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📰 Dev.to · Robins163

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I Built a RAG App That Chats With Any PDF — Here's How

Dev.to · Robins163 🔍 RAG & Vector Search ⚡ AI Lesson 5mo ago

I Built a RAG App That Chats With Any PDF — Here's How

Build a RAG app from scratch with Node.js. Upload PDFs, images, docs and ask questions.

The Node.js Event Loop — Finally Explained Right

Dev.to · Robins163 🔧 Backend Engineering ⚡ AI Lesson 5mo ago

The Node.js Event Loop — Finally Explained Right

The event loop has 6 phases, not one queue. Microtasks jump the line.

System Design: Real-Time Stock Trading Platform — From My Experience Building Mstock

Dev.to · Robins163 🏗️ Systems Design & Architecture ⚡ AI Lesson 5mo ago

System Design: Real-Time Stock Trading Platform — From My Experience Building Mstock

Full system design of a stock trading platform handling 100K+ concurrent users.

How Redis Caching Actually Works — A Visual Guide for Backend Developers

Dev.to · Robins163 🔧 Backend Engineering ⚡ AI Lesson 5mo ago

How Redis Caching Actually Works — A Visual Guide for Backend Developers

TL;DR: Redis caching sits between your application and database, storing frequently accessed data in...