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Client.sadd(key, members)

Adds the specified members to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.


keystringkey holding the set to add the members to.
membersany[]members to add to the set.


TypeResolves withRejected when
Promise<number>On success, the promise resolves with the number of elements that were added to the set, not including elements already present in the set.


import redis from 'k6/experimental/redis';
// Get the redis instance(s) address and password from the environment
const redis_addrs = __ENV.REDIS_ADDRS || '';
const redis_password = __ENV.REDIS_PASSWORD || '';
// Instantiate a new redis client
const redisClient = new redis.Client({
addrs: redis_addrs.split(',') || new Array('localhost:6379'), // in the form of 'host:port', separated by commas
password: redis_password,
export default function () {
.sadd('myset', 'foo')
.then((_) => redisClient.sadd('myset', 'bar'))
.then((_) => redisClient.sismember('myset', 'foo'))
.then((isit) => {
if (isit === false) {
throw new Error('sismember should have returned true');