Overflow Configuration Examples

This topic provides example of configurations for data overflow in VMware Tanzu GemFire.

The cache.xml examples show configuration of region and server subscription queue overflows.

Configure overflow criteria based on one of these factors:

• Entry count
• Absolute memory consumption
• Memory consumption as a percentage of the application heap (not available for server subscription queues)

Configuration of region overflow:

<!-- Overflow when the region goes over 10000 entries -->
<region-attributes>
  <eviction-attributes>
    <lru-entry-count maximum="10000" action="overflow-to-disk"/>
  </eviction-attributes>
</region-attributes>

Configuration of server’s client subscription queue overflow:

<!-- Overflow the server's subscription queues when the queues reach 1 Mb of memory -->
<cache> 
  <cache-server> 
    <client-subscription eviction-policy="mem" capacity="1"/> 
  </cache-server> 
</cache>