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⚠️ This is archived documentation for v0.41. Go to the latest version

Client.getSet(key, value)

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

Parameters

ParameterTypeDescription
keystringthe key to get and set
valueanythe 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

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', 'oldvalue', 0)
    .then((_) => redisClient.getSet('mykey', 'newvalue'))
    .then((_) => redisClient.getDel('mykey'));
}