I Built a RAG Agent From Scratch — Here's What I Actually Learned

February 27, 2026 · Dev.to

AI Coding Assistants and the Erosion of Ubiquitous Language
In my previous two posts, I’ve written about integrating AI into Spring Boot systems without collapsing architectural bo
MCP Has a Supply Chain Problem
In 2018 the event-stream npm package got a malicious update that targeted a specific Bitcoin wallet. Millions of downloa
How We’re Surviving 20+ Domains and 100+ SQL Tables While Migrating Our Legacy .NET Backend to GraphQL
Introduction In Part 1 – How We’re Surviving 600+ Legacy Angular Components While Migrating to Next.js, GraphQL, and a M
The New AWS AI Era: When the Cloud Becomes a Platform for Agents, Chips, and Scalable Productivity
There are moments when a company does not just ship new features, it changes how it works internally to deliver a new er
Elasticsearch vs OpenSearch: Compared
Quick Verdict OpenSearch is the better choice for most self-hosters. It includes security, alerting, and anomaly detecti