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Clustercluster addslots(集群 槽位)cluster count failure reports(集群计数失败报告)cluster countkeysinslotcluster delslotscluster failovercluster forgetcluster getkeysinslotcluster infocluster keyslot(集群键槽)cluster meetcluster nodes(集群节点)cluster replicate(集群复制)cluster reset(集群重置)cluster saveconfigcluster set config epochcluster setslotcluster slavescluster slotsreadonlyreadwriteConnectionauthechopingquitselectswapdbGeogeoaddgeodistgeohashgeoposgeoradiusgeoradiusbymemberHasheshdelhexistshgethgetallhincrbyhincrbyfloathkeyshlenhmgethmsethscanhsethsetnxhstrlenhvalsHyperLogLogpfaddpfcountpfmergeKeysdeldumpexistsexpireexpireatkeysmigratemoveobjectpersistpexpirepexpireatpttlrandomkeyrenamerenamenxrestorescansorttouchttltypeunlinkwaitListsblpopbrpopbrpoplpushlindexlinsertllenlpoplpushlpushxlrangelremlsetltrimrpoprpoplpushrpushrpushxPub/SubpsubscribepublishpubsubpunsubscribesubscribeunsubscribeScriptingevalevalshascript debugscript existsscript flushscript killscript loadServerbgrewriteaofbgsaveclient getnameclient killclient listclient pauseclient replyclient setnamecommandcommand countcommand getkeyscommand infoconfig getconfig resetstatconfig rewriteconfig setdbsizedebug objectdebug segfaultflushallflushdbinfolastsavemonitorrolesaveshutdownslaveofslowlogtimeSetssaddscardsdiffsdiffstoresintersinterstoresismembersmemberssmovespopsrandmembersremsscansunionsunionstoreSorted SetszaddzcardzcountzincrbyzinterstorezlexcountzrangezrangebylexzrangebyscorezrankzremzremrangebylexzremrangebyrankzremrangebyscorezrevrangezrevrangebylexzrevrangebyscorezrevrankzscanzscorezunionstoreStringsappendbitcountbitfieldbitopbitposdecrdecrbygetgetbitgetrangegetsetincrincrbyincrbyfloatmgetmsetmsetnxpsetexsetsetbitsetexsetnxsetrangestrlenTransactionsdiscardexecmultiunwatchwatch
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LINDEX key index

自1.0.0起可用。

时间复杂度: O(N)其中N是要到达索引处元素的遍历元素的数量。这使得询问列表O(1)的第一个或最后一个元素。

返回index存储在列表中的索引处的元素key。该索引是基于零的,因此0意味着第一个元素,1第二个元素等等。负数索引可用于指定从列表尾部开始的元素。这里-1意味着最后一个元素,-2意味着倒数第二个元素等等。

当值 key不是列表时,返回错误。

返回值

批量字符串回复:请求的元素返回nilindex超出范围。

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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