madhead articles - 21 total
When ConcurrentHashMap is not concurrent and runBlocking is not blocking
A (click)bait? Let me explain. Take a look at this simple code. Can you predict what will be...
No SNAPSHOTs
SNAPSHOTs are a confusing Maven concept. Maven is a pre-historic build tool, invented inside The...
SSTables and LSM-Trees for a layperson
This article is my excerpt of Martin Kleppmann's "Designing Data-Intensive Applications" book. These...
On DynamoDB’s Single Table Design
What’s a Single Table Design? The world learned about the idea of Single Table Design...
Declarative Gradle is a cool thing I am afraid of: Maven strikes back
Yesterday, JetBrains introduced Amper. Today, Gradle published another related article, named...
PR preview environments with Neon, GitHub Actions, and AWS Lambda
You might have heard about preview environments (AKA dynamic, or ephemeral environments) in the scope...
From BotFather to 'Hello World'
Great news, everybody: a few days ago, Telegram team updated their Bot API documentation! Among other...
Answer: What is the differences between the term SSTable and LSM Tree
answer re: What is the differences between...
Docker-based GitHub Actions in orphan branches
GitHub Actions are great for sharing & reusing logic across your CI/CD pipelines. However,...
Two design patterns for Telegram Bots
I've just launched my next Telegram Bot: Tyzenhaus. It is a shared expenses tracking bot. Whether you...
Reading Java properties in GitHub Actions
I just want to share another GitHub Action (create by me) that you may find useful in your Java proje...
One-stop shop for working with semantic versions in your GitHub Actions workflows
GitHub Actions are so cool! Check out our recording about them @ Ministry of Testing Abu Dhabi if yo...
ImgMacroBot — Telegram inline bot to generate image macros on the fly.
Sometimes I want to reply with a meme image in a Telegram conversation. You know, when a colleague as...
How I blundered with enum's hashCode
I was implementing an HTTP caching for one of our APIs, based on "ETag" and "If-None-Match" headers....
How I blundered with a private key and newlines
A short story about wasting a day on a single newline at the end of a private key. I was trying to s...
No-bullshit guide on publishing your Gradle projects to Maven Central
You’ve heard the news, haven’t you? JFrog is closing JCenter — probably the best Maven-compatible...
Redis module in Kotlin/Native
Those of you who have some experience with Redis may know that it is not just a simple cache or a pla...
Best way to earn reputation on Stack Overflow in 202X
I'm working my ass off to get 25K reputation on Stack Overflow: I want to check out the "access to...
JUnit 5 extensions for AWS
Do you test the code that uses AWS services? Do you use JUnit 5 in your tests? If you do both, I may...
Kafka Connect + Wikipedia
I've been developing backend software for almost 10 years already and never had a chance to work clos...
Do you need a local main branch?
I noticed recently that I’ve (almost) never used a local main / master branch in Git. I only use it...