TheHistoryParameters..::..MaintainHistoryStore Property
If false, history entries will be recorded internally and can only be retrieved via calls to GetThingHistory: this option is used primarily in conjunction with ClearHistory/RestartUpdateHistory for processing or transmitting streams of property changes with at least once delivery guarantees.
If true, history entries will be recorded into a storage mirror that can be consumed directly by plug-ins. Calls to GetThingHistory will return null.
Namespace:
nsCDEngine.Engines.ThingServiceAssembly: C-DEngine (in C-DEngine.dll)