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目錄 搜尋
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
文字

LINDEX key index

自1.0.0起可用。

時(shí)間復(fù)雜度: O(N)其中N是要到達(dá)索引處元素的遍歷元素的數(shù)量。這使得詢問(wèn)列表O(1)的第一個(gè)或最后一個(gè)元素。

返回index存儲(chǔ)在列表中的索引處的元素key。該索引是基于零的,因此0意味著第一個(gè)元素,1第二個(gè)元素等等。負(fù)數(shù)索引可用于指定從列表尾部開(kāi)始的元素。這里-1意味著最后一個(gè)元素,-2意味著倒數(shù)第二個(gè)元素等等。

當(dāng)值 key不是列表時(shí),返回錯(cuò)誤。

返回值

批量字符串回復(fù):請(qǐng)求的元素返回nil當(dāng)index超出范圍。

例子

redis>  LPUSH mylist "World" (integer) 1 

redis>  LPUSH mylist "Hello" (integer) 2 

redis>  LINDEX mylist 0 "Hello" 

redis>  LINDEX mylist -1 "World" 

redis>  LINDEX mylist 3 (nil)

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