Qs after reviewing Java dynamic metadata resolvers

[Cantor, Scott]

> Well, the HttpClient cache is less important now for the batch resolver also I
> think.  We recently changed to now init from the backing file.  Any/all HTTP
> fetches are now going to be in the background, both at startup and runtime
> refresh.

We really need to get this all documented. I have the notes on it, but I couldn't find a sane place to document this stuff.

-- Scott