Use the multi-site configuration to scale horizontally between disparate, loosely-coupled clusters.

The VMware GemFire multi-site implementation connects disparate clusters. The systems act as a single system when they are coupled, and they act as independent systems when communication between sites fails. The coupling is tolerant of weak or slow links between cluster sites. A wide-area network (WAN) is the main use case for the multi-site topology.

For an overview, see How Multi-site (WAN) Systems Work.

For more detailed information, see the following topics:

  • Multi-site (WAN) Topologies

    This topic explains the recommended VMware GemFire multi-site topologies and the topologies to avoid.

  • Configuring a Multi-site (WAN) System

    Plan and configure your multi-site topology, and configure the regions that will be shared between systems.

  • Filtering Events for Multi-Site (WAN) Distribution

    Optionally, you can create gateway sender and gateway receiver filters to control which events are queued and distributed to a remote site, or to modify the data stream that is transmitted between GemFire sites.

  • Resolving Conflicting Events

    Optionally, you can create a GatewayConflictResolver cache plug-in to decide whether a potentially conflicting event that was delivered from another site should be applied to the local cache.

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