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From Daniel John Debrunner <...@debrunners.com>
Subject Re: Faster Derby with relaxed durability - WAS Re: Is HSQLDB compatible with ASF license?
Date Mon, 14 Feb 2005 19:09:27 GMT
Brian McCallister wrote:

> How hard would it be to abstract the filesystem access completely and go
> directly against in-memory implementations, rather than "getting sloppy"
> with disk i/o?

A file system abstraction is already there, package org.apache.derby.io,
just waiting for an in-memory implementation. As Dain pointed out the
issues with a memory based database is the ability to do post test
analysis on the data. Though one could normally run the test with
in-memory and switch to disk for analysis of failures.

> 6 seconds per test is still pretty expensive time wise.

Well, that depends on what is happening in the test :-), Derby tests
tend not to be a single test case, but a number of test cases.


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