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With a long history, Java has seen various programming styles. As Java evolves, the way we write our software evolves too. In particular, Project Amber has introduced a few new language features that simplify how we design applications. The Data-Oriented Programming (DOP) paradigm plays a significant role in this transformation. Languages Features In short, Project Amber development efforts consist of three main language features: Java Records Sealed Classes Pattern Matching This allows us to write the following code example: ...

Monitoring is a crucial aspect of modern software development. It’s essential to have visibility into your system state at any given moment. The choice of what to monitor is flexible and really depends on your team, as monitoring tools can accommodate custom metrics. Common metrics to consider include memory usage, I/O, error rates, and more. In this article, I will guide you through setting up an open-source monitoring stack using Prometheus and Grafana for your Java Spring Boot application. ...

Modern software development requires automated code checks to ensure that common code style standards are met. This is usually done by linters, which are available for many programming languages and usually built in a CI pipeline. What is a linter? A linter is a tool that analyzes your source code for potential errors, stylistic inconsistencies, and other issues that can affect code quality and maintainability. The name “linter” comes from the Unix utility lint, which was first released in the 1970s. ...

https://digestwave.com More than a year has passed since my Digestwave announcement post. And today, I am happy to report that the initial version is ready to be used. Digestwave is a news aggregator which provides a clean web interface for reading news from many sites without ads and in a unified UI. Content available Digestwave has two so-called “editions”: international and Ukrainian. This was done intentionally to be able to filter out Ukrainian websites for people who don’t understand them or don’t interested. The international edition contains content in English that is not location-specific. You can change edition in the top right corner. ...

There is a feature in git which allows signing commits by GPG key. However, not all developers heard about it. In this post, we will see how to enable it. Why do you need it? The only purpose of signing your commit is for others to be sure that this commit was really made by you and not by someone pretending to be you (anyone can set a completely random name and email by git config user.name 'Linus Torvalds' and git config user.email '[email protected]'). ...

After four months of serving in the Ukrainian Army Forces, I am returning back to a developer’s life. I did my best there, and now I am able to focus on software development. Hopefully, I will be posting articles more often now. However, the war is still going on. We should not forget about it and keep helping Ukraine to win. Please donate to our trusted funds like Come Back Alive, Charity foundation of Serhiy Prytula or United 24. ...

I haven’t done any updates regarding myself for a while. As you know, there’s a war in Ukraine. Due to martial law, I was mobilized into the Armed Forces of Ukraine. And I am already serving my country for more than a month. The thing is that even if you don’t have any military experience, you don’t have any other choice in the current situation. The alternative would be a jail in case you refuse. ...

At the end of 2021, JetBrains announced the new application into their IDE line-up: Fleet. However, this is not really an IDE, but just an editor (with a hidden power). https://blog.jetbrains.com/blog/2021/11/29/welcome-to-fleet/ It is still in the preview stage, so it may change significantly by the time it will be publicly available. And I was lucky enough to get my preview version from JetBrains. What is Fleet Roughly speaking, Fleet is an attempt from JetBrains to take over VS Code (or Sublime Text) market. A very fast and lightweight editor. It is also built on a more-or-less native technology stack, compared to VS Code which runs on top of web technologies. The UI framework is a home-grown solution (Skija) which runs on top of a JVM. This allowed JetBrains to achieve extremely low typing lag. ...

Sometimes it can be hard to find a structured set of articles about important concepts and technologies in web development. And sometimes people just don’t know what to search for when they want to have a deeper understanding of the web in general. My teammate recently asked me for some good articles about web development and I struggled to provide an answer immediately. That is why I decided to compile a decent (but not exhaustive) list of important technologies (with corresponding articles) for understanding web development better. I am a back-end software engineer and I am not trying to cover all of the web in this article. However, I think that these concepts will make every developer way more familiar with the way web applications work. ...

Oracle has released the new long-term support (LTS) version 17 of Java in September 2021. I’ve been working with it for more than a month and I’m now ready to outline all the major changes compared to Java 11, its previous LTS release. I deliberately do not compare it to 16 because most Java users work on LTS versions. That’s why it makes sense to have a list of all new features that were introduced in 12, 13, 14, 15, 16, and 17 versions. I haven’t tried Java 17 in production yet, so this review is based only on my experience of using Java 17 in personal projects. ...