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Removes and returns a random element from the set value stored at key.


keystringkey holding the set to get a random member of.


TypeResolves withRejected when
Promise<string>On success, the promise resolves to the returned set member.If the set does not exist, the promise is rejected with an error.


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.spop('myset', 'foo'))
.then((_) => redisClient.smembers('myset'))
.then((members) => {
if (members.length !== 1) {
throw new Error('sismember should have length 1');