The role of the RAPCache Subscriber in high availability is to ensure that no data is lost in the Sybase RAP system. On the Subscriber side, the primary channels used by the Publisher can be configured for one or more Subscribers, and a second set of Subscribers can be configured to receive the same data over the secondary channels. In this way, two identical streams of data are being published from the feed handlers into the Sybase RAP system via redundant subscribers.
