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From Apache Wiki <wikidi...@apache.org>
Subject [Db-derby Wiki] Update of "InMemoryBackEndPrimer" by KristianWaagan
Date Mon, 23 Mar 2009 11:22:27 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Db-derby Wiki" for change notification.

The following page has been changed by KristianWaagan:

  Sizing the Derby page cache still impacts the performance when using the in-memory storage
back end. The default value of ''1000'' pages should give acceptable performance for most
basic applications, but it is not recommended that a smaller number of pages is specified.
The data has to pass through the page cache even though the user data is already stored in
main memory. A larger page cache may increase the performance at the cost of increased memory
+ [[BR]]
+ To stop Derby from writing anything to ''derby.log'', see one of the ''derby.stream.error''
properties (for instance [http://db.apache.org/derby/docs/dev/ref/ref-single.html#rrefproper33027
  == Known limitations and bugs ==
  Know problems and issues will be listed in the table below.

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