bcec11ad_http___activemq_org_config_1_0__Description
[Element] fixedSizedSubscriptionRecoveryPolicy [Class] org.apache.activemq.broker.region.policy.FixedSizedSubscriptionRecoveryPolicy [Description] 
This implementation of {@link SubscriptionRecoveryPolicy} will keep a fixed amount of memory available in RAM for message history which is evicted in time order.
Schema for namespace: http://activemq.org/config/1.0
Description