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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TYPE key
自1.0.0起可用。
时间复杂度： O（1）
返回存储在的值的类型的字符串表示形式key。可以返回不同的类型有：string，list，set，zset和hash。
返回值
简单的字符串回复：类型key或none时key不存在。
例子
redis> SET key1 "value" "OK"
redis> LPUSH key2 "value" (integer) 1
redis> SADD key3 "value" (integer) 1
redis> TYPE key1 "string"
redis> TYPE key2 "list"
redis> TYPE key3 "set"