This is documentation for the next version of K6. For the latest stable release, go to the latest version.
Client.exists(keys)
Returns the number of key
arguments that exist. Note that if the same existing key is mentioned in the argument multiple times, it will be counted multiple times.
Parameters
Parameter | Type | Description |
---|---|---|
keys | string[] | the keys to check the existence of. |
Returns
Type | Resolves with | Rejected when |
---|---|---|
Promise<number> | On success, the promise resolves with the number of keys that exist from those specified as arguments. |
Example
import redis from 'k6/experimental/redis';
// Instantiate a new redis client
const redisClient = new redis.Client('redis://localhost:6379');
export default async function () {
let exists = await redisClient.exists('mykey');
if (exists === true) {
throw new Error('mykey should not exist');
}
await redisClient.set('mykey', 'myvalue', 0);
exists = await redisClient.exists('mykey');
if (exists === false) {
throw new Error('mykey should exist');
}
await redisClient.del('mykey');
}