Process Flow

Message processing occurs in three phases: build, transfer, and load.

For all feed handlers and all configurations, RAP data processing takes place in three main phases.
  1. Build messages. In a custom feed handler, developers use the Publisher API to build messages from incoming data feeds. Likewise, the demo feed handler and FAST feed handler use the Publisher API to build messages.
  2. Transfer messages. During this phase, messages are transferred from a publisher to a subscriber.
  3. Loading messages. Subscribers load messages into the RAPCache and RAPStore databases.
Parent topic: Platform Architecture