How to update or extend the expiration time of a key in Deno KV?

[Akimotorakiyu]

Description

In Deno KV, when using the set method, we can set an expiration time for a key via the expireIn option. However, I'm not sure how to update or extend the expiration time of an existing key.

For example, I have the following code to set a key with an expiration time:

import { openKv } from "deno/kv";

async function main() {
  const kv = await openKv();
  // Set a key with an expiration time of 60 seconds
  await kv.set(["myKey"], "myValue", { expireIn: 60000 }); 
}

After some time, I want to extend the expiration time of myKey by another 60 seconds. But I didn't find a direct method to achieve this in the API documentation.

Questions

Is there a built - in method to update or extend the expiration time of an existing key in Deno KV?
If there is no built - in method, what is the recommended workaround to achieve this functionality?

[lucacasonato]

You can just set the same key again, with a new expireIn.

[Akimotorakiyu]

@lucacasonato Setting the same key with the same old value seems a bit odd. Please have a look something like below:

abstract class ICache{
  // ...
  expire(expireIn: number):boolean{
    throw new Error('Method not implemented.')
  }
}

class DenoKVCache extends ICache{
  override expire(expireIn: number):boolean{
    // can't get the old value
    return false
  }
}
class RedisCache extends ICache{
  override expire(expireIn: number):boolean{
    // it's ok without oldvalue
    return true
  }
}