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⚠️ This is the archived documentation for k6 v0.46. Go to the latest version.

Client.lset(key, index, element)

Sets the list element at index to element.


keystringkey holding the list to set the element of.
indexnumberindex of the element to set.
elementstringvalue to set the element to.


TypeResolves withRejected when
Promise<string>On success, the promise resolves with OK.If the list does not exist, or the index is out of bounds, 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 async function () {
await redisClient.rpush('mylist', 'first');
await redisClient.rpush('mylist', 'second');
await redisClient.rpush('mylist', 'third');
await redisClient.lset('mylist', 0, 1);
await redisClient.lset('mylist', 1, 2);