If you set the cacheSwitchHot property of the Repository component to true, when the Repository receives a SwitchingDataSourceEvent of type PREPARE from the SwitchingDataSource, it prepopulates an on-deck set of caches with data from the next DataSource. Then, when the switch occurs and Repository receives a SwitchingDataSourceEvent of type SWITCH from the SwitchingDataSource, the caches are not flushed; instead, the on-deck caches go live. This can improve performance during and immediately after a database switchover.
