNLINK key1 key2 key3 ERR Unknown or disabled command 'UNLINK'

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