[gentle] Cache Questions

[Adam B. <ag...@gm...>]

As I said, my application is swamped by the
CacheManager.ClearQueryResultsByType method, so I'm digging through the
cache code trying to get my head around it.

What I don't understand is why ObjectFactory.GetCollection() adds items to
the cache using ObjectMap.GetInstanceHashKey(object) as the key which is in
the form of "Type|PK=X" while ObjectFactory.GetInstance() uses the
SQLStatement.CacheKey which is in the form "Type|Query|Parameters".

I ask because CacheManager.ClearQueryResultsByType will only remove entries
of the second form and my log shows that I'm only getting cache hits for
keys of the first form.  So its seems like a naive way to get around this
bottleneck would be to not have GetInstance() add to the cache and not have
CacheManager.ClearQueryResultsByType run as there would nothing for it to
clear out.

Adam