Chapter 9. Mechanistic Design

This chapter explains the middle level of design, called mechanistic design. Mechanistic design deals with how collaborations (relatively small sets of classes and objects that collaborate to achieve common goals) can be optimized. Mechanistic design is primarily organized around the discovery and use of patterns of object collaboration and its scope tends to be an order of magnitude smaller than that of architectural design. The mechanistic design patterns are reified solutions to structurally similar problems. This chapter will identify several smaller-scale patterns useful in real-time embedded systems.

Notation and Concepts Discussed
Design Patterns	Smart Pointer Pattern	Rendezvous Pattern
Observer Pattern	Proxy Pattern	Container Pattern
Reliable Transaction Pattern	Guarded Call Pattern	Policy Pattern