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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
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LPUSH key value [value ...]

自1.0.0起可用。

時(shí)間復(fù)雜度: O(1)

將所有指定值插入存儲(chǔ)在列表頭部的位置key。如果key不存在,則在執(zhí)行推送操作之前將其創(chuàng)建為空列表。當(dāng)key保存不是列表的值時(shí),將返回錯(cuò)誤。

可以使用單個(gè)命令調(diào)用來推送多個(gè)元素,只需在命令末尾指定多個(gè)參數(shù)即可。元素被一個(gè)接一個(gè)地插入列表頭部,從最左邊的元素到最右邊的元素。因此,例如,該命令LPUSH mylist a b c將導(dǎo)致包含c第一個(gè)元素,b第二個(gè)元素和a第三個(gè)元素的列表。

返回值

整數(shù)回復(fù):推送操作后列表的長度。

歷史

  • >= 2.4:接受多個(gè)value參數(shù)。在2.4以前的Redis版本中,可以為每個(gè)命令推送一個(gè)值。

例子

redis>  LPUSH mylist "world" (integer) 1 

redis>  LPUSH mylist "hello" (integer) 2 

redis>  LRANGE mylist 0 -1 1) "hello" 2) "world"

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