Managing Database Connections with a Pool Creating a new connection for every request is slow and wasteful. A connection pool maintains a set of ready‑to‑use c...
!Forem Logohttps://media2.dev.to/dynamic/image/width=65,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%...
The Architecture Problem In a typical Express/Mongoose app, security is often handled in the Controller layer: js // Controller const user = await User.findByI...
The Problem Ever deployed to production and anxiously refreshed dashboards wondering if critical code paths are executing? Or worse, discovered hours later tha...
Using prompt‑sync Node.js does not have a built‑in synchronous method for reading input from the terminal, so an external library such as prompt‑sync is common...
Hey Everyone, I am new to the dev community, starting out my journey again in coding. I used to code from 2013‑2018. After that I explored new opportunities, st...
When building RAG (Retrieval-Augmented Generation) for AI agents, most developers stop at 'Cosine Similarity'. They verify that Vector A is close to Vector B, a...
I Built a Task Manager Empire in One Day — And Deployed It for Free! Okay, maybe not $10M yet… but I shipped a complete Task Manager API with Node.js, Express,...
