Spring Boot Custom Components

Let's build domain-oriented custom components with Spring Boot starters, auto-configuration and configuration properties. Updated to Spring Boot 2.7.0!

OOP Is Not For Everyone

Object-oriented programming has been around for decades and has done a great deal for software development. So why do people keep complaining about it?

OOP Is Still Cool in 2022

Object-oriented programming might not be perfect but it is still the best we have.

Keep Options Open

Keeping options open is one of the most useful principles of Clean Architecture. Let’s dive deeper with code examples in Java and Spring framework.

How Cohesion and Coupling Correlate

Cohesion done right reduces the coupling and complexity of systems.

Monolithic Objects

Don't model the real world, model your business!

You Aren’t Gonna Need Microservices

Do you really need a cluster of pods, service mesh, and stream-processing platform right now?

Good and Bad Monolith

It is unfortunate that monolith has become a dirty word. In fact, a physical monolith is typically the right thing to do. Pure evil is monolithic thinking.

No Internals in Configuration API

Configuration is part of the application API, so the same rules apply to it: no leak of implementation detail.

Colored Services

Defining service boundaries is hard. Let's bring some colors and make it fun!