Java performs well as long as you're CPU bound. But memory is becoming cheap enough to keep substantial parts of a database in memory. Avoiding all that IO tran

Java performs well as long as you're CPU bound. But memory is becoming cheap enough to keep substantial parts of a database in memory. Avoiding all that IO translates into enormous performance gains. Unfortunately, in Java (using the Oracle VM) you can't keep a lot of data in memory without getting killed by garbage collector pauses.