last changes feature in field hub: slider lags

[lsteinmann]

I think the slider for setting the amount of last changes could use a delay in evaluation (if that is the problem here): it gets slow-ish and lags a bit, when you slide it from 10 to 100. I assume it starts evaluating immediately when the value changes (but I did not check, so correct me if that's wrong) - is there a way to add a debounce in elixir? Maybe delaying evaluation for 3 secs would do the trick.

[dersmon]

Currently the server makes a complete roundtrip to the database to evaluate the n changes. Makes probably more sense to load the maximum once at the beginning and use the selected n to trim down that list.

[lsteinmann]

Which has the (honestly tiny) downside of not updating the changes without reloading the page. So probably Simons idea is the most efficient solution.

[dersmon]

The view is actually polling regularly anyway.

I think there is even a continuous update stream in CouchDB, but that would require some additional rewrites in the CouchService module.

[lsteinmann]

Continuous would obviously be cool, but for now you first solution seems more appropriate (and faster to do, anyway). What do you guys think?