I think it's OK to restrict to the last 24 hours for now.  What I was commenting on was *how* we're getting the most recent events.  Rather than querying Redis for those, we're iterating over **every single event** and appending to the array if the event's timestamp is `> since`. I think we should add a method that queries redis for this, since redis can do this super fast, faster than iterating over dozens, or hundreds, or thousands of events, I figure?  so something like this instead:

```
recent_events = current_user.events.since(since)
```