When memory usage reaches 80% of the maximum specified in max-memory-size, Broker Server writes a warning in the journal log. If usage reaches 95% of the specified maximum, Broker Server issues an alert to the journal log. When memory usage returns to a level below 80%, Broker Server writes an informational message to denote that memory usage has dropped out of the danger zone.

To avoid cluttering the log with memory-related messages, the Broker Server does not issue these types of messages more than once an hour.