Hi Rick, It seems that you need to increase clients number to achieve better performance when you increase server nodes number. You can try to put data from different threads as well.
Also, you can set CacheConfiguration.setWriteSynchronizationMode(CacheWriteSynchronizationMode.PRIMARY_SYNC). The default value is FULL_SYNC which means that client node will wait for write or commit to complete on all participating remote nodes (primary and backup) . Performance Tips can be found here . Best Regards, Roman  https://apacheignite.readme.io/v1.1/docs/primary-and-backup-copies#section-synchronous-and-asynchronous-backups  https://apacheignite.readme.io/docs/performance-tips -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/