A design pattern is a generalized approach or solution to a commonly occurring problem. Design patterns are a way of capturing and codifying design expertise in the forms of solutions that have proven effective in solving specific kinds of problems in a various contexts. This chapter discusses how fine-grained patterns that solve specific kinds of problems common in realtime systems. These and other related patterns can be found in the references. Much of this material is adapted from the author’s book Real-Time Design Patterns: Robust Architecture for Real- Time Systems (Addision-Wesley, 2002).