Client.persist(key)

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
    .set('mykey', 'myvalue', 10)
    .then((_) => redisClient.expire('mykey', 100))
    .then((_) => redisClient.ttl('mykey'))
    .then((ttl) => {
      if (ttl <= 10) {
        throw new Error('mykey should have a ttl of 10 <= x < 100');
      }

      return redisClient.persist('mykey', 100);
    });
}