redis SADD command
Translation results：
UK [sæd] US [sæd]
n. (The upper reaches of the White Nile) large floating plants
redis SADD commandsyntax
Function:Add one or more member elements to the set key. Member elements that already exist in the set will be ignored.
Syntax: SADD key member [member ...]
Description: If key does not exist, create one containing only member elements collection of members. When key is not a collection type, an error is returned. Before Redis 2.4, SADD only accepted a single member value.
Available versions: >= 1.0.0
Time complexity: O(N), N is the number of elements being added .
Returns: The number of new elements added to the collection, excluding ignored elements.
redis SADD commandexample
# 添加单个元素 redis> SADD bbs "discuz.net" (integer) 1 # 添加重复元素 redis> SADD bbs "discuz.net" (integer) 0 # 添加多个元素 redis> SADD bbs "tianya.cn" "groups.google.com" (integer) 2 redis> SMEMBERS bbs 1) "discuz.net" 2) "groups.google.com" 3) "tianya.cn"