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Client.getSet(key, value)

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

Parameters

ParameterTypeDescription
keystringthe key to get and set
valuestring, number, or booleanthe value to set

Returns

TypeResolves withRejected 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

JavaScript 
import redis from 'k6/x/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');
}