OneData uses Terracotta to maintain in-memory databases. An in-memory database is a cached version of a given data object. When you enable caching for a data object, OneData stores the records associated with the object in cache as well as in the release area. Caching improves the performance of REST services that use the data object, because the services interact with the cache instead of the database.

For information about enabling caching for a data object, see the section on in-memory databases in Developing for webMethods OneData. For information about configuring OneData to use a Terracotta Server Array, see Administering webMethods OneData. For more information about OneData system caches, see System Caches Used by the webMethods Product Suite