---
title: "Client.persist(key) | Grafana k6 documentation"
description: "Remove the expiration from a key."
---

# Client.persist(key)

Removes the existing timeout on `key`.

### Parameters

Expand table

| Parameter | Type   | Description                       |
|-----------|--------|-----------------------------------|
| `key`     | string | the key to remove the timeout of. |

### Returns

Expand table

| Type               | Resolves with                                                                               | Rejected when |
|--------------------|---------------------------------------------------------------------------------------------|---------------|
| `Promise<boolean>` | On success, the promise resolves with `true` if the timeout was removed, `false` otherwise. |               |

### Example

JavaScript ![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```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', 'myvalue', 10);
  await redisClient.expire('mykey', 100);

  const ttl = await redisClient.ttl('mykey');
  if (ttl <= 10) {
    throw new Error('mykey should have a ttl of 10 <= x < 100');
  }

  await redisClient.persist('mykey', 100);
}
```