Why I Built My Own Web Application Monitoring System

Why I Built My Own Monitoring System

Most developers rely on third-party tools for monitoring errors, performance, and uptime. They work well—but over time I realized I was using these tools without truly understanding how they function internally.

So I decided to build my own Web Application Monitoring System.

The goal wasn’t to replace existing tools, but to understand how real production signals flow—from application events to backend processing to actionable insights.

What This Project Focuses On

Performance monitoring (latency, response times)

Error tracking with grouping and stack traces

Backend health visibility

Actionable signals, not just raw logs

A core idea behind the system is simple:

Failures are not just bugs — they are data.

Instead of treating errors as isolated incidents, the system models them as signals that reveal system behavior over time.

What I Learned

Observability is full of trade-offs (sampling, storage, accuracy)

Error grouping is harder than it looks

Metrics are useless unless they help you make decisions

Building this taught me more about backend systems than any tutorial ever could.

Open Source

I open-sourced the project so others can learn from it, improve it, and experiment with real monitoring concepts.

🔗 GitHub:
https://github.com/AfrozSheikh/Web-Application-Monitoring-System-

If you’re interested in backend reliability, observability, or system design, this project might be useful to you.

Contributions and feedback are welcome.