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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
characters

KEYS pattern

自1.0.0起可用。

時(shí)間復(fù)雜度: O(N),其中N是數(shù)據(jù)庫(kù)中的鍵的數(shù)量,假設(shè)數(shù)據(jù)庫(kù)中的鍵名和給定模式的長(zhǎng)度有限。

返回所有匹配的鍵pattern。

雖然此操作的時(shí)間復(fù)雜度為O(N),但常數(shù)時(shí)間相當(dāng)短。例如,運(yùn)行在入門(mén)級(jí)筆記本電腦上的 Redis 可以在40毫秒內(nèi)掃描一百萬(wàn)個(gè)密鑰數(shù)據(jù)庫(kù)。

警告:將 KEYS 視為僅應(yīng)在生產(chǎn)環(huán)境中謹(jǐn)慎使用的命令。在對(duì)大型數(shù)據(jù)庫(kù)執(zhí)行它時(shí)可能會(huì)損壞性能。此命令用于調(diào)試和特殊操作,例如更改您的密鑰空間布局。請(qǐng)勿在常規(guī)應(yīng)用程序代碼中使用KEYS。如果您正在尋找一種方法在您的密鑰空間的子集中查找密鑰,請(qǐng)考慮使用 SCAN 或集合。

支持的全局樣式模式:

  • h?llo matches hello, hallo and hxllo

  • h*llo matches hllo and heeeello

  • h[ae]llo matches hello and hallo, but not hillo

  • h[^e]llo matches hallo, hbllo, ... but not hello

  • h[a-b]llo matches hallo and hbllo

\如果您想逐字匹配,請(qǐng)使用轉(zhuǎn)義特殊字符。

返回值

陣列回復(fù):密鑰匹配列表pattern。

例子

redis>  MSET one 1 two 2 three 3 four 4 "OK" 

redis>  KEYS *o* 1) "one" 2) "four" 3) "two" 

redis>  KEYS t?? 1) "two" 

redis>  KEYS * 1) "three" 2) "one" 3) "four" 4) "two"

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