On 26/07/2017 19:20, christop...@baus.net wrote: > Hi, > > I'm running on the following platform: Tomcat 8.5.12 Java 1.8.0_121 Windows > 2012R2 > I'm working on a multi-node configuration. I have some questions about how > the DeltaManager works. Does using the DeltaManager require sticky sessions > using jvmRoute?
You can configure it so it works without but there is a performance cost of doing so. There is also a risk of breakage even if properly configured. > Or does the DeltaManager replicate to all nodes? It does, but the issue is one of timing. The main problematic area is the user agent being directed to another node before the session data has replicated. This can be avoided by configuring sync replication (which slows things down since the response does not complete until the replication has completed). > It isn't clear to me why jvmRoute is required if DeltaManager replicates to > all nodes. You can do async replication which is faster without risk of breakage unless the node f ails when there might be some state loss. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
