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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
JavaScript
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');
}
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