Client-lset.md

title	excerpt
Client.lset(key, index, element)	Sets the list element at index `index` of the list stored at `key` to `value`.

Sets the list element at index to element.

Parameters

Parameter	Type	Description
key	string	key holding the list to set the element of.
index	number	index of the element to set.
element	string	value to set the element to.

Returns

Type	Resolves with	Rejected 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.

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 function () {
  redisClient
    .rpush('mylist', 'first')
    .then((_) => redisClient.rpush('mylist', 'second'))
    .then((_) => redisClient.rpush('mylist', 'third'))
    .then((_) => redisClient.lset('mylist', 0, 1))
    .then((_) => redisClient.lset('mylist', 1, 2));
}