// 3
await redis.sadd("key", "a", "b", "c"); 

// 0
await redis.sadd("key", "a", "b");

​
Arguments

​
key
string
required
The key of the set.
​
members
...TValue[]
required
One or more members to add to the set.

​
Response

The number of elements that were added to the set, not including all the elements already present in the set.
// 3
await redis.sadd("key", "a", "b", "c"); 

// 0
await redis.sadd("key", "a", "b");