Before preloading begins, you must ensure that enough cache agents have started to hold the objects from the backing store. The cluster does not start processing incoming data until the required objects have been loaded into the cache.
See Cluster Tab — Cache OM — Object Management Settings in
TIBCO BusinessEvents Administration, for details on specifying the minimum number of cache agents that must start before cache loading begins.
After the specified number of cache agents has started, the processing unit that acquires the lock first performs the cache loading. Any processing unit can acquire the lock. All agents wait until backing store data has finished loading before they start.