multiple readers and multiple writers

I forget if I've asked this before and I apologize if I did. Does 
metakit use a shared memory model of operation and support multiple 
readers and multiple writers?  My application is drowning in little dbm 
files and I'd like to unify things and take advantage of keeping data in 
memory whenever possible.  as I told a friend of mine:

each user has  a fast white list, a cache for green, yellow, red traps.

for site wide, I have a verify cache as well as reputation and rate of 
arrival.  rate of arrival and reputation will need to be accessible from 
multiple systems.

when processing messages and done, I open fast white list (user 
specific), verify cache, reputation, and and one of the green, yellow, 
red traps.  Right now with DBMS, most of the transactions are 
open/lock/rw/close.

I know I keep circling around the drain on this topic but I think that's 
because back of my brain is telling me that my current solution is 
wrong.  I'm just hoping when my friend pops over to talk about databases 
that I can stop circling.  :-)
---eric


-- 
Speech-recognition in use.  It makes mistakes, I correct some.
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