In this tutorial, you’ll build a production-ready PayPal payment service using NestJS microservices. Along the way, you’ll learn how to isolate payment logic into its own service, communicate between services using gRPC, publish payment events with RabbitMQ, and deploy everything with Docker. By the end, you’ll have a scalable payment architecture that can be reused […]
Daily Archives: July 18, 2026
Every application, at some point, has to deal with a fundamental challenge: something happens, and several other things need to react to it. A user logs in, and the app needs to save a token, cache the user profile, fire an analytics event, and navigate to the home screen. A payment is confirmed, and the […]
Have you been wanting to learn how to code but found it a bit too overwhelming or confusing? We just published a brand new course on the freeCodeCamp.org YouTube channel that is designed specifically for absolute beginners. This comprehensive Python tutorial, created by Sunny Damalu, takes you from beginner to building your own functional real-world […]
Are you ready to unlock the true rendering power of your computer and create breathtaking visuals? We just published a new course on the freeCodeCamp.org YouTube channel that will teach you the fundamentals of graphics programming. This beginner-friendly course, developed by Patt Vira, is designed for anyone eager to break into WebGL and the math […]
Do you want to get into mobile development and build cross-platform applications? We just published a comprehensive new course on the freeCodeCamp.org YouTube channel that will teach you how to build a complete, full-stack React Native application from the ground up. In this massive tutorial, you will develop a feature-rich grocery list app that runs […]