JWT is suitable for stateless scenarios and APIs, while server-side tokens work best for session-based authentication in web applications.

In-app alerts provide your application users with real-time information; Firebase Cloud Messaging is a cross-platform messaging system that is a great tool for sending push notifications to your client app.

The five SOLID principles of object-oriented class design facilitate the development of understandable, tested software that many developers can use at any time and place.