redis SMOVE command
Translation results：
move
UK[mu:v] 美[muv]
vt.& vi. move, move
vi.action ; move; progress; (machine, etc.) start
vt. propose; move; shake; change
n. change; migrate
Third person singular: moves plural: moves Present participle: moving Past tense: moved Past participle: moved
redis SMOVE commandsyntax
Function: Move the member element from the source collection to the destination collection.
Syntax: SMOVE source destination member
Explanation: SMOVE is an atomic operation. If the source collection does not exist or does not contain the specified member element, the SMOVE command does nothing and simply returns 0 . Otherwise, the member element is removed from the source collection and added to the destination collection. When the destination collection already contains a member element, the SMOVE command simply deletes the member element from the source collection. When source or destination is not a collection type, an error is returned.
Available versions: >= 1.0.0
Time complexity: O(1)
Return: If the member element is successfully removed, return 1. If the member element is not a member of the source collection and no operations are performed on the destination collection, then 0 is returned.
redis SMOVE commandexample
redis> SMEMBERS songs 1) "Billie Jean" 2) "Believe Me" redis> SMEMBERS my_songs (empty list or set) redis> SMOVE songs my_songs "Believe Me" (integer) 1 redis> SMEMBERS songs 1) "Billie Jean" redis> SMEMBERS my_songs 1) "Believe Me"