All posts by Grzegorz Ziemoński

Onion Architecture is Interesting

After Layered and Hexagonal architectures, the time has come to talk about their close cousin – the Onion Architecture initially introduced in a series of posts by Jeffrey Palermo. What is Onion

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How to Be a Better Code Reviewee

In the only guest post ever on Tidy Java, Agnieszka gave you the essentials necessary to take advantage of code reviews in your projects. I hope that by now all of you are doing some sort of code reviews.

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Bind Your Contexts, Don’t Hurt Them!

This article is a response to a comment under one of my previous ones – Layered Architecture Is Good. The comment says: Domain driven design does not conflict with layered architecture! The first

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Hexagonal Architecture is Powerful

Continuing our journey through various architectural styles, we’re now headed for the Hexagonal Architecture, also known as Ports and Adapters. What is Hexagonal Architecture? Hexagonal Architecture

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Layered Architecture Is Good

Darek, the guy who reviews almost all Tidy Java posts before they are published, suggested that I could do a series on implementing different architectural styles, their pros, cons etc. I decided to give

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Cleaner Tests with Spock

One obvious fact about tests that is often overlooked is: tests are code. This implies that the tests, as any kind of code, have to be read, understood and maintained. We’re smart, educated guys,

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TDD and Code Quality

Every time I see an article claiming that TDD improves code quality, a part of me cries. It’s not that I don’t think it can be true. It’s because it’s not necessarily true and those

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Keep Your Code Consistent

There’s a bunch of things in programming that have seemingly little to no meaning. Some of those things, despite their “seemingly” little meaning cause a lot of pointless discussions

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Rethinking Outputs of Software Architecture

Increasing popularity of Agile Software Development has made architecture and upfront design much less relevant, in some systems even nonexistent. However, the developers still complain about the architecture

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10 Tips To Handle Null Effectively

When I started programming in Java, I considered the null value my enemy and I dreaded NullPointerExceptions that happened fairly often to me. Over time I learned working with it and nowadays I can consider

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