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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';

// Instantiate a new redis client
const redisClient = new redis.Client('redis://localhost:6379');

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');
  }
}