Hey everyone! I'm jinyuan, an indie developer. I recently launched DevTools Box — a free online toolbox with 75+ developer tools.
DevTools Box includes tools like:
Java 21 introduced virtual threads as a stable feature (JEP 444), fundamentally changing how we approach concurrency on the JVM. In this post, we'll explore what virtual threads are, why they matter, and how to use them effectively.
This article is an English translation of the original Japanese article.
After introducing i18next to a React Native app, dates like 7月24日(金) remained in Japanese on the screen. Just adding more translation JSON does not change places where Date is directly formatted.
To avoid having text and dates in different languages, I unified the lang...
A crooked phone photo goes in, a clean straight card image comes out - no GPU, and nothing running when nobody uploads. It runs on the biggest lambda AWS sells, and the biggest is not the same as enough.
This is the 3rd article in the series about the image processing pipeline.
If you've built any kind of automated system that pays out users—whether it's an AI agent marketplace, a freelance platform, or a bot network—you've hit the "how do I pay them?" wall. Traditional bank transfers are slow, fees eat margins, and your users are scattered across the globe.
Enter USDT on multipl...
JWTs are everywhere, but they're often misunderstood. Let's strip away the jargon and see what they actually are, how they work, and how to use them safely in your apps.
A JWT (JSON Web Token) is just a string with three parts separated by dots: