modules/kraken/features/resources/cache-server.custom_region.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE cache PUBLIC
  "-//GemStone Systems, Inc.//GemFire Declarative Caching 6.5//EN"
  "http://www.gemstone.com/dtd/cache6_6.dtd">
  
<cache>

  <!-- This is the definition of the default session region -->
  <region name="{{region_name}}">
    <region-attributes enable-gateway="false" data-policy="partition">
    <!--
    <region-attributes enable-gateway="false" data-policy="partition" statistics-enabled="true">
        <entry-idle-time>
          <expiration-attributes timeout="0" action="invalidate">
            <custom-expiry>
              <class-name>com.gemstone.gemfire.modules.util.SessionCustomExpiry</class-name>
            </custom-expiry>
          </expiration-attributes>
        </entry-idle-time>
    -->
      <partition-attributes redundant-copies="1" total-num-buckets="113"/>
    </region-attributes>
  </region>

  <initializer><class-name>com.vmware.gemfire.rest.JsonFunction</class-name></initializer>
</cache>