The Observer pattern (also known as publish/subscribe) provides a simple mechanism for one object to inform a set of interested third-party objects when its state changes.

Decisions made during the development process can significantly affect how the production environment is architected. In this episode, we look at a few different scenarios and how the early decisions made in development affected the production infrastructure.

Sometimes an old techniques with a modern twist can not only solve the problems at hand, but can also simplify the application's architecture.

In this episode, we look at various questions asked during interviews.

Rack provides a minimal, modular, and adaptable interface for developing web applications in Ruby. In this episode, we create and insert our own Rack Middleware into a Rails 6 application.