What amount of views is considered too much for Couchbase Lite?

According to the documentation on Couchbase Lite views:

“Views are persistent, and need to be updated (incrementally) whenever documents change, so having large numbers of them can be expensive. Instead, it’s better to have a smaller number of views that can be queried in interesting ways.”

With that being said, how will I know if I am making too many views? I have no idea where I can get any metrics on this or what is considered good practice.

A good rule of thumb would be:
5000 docs and 1 view is good.
1 doc and 5000 views would be bad.

Somewhere between the two example you would have dimensioning returns.
I think you should measure it by performance based on your application needs.