Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

Documentation

Client.sismember(key, member)

Open source

Client.sismember(key, member)

Returns if member is a member of the set stored at key.

Parameters

Parameter	Type	Description
`key`	string	key holding the set to check if the member is a member of.
`member`	string, number, or boolean	member to check if is a member of the set.

Returns

Type	Resolves with	Rejected when
`Promise<boolean>`	On success, the promise resolves with `true` if the element is a member of the set, `false` otherwise.

Example

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 async function () {
  await redisClient.sadd('myset', 'foo');
  await redisClient.sadd('myset', 'bar');

  const isit = await redisClient.sismember('myset', 'foo');
  if (isit === false) {
    throw new Error('sismember should have returned true');
  }
}