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📰 Dev.to · Daniel Keya

11 articles · Updated every 3 hours · View all reads

All Articles 131,485 Blog Posts 136,280 Tech Tutorials 34,036 Research Papers 25,454 News 18,691 ⚡ AI Lessons

Day 2 of 30: Databases, Replication, and Sharding published: false tags: systemdesign, beginners, learning, databases

Dev.to · Daniel Keya ⚡ AI Lesson 2w ago

Day 2 of 30: Databases, Replication, and Sharding published: false tags: systemdesign, beginners, learning, databases

Recap Yesterday was about the big picture — client-server architecture, scaling, latency...

Designing TikTok from Scratch — A System Design Deep Dive

Dev.to · Daniel Keya 🏗️ Systems Design & Architecture ⚡ AI Lesson 1mo ago

Designing TikTok from Scratch — A System Design Deep Dive

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.

Two tiny functions that make your async code production-ready: `retry` and `timeout`

Dev.to · Daniel Keya 🔧 Backend Engineering ⚡ AI Lesson 2mo ago

Two tiny functions that make your async code production-ready: `retry` and `timeout`

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

When async functions tell stories: dissecting a real-world JavaScript code review

Dev.to · Daniel Keya 🔧 Backend Engineering ⚡ AI Lesson 2mo ago

When async functions tell stories: dissecting a real-world JavaScript code review

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

Shared-Key Cryptosystems in JavaScript: A Practical Guide

Dev.to · Daniel Keya 🔐 Cybersecurity ⚡ AI Lesson 2mo ago

Shared-Key Cryptosystems in JavaScript: A Practical Guide

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

Go Backend Frameworks: Which One Should You Actually Use?

Dev.to · Daniel Keya 🔧 Backend Engineering ⚡ AI Lesson 2mo ago

Go Backend Frameworks: Which One Should You Actually Use?

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

Inverting an Object in JavaScript: Swap Keys and Values

Dev.to · Daniel Keya 🔧 Backend Engineering ⚡ AI Lesson 2mo ago

Inverting an Object in JavaScript: Swap Keys and Values

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

Building a Nutrition Calculator in JavaScript: filter, map, and reduce on Objects

Dev.to · Daniel Keya ⚡ AI Lesson 2mo ago

Building a Nutrition Calculator in JavaScript: filter, map, and reduce on Objects

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

String Union in Go: Merging Two Strings Without Duplicates

Dev.to · Daniel Keya 🔧 Backend Engineering ⚡ AI Lesson 2mo ago

String Union in Go: Merging Two Strings Without Duplicates

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

From Go to JavaScript: A Gopher's Honest First Impressions

Dev.to · Daniel Keya ⚡ AI Lesson 2mo ago

From Go to JavaScript: A Gopher's Honest First Impressions

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

Build a Real-Time Chat App with Go, Gin & WebSockets

Dev.to · Daniel Keya ⚡ AI Lesson 4mo ago

Build a Real-Time Chat App with Go, Gin & WebSockets

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