Practical articles, tutorials, and reflections from the Revquix community.
Here is a bug that turns up in a lot of Spring codebases. A method is annotated @Transactional. It saves an order, then charges a card. The charge fails. And the order is still in the database. Nobody removed the...
It is 11:59:58. A flash sale is about to open, and one lakh people have the same phone on screen, thumbs hovering over "Buy". The sale starts at 12:00:00, and there are exactly 500 units in stock. At 12:00:00 every one...
Every morning, our team lost close to a minute doing something that should take seconds: waiting for the Spring Boot application to boot up on local. Multiply that across restarts during debugging, CI pipeline runs, and...
Idempotency ensures that no matter how many times a request is made — the result stays the same... If the same ID comes again → it replies with the same result (not a new payment) India’s UPI processes billions of...
The most dangerous bugs aren't the ones that crash your application... they're the ones that silently return the wrong result. If you've been working with Java for a while, you've probably experienced something like...
I don't usually write about my own code. But last week I reread one specific piece of Revquix's backend - the real-time notification system - the way I'd review a stranger's pull request. No memory of writing it, no...
