Re: Prevayler vs Terracotta
William Pietri <[email protected]>
| Newsgroups | gmane.comp.java.prevayler |
|---|---|
| Message-ID | <[email protected]> |
Ralph Johnson wrote: >> Prevayler does require you to hold all your objects in the JVM heap in >> RAM. If you cannot do that, as you know, you cannot use Prevayler. >> > > Do any of you have experience with 64 bit machines? What is the > biggest Prevayler database you've seen? > A client, who does not use Prevayler but is using the hot-in-RAM approach, has been using 64-bit machines with large JVMs quite happily. I think their production machine had 16 GB of RAM, with talk of expansion. The problem with this approach, though, turns out to be read IO bandwidth and object deserialization. Their startup times are on the order of 30 minutes. If anybody has interesting solutions (hardware or software) to the long startup time problem, I'd love to hear about them, as I think that's Prevayler's Achilles' Heel for scaling. William ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ To unsubscribe go to the end of this page: http://lists.sourceforge.net/lists/listinfo/prevayler-discussion _______________________________________________ "Databases in Memoriam" -- http://www.prevayler.org