SINTER

Get the intersection of multiple sets

Returns the members of the set resulting from the intersection of all the given sets. Keys that do not exist are considered to be empty sets.

Usage

await redis.sinter(key, ...keys);

Parameters

key · string · required

The first set key

keys · string[]

Additional set keys to intersect with

Response

result · TData[]

An array containing the members of the resulting set (intersection of all sets)

Examples

Intersect two sets

await redis.sadd("set1", "a", "b", "c", "d");
await redis.sadd("set2", "c", "d", "e", "f");

const result = await redis.sinter("set1", "set2");
console.log(result); // ["c", "d"]

Intersect multiple sets

await redis.sadd("tags:post1", "javascript", "typescript", "react");
await redis.sadd("tags:post2", "typescript", "react", "node");
await redis.sadd("tags:post3", "react", "vue", "typescript");

const commonTags = await redis.sinter("tags:post1", "tags:post2", "tags:post3");
console.log(commonTags); // ["typescript", "react"]

Find common friends

await redis.sadd("friends:alice", "bob", "charlie", "david");
await redis.sadd("friends:bob", "alice", "charlie", "eve");

const mutualFriends = await redis.sinter("friends:alice", "friends:bob");
console.log(mutualFriends); // ["charlie"]

Empty intersection

await redis.sadd("set1", "a", "b", "c");
await redis.sadd("set2", "d", "e", "f");

const result = await redis.sinter("set1", "set2");
console.log(result); // []