📰 Dev.to · Daniel Keya

A deep dive into the system architecture that serves 1B+ users and 34M video uploads per day. Perfect for system design interviews and curious engineers.

Every async function you write assumes the network cooperates, the server responds, and the database...

You're reviewing a teammate's pull request. The function looks fine at first glance — it's async, it...

Cryptography sounds intimidating — but once you understand the core idea behind shared-key...

Go ships with one of the most capable standard libraries of any modern language. net/http alone can...

Ever needed to look something up by value instead of by key? That's exactly what object inversion...

JavaScript's Array.prototype.filter, map, and reduce are well-known — but what about running the same...

The Full Function func Union() { if len(os.Args) < 3 { ...

Have you ever wondered how tools like fzf, VS Code's command palette, or fuzzy finders work under the...

I've been writing Go for a while now. I love its simplicity, its strictness, and the way it basically...

A step-by-step guide to building a production-ready WebSocket chat app from scratch using Go, the Gin framework, and Gorilla WebSocket — with a slick terminal-a

Learn how to build a secure, reusable JWT authentication middleware for Go applications using the Gin web framework with comprehensive testing.

M-Pesa is the backbone of digital payments in Kenya, and Safaricom’s Daraja API makes it possible for...