Models of Distributed Real-Time Computing

Abstract

In this chapter, we aim at providing a global view of what is timely behavior of a distributed system architecture. The chapter starts by introducing classes of real-time systems with different timeliness guarantees, setting the stage for introducing the several frameworks for structuring real-time systems. Then, it discusses strategies for the several approaches to building an architecture, where the paradigms presented in the last chapter show their usefulness. The main models of real-time systems are then presented. From the viewpoint of timing: partial synchronism; time-triggered; and event-triggered models. From a functional viewpoint: real-time communication; real-time control; real-time and active databases; and quality-of-service.