Instrumenting My MERN E-Commerce Application with SigNoz: From Zero to Full Obse

<h2> Introduction </h2> <p>Modern applications don't fail all at once. They fail gradually.</p> <p>A payment gateway starts responding slowly. Database latency increases.

<p>Introduction</p> <p>When I started learning about application monitoring, I mostly depended on log files. If something went wrong, I had to search through many logs to find the

<p><em>This is a submission for the <a href="https://dev.to/challenges/hacktoberfest-week2-2026-10-12">Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle</a></em></p> <h2>

<blockquote> <p>PDF OCR, semantic mind maps, RAG search, and a hierarchical tag system — all generated through conversations with an AI app builder.</p> </blockquote> <p>I want to