redis SPOP command
Translation results：
pop
UK[pɒp] US[pɑ:p]
vi. (unexpectedly, suddenly) appear; appear suddenly; make a popping sound; (suddenly) action
vt. (suddenly) reach out; (suddenly) ask a question; (suddenly take out something prepared); strike
n.pop music ; soda; (especially used as a title) dad; (quickly marked)
adj. pop music; popular style; popular; modern
adv. explosion; bang
abbr.post office protocol
Third person singular: pops Plural: pops Present participle: popping Past tense: popped Past participle: popped
redis SPOP commandsyntax
Function: Remove and return a random element in the collection.
Syntax: SPOP key
Description: If you only want to get a random element, but do not want the element to be removed from the collection, You can use the SRANDMEMBER command.
Available versions: >= 1.0.0
Time complexity: O(1)
Returns: The random element that was removed. When key does not exist or key is the empty set, nil is returned.
redis SPOP commandexample
redis> SMEMBERS db 1) "MySQL" 2) "MongoDB" 3) "Redis" redis> SPOP db "Redis" redis> SMEMBERS db 1) "MySQL" 2) "MongoDB" redis> SPOP db "MySQL" redis> SMEMBERS db 1) "MongoDB"