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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
文字

SISMEMBER key member

自1.0.0起可用。

时间复杂度: O(1)

如果member是存储在中的集合的成员,则返回key

返回值

整数回复,具体为:

  • 1 如果元素是集合的成员。

  • 0如果元素不是集合的成员,或者key不存在。

例子

redis>  SADD myset "one" (integer) 1 

redis>  SISMEMBER myset "one" (integer) 1 

redis>  SISMEMBER myset "two" (integer) 0

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