Design Pattern: Observer Pattern in Java

The Observer Pattern is a behavioral design pattern in software engineering. It defines a one-to-many relationship between objects: when the state of one object (the subject) changes, all its dependents (the observers) are automatically notified. This pattern enables components to…

User Experience: Optimistic UI Updates

When users interact with software, they expect instant feedback. In older software, this was rarely a problem, even on much slower hardware, because the UI didn’t wait for network responses. In many modern SaaS applications, however, the UI waits for…