3.2. High Availability Using Server Hinting

In JBoss Data Grid, Server Hinting is a topology aware consistent hashing algorithm that ensures backup copies of data are not stored on the same physical server, rack or data center as the original. Server Hinting does not apply to total replication because total replication mandates complete replicas on every server, rack and data center.

Setting a machineId, rackId, or siteId in the transport configuration will trigger the use of TopologyAwareConsistentHashFactory, which is the equivalent of the DefaultConsistentHashFactory with Server Hinting enabled.

Server Hinting is particularly important when ensuring the high availability of your JBoss Data Grid implementation.