ZUNIONSTORE

Writes the union between sets to a new key.

Arguments

destination · string · required

The key to write the union to.

keys · integer · required

How many keys to compare.

keys · string | string[] · required

The keys to compare.

options

aggregate · sum | min | max

The aggregation method.

weight · number

The weight to apply to each key.

weights · number[]

The weights to apply to each key.

Response

The number of elements in the resulting set.

Simple

await redis.zadd(
    "key1", 
    { score: 1, member: "member1" },
)
await redis.zadd(
    "key2",
    { score: 1, member: "member1" },
    { score: 2, member: "member2" },
)

const res = await redis.zunionstore("destination", 2, ["key1", "key2"]);
console.log(res) // 2