The RAPCache Subscriber receives messages from publishers and then loads them into the RAPCache database.
RAPCache Subscriber queues up messages that are consumed by a data stream handler, which routes the messages to their final destination.
Subscribers receive message packets from publishers on multiple data streams. When a packet arrives, the subscriber records that the packet arrived. This record is used to identify any missing packets. If a packet is missing, the subscriber requests a resend from the publisher for that specific packet.