Client.getSet(key, value)

Atomically sets key to value and returns the value previously stored at key.

Parameters

Parameter	Type	Description
`key`	string	the key to get and set
`value`	string, number, or boolean	the value to set

Returns

Type	Resolves with	Rejected when
`Promise<string>`	On success, the promise resolves with the old value stored at `key`.	If `key` does not exist, or does not hold a string value, the promise is rejected with an error.

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.set('mykey', 'oldvalue', 0);
  await redisClient.getSet('mykey', 'newvalue');
  await redisClient.getDel('mykey');
}