Monitoring for Side Projects: A Simple Decision Framework

Most side projects fail at monitoring in one of two ways:

1. No monitoring at all → you find out from users.
2. Too much monitoring → you get noisy alerts and start ignoring them.

This guide gives you a simple decision framework to pick the minimum effective monitoring for your side project — and scale it only when you have proof you need more.

The Core Principle: Monitor User-Visible Failures First

If users can't:

• sign up
• log in
• pay
• use the core feature

…then you're down, even if your CPU/RAM looks fine.

So your first monitoring targets should map to user journeys, not infrastructure.

Step 1 — What Kind of Side Project Is This?

Pick the closest match:

A) Static site / landing page

Monitor: page loads + SSL expiry.

B) API / webhook service

Monitor: health endpoint + error rate + latency.

C) SaaS (frontend + backend)

Monitor: homepage, auth flow, core API, and checkout.

D) Background worker / cron product

Monitor: "last successful run" + queue depth + error rate.

Step 2 — Pick Your Tier (Based on Revenue + Risk)

Tier 0: Pre-revenue / hobby

• 1 endpoint check (homepage or /health)
• 1 notification channel (Telegram)

Tier 1: First paying customers

• 3–5 endpoint checks (homepage, auth, core API, checkout)
• Alert on sustained failures (avoid 1-off blips)
• Basic incident notes (what happened, what fixed it)

Tier 2: Meaningful revenue / reputation risk

• SLO-ish thinking: error budget, MTTR targets
• Status page + incident comms
• On-call rotation (even if it's just "weekday/weekend")

Step 3 — Decide What to Monitor (Checklist)

Uptime (black-box)

• GET / (homepage)
• GET /api/health (backend)
• POST /api/login or a synthetic check if safe
• Checkout: either a sandbox flow or a lightweight pre-check

Performance (only when it matters)

Alert if latency crosses a threshold for N minutes.

Error rate

If you have logs/APM, alert on error spikes (e.g., 5xx > 2% for 5 minutes).

Background jobs

Alert on:

• last success timestamp
• consecutive failures
• backlog growth

Step 4 — Design Alerts So You Don't Ignore Them

A good alert answers:

• What broke?
• Who is impacted?
• What should I do first?

A bad alert is: "Endpoint failed."

Minimum anti-noise rules:

• require 2–3 consecutive failures before alerting
• dedupe alerts (don't spam every minute)
• send a recovery message when fixed

Step 5 — Your First Monitoring Setup (15 minutes)

If you do nothing else, do this:

1. Pick 2 endpoints that represent your core user path
2. Check every 60s
3. Alert after 3 consecutive failures
4. Notify via Telegram

That alone prevents most "I didn't know we were down" situations.

Summary

Monitoring for side projects is about coverage with minimal noise:

• Start with user journeys
• Pick a tier based on revenue/risk
• Add performance + error-rate only when needed
• Design alerts to be actionable

Related Posts

• 5-Minute Uptime Monitoring Setup
• Uptime Monitoring for Indie Builders
• How to Reduce Alert Fatigue in Your SaaS