Need help!!!

[Raymond Raymond <ra...@hotmail.com>]

Who can tell me how I can find some documentations about
the cache and buffer management of Derby?

Thanks!


Raymond

_________________________________________________________________
Scan and help eliminate destructive viruses from your inbound and outbound 
e-mail and attachments. 
http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines 
  Start enjoying all the benefits of MSNŽ Premium right now and get the 
first two months FREE*.

Re: Need help!!!

["Jean T. Anderson" <jt...@bristowhill.com>]

Raymond Raymond wrote:
> Who can tell me how I can find some documentations about
> the cache and buffer management of Derby?

The Tuning guide has some info about the page cache here (as well as 
pointers to additional information):
http://db.apache.org/derby/docs/10.1/tuning/ctunperf54492.html

If what you're looking for is internal information, the 
http://db.apache.org/derby/papers/derby_arch.html page provides a terse 
description of cache management in the "Services" section:

> The services/cache component is a general purpose caching mechanism that simply caches objects that implement the Cacheable interface. It is used by the store for buffer caching, but it is also used to cache compiled plans for SQL statements, open containers and their file descriptors, string conversions, table descriptors and maybe more.

Topics are also sprinkled throughout the derby-dev posts. The apache 
archives are at http://mail-archives.apache.org/mod_mbox/db-derby-dev/ ; 
however, they aren't searchable yet, so I often search the list at 
http://news.gmane.org/gmane.comp.apache.db.derby.devel .

I hope this helps for getting started. Please feel free to post any 
questions.

  -jean

ps. I dropped derby-commits from the reply -- it's just for subversion 
commit notifications.