Design Patterns
In software engineering, a software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design.
Software Design Patterns
https://en.wikipedia.org/wiki/Software_design_pattern
Event Handling
Reactor
The Reactor pattern allows event-driven applications to demultiplex and dispatch synchronously and serially service requests that are received simultaneously from one or more clients.
Preactor
The Proactor pattern allows event-driven applications to demultiplex and dispatch service requests in an efficient asynchronous way.
Concurent Design Pattern
Refer Vol2
https://github.com/ppizarro/coursera/tree/master/POSA/Books/Pattern-Oriented%20Software%20Architecture
Active Object
Thread Pool
also called a replicated workers or worker-crew model
