Cache types clarification

[Tarko Tikan]

hey,

While optimizing the memory usage for some new instances, we quickly saw 
"Use roughly twice as much rrset cache memory as you use msg cache 
memory" recommendation is not true any more.

We actually see rrset cache being 2/3 of size of msg cache (before they 
hit cache limits).

I tried to find documentation about what is actually stored in those 
caches and thought (before I go hunting for it in source) I might as 
well ask in here.

-- 
tarko