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TIBCO Rendezvous® 8.7.0

# Rendezvous API Architecture

This section describes the architecture of the Rendezvous API. Architecture Summary outlines the core architectural elements of Rendezvous programming interfaces.

Architecture Summary

Element | Description
Message | Messages carry data among program processes or threads. Messages contain self-describing data fields. Programs can manipulate message fields, send messages, and receive messages.
Event | Programs create event objects to register interest in significant conditions. For example, dispatching a listener event notifies the program that a message has arrived; dispatching a timer event notifies the program that its interval has elapsed. Programs define event callback functions to process events.
Event Queue | Programs create event queues to organize events. A queue holds a sequence of event objects that are ready for dispatch.
Event Queue Group | Programs create event queue groups to prioritize event processing.
Event Dispatch | Programs dispatch events from queues or queue groups, processing each event with the corresponding callback function.
Transport | Programs use transport objects to send messages and listen for messages. A transport determines three aspects of message delivery:
| • | Delivery scope—the potential range of its messages
| • | Delivery mechanism—the path that its messages travel
| • | Delivery protocol—the ways in which programs cooperate and share information concerning message delivery
Transport objects of various types combine these aspects to yield different qualities of service—for example, intra-process delivery, network delivery, reliable delivery, certified delivery, distributed queue delivery.
Event Driver | Rendezvous software includes an event driver that places events in event queues. (Program code cannot access the event driver.)

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