sounds like your system needs a little rethinking, if you have singleton access to your DB. That is why the DBs are transactional, so that you can use connection pooling.
you can use JGroups, but you might run into serious performance problems, not because of JGroups, but because of the fact that you want to lock several tomcats in a distributed lock when accessing the DB. Filip ----- Original Message ----- From: "Igor" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, September 30, 2004 10:16 AM Subject: Re: Synchronization in cluster Hello! Thank you for answers! I will try to use JGroups We have data, that is often need to be read. And it is rarely written. It is implemented using Singleton pattern. Synchronization is used in several parts of web application. It is used mostly to access database Thank you, Igor ----- Original Message ----- From: "LERBSCHER Jean-Pierre" <[EMAIL PROTECTED]> To: "'Tomcat Users List'" <[EMAIL PROTECTED]> Sent: Thursday, September 30, 2004 10:41 AM Subject: RE : Synchronization in cluster Hi, What are your needs? Why distributed singleton or distributed locking are so important ? Perhaps you can use Database to implement locking functionality and Jgroups library to replicate state (or distributed singleton) across members of a group (see www.jgroups.org). --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
