Way to get expired elements. about ttlcache

[davseby]

You can use OnEviction method. DeleteExpired is the only method that uses the EvictionReasonExpired reason, which can be used to identify deleted items.

Something like this:

// c is a Cache instance.
cleanup := c.OnEviction(func(ctx context.Context, er ttlcache.EvictionReason, i *ttlcache.Item[string, string]) {
    if er != ttlcache.EvictionReasonExpired {
        return
    }
  
    // do something with the expired item.
})

// once we no longer need to track the evicted items, we can remove the callback function.
defer cleanup()
  
c.DeleteExpired()

[davseby]

There is a way to do it.