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Redis Related dictionaries

del Translation example syntax

dump Translation example syntax

exists Translation example syntax

expire Translation example syntax

expireat Translation example syntax

keys Translation example syntax

migrate Translation example syntax

move Translation example syntax

object Translation example syntax

presist Translation example syntax

pexpire Translation example syntax

pexpireat Translation example syntax

pttl Translation example syntax

randomkey Translation example syntax

rename Translation example syntax

renamenx Translation example syntax

restore Translation example syntax

sort Translation example syntax

ttl Translation example syntax

type Translation example syntax

scan Translation example syntax

bitcount Translation example syntax

bitop Translation example syntax

append Translation example syntax

decr Translation example syntax

decrby Translation example syntax

get Translation example syntax

getbit Translation example syntax

getrange Translation example syntax

getset Translation example syntax

incr Translation example syntax

incrby Translation example syntax

incrbyfloat Translation example syntax

mget Translation example syntax

mset Translation example syntax

msetnx Translation example syntax

psetex Translation example syntax

set Translation example syntax

setbit Translation example syntax

setex Translation example syntax

setnx Translation example syntax

setrange Translation example syntax

strlen Translation example syntax

hdel Translation example syntax

hexists Translation example syntax

hget Translation example syntax

hgetall Translation example syntax

hincrby Translation example syntax

hincrbyfloat Translation example syntax

hkeys Translation example syntax

hlen Translation example syntax

hmget Translation example syntax

hmset Translation example syntax

hset Translation example syntax

hsetnx Translation example syntax

hvals Translation example syntax

blpop Translation example syntax

brpop Translation example syntax

brpoplpush Translation example syntax

lindex Translation example syntax

linsert Translation example syntax

llen Translation example syntax

lpop Translation example syntax

lpush Translation example syntax

lpushx Translation example syntax

lrange Translation example syntax

lrem Translation example syntax

lset Translation example syntax

ltrim Translation example syntax

rpop Translation example syntax

rpoplpush Translation example syntax

rpush Translation example syntax

rpushx Translation example syntax

sadd Translation example syntax

scard Translation example syntax

sdiff Translation example syntax

sdiffstore Translation example syntax

sinter Translation example syntax

sinterstore Translation example syntax

sismember Translation example syntax

smembers Translation example syntax

smove Translation example syntax

spop Translation example syntax

srandmember Translation example syntax

srem Translation example syntax

sunion Translation example syntax

sunionstore Translation example syntax

zadd Translation example syntax

zcard Translation example syntax

zcount Translation example syntax

zincrby Translation example syntax

zrange Translation example syntax

zrangebyscore Translation example syntax

zrank Translation example syntax

zrem Translation example syntax

zremrangebyrank Translation example syntax

zremrangebyscore Translation example syntax

zrevrange Translation example syntax

zrevrangebyscore Translation example syntax

zrevrank Translation example syntax

redis RANDOMKEY command

Chinese translationRecent Updates：2018-05-16 09:29:18

random

UK[ˈrændəm] US[ˈrændəm]

adj.Random; arbitrary; random

n.Random; Accidental action

key

UK[ki:] US[ki]

n.Key; (of a typewriter, etc.) key; key, clue, secret; (of music) key

vt. Type; lock; adjust the tone of...; provide clue

vi. use key

adj. key; Main

Third person singular: keys Plural: keys Present participle: keying Past tense: keyed Past participle: keyed

redis RANDOMKEY command Video explanation

redis RANDOMKEY command syntax

Function: Randomly return (without deleting) a key from the current database.

Syntax: RANDOMKEY

Description: >= 1.0.0

Time complexity: O(1)

Return: When the database is not empty, return a key. When the database is empty, nil is returned.

redis RANDOMKEY command example

# 数据库不为空
redis> MSET fruit "apple" drink "beer" food "cookies"   # 设置多个 key
OK
redis> RANDOMKEY
"fruit"
redis> RANDOMKEY
"food"
redis> KEYS *    # 查看数据库内所有key，证明 RANDOMKEY 并不删除 key
1) "food"
2) "drink"
3) "fruit"
# 数据库为空
redis> FLUSHDB  # 删除当前数据库所有 key
OK
redis> RANDOMKEY
(nil)

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