Two years ago, AI coding tools were a curiosity. Agencies let junior devs experiment with them on internal tools and side projects, the kind of work where nothing broke if the code was bad. Client work stayed handwritten. Nobody was betting a deadline on autocomplete. That era is over. The same tools now sit at […]
Daily Archives: July 25, 2026
When developers transition from the relational world (MySQL, PostgreSQL) to Firestore, Firebase’s NoSQL document database, they often bring their old habits with them. They try to replicate tables, foreign keys, and joins. The result? Complex queries, skyrocketing read costs, and a database structure that becomes a nightmare to maintain after just a few features. To […]
If you’ve ever loved the speed of building backend servers with Express.js, but wished you didn’t have to guess at types or debug silly runtime errors, we just posted the perfect tutorial for you. Our new video course, TypeScript in Express, is now live on the freeCodeCamp.org YouTube channel! In this hands-on tutorial, instructor Rachel […]
You’ve built and consumed APIs. You know what a GET request is, what a JSON response looks like, and how to add an Authorization header. You’ve used REST, maybe tried GraphQL, and perhaps heard of gRPC. But do you know what actually happens when your application sends a request? What travels through the wire? Why […]
Imagine your team deployed Prompt A globally two weeks ago. Tight deadlines and high confidence meant the rollout hit 100 percent of users without any A/B testing, shadow traffic, or holdout groups. While completion rates appear stable, a colleague presents a new prompt from a staging environment late at night, and that sparks the real […]