Ioredis: mset with expire/TTL

[gielow]

Hi,

I'm aware that I can set a key with expiration by:
redis.set('key', 100, 'ex', 10)

I would like to leverage the operation mget with an expiration time.
Is there a way to do it?
Is there something similar to:

redis.mset(keys, 'ex', 10) ?

[Uzlopak]

No, as the operation mset does not Accept any expiration Parameter you have to do in two steps.

[gielow]

To whoever needs to set multiple keys with expiration date and avoid multiple trips to redis here is an example:

  const keys = ['a', 'b', 'c', 'd'];
  const oneDayInSeconds = 24 * 3600;
  const setCommands = keys.map((k) => {
    return ['set', `prefix_${k}`, 1, 'ex', oneDayInSeconds];
  });

  await this.cache
    .multi(setCommands)
    .exec(function() {
      // callback
    });

Ps.: You might need to tweak if you want to set a different value than 1 to the keys.