Engineering notes — things I keep re-explaining, written down once.
- How I Wire Node.js Backend Metrics for a Product Dashboard, and Where Flag Stats Fit
- One Decision Per Request: Feature Flag Guards in Express and Node.js
- Healthchecks vs Custom Metrics APIs for Missed Cron Alerting in Node.js SaaS
- Error tracking in a mixed Python FastAPI and Node.js stack: one schema, one trace id
- Password Reset Email Deliverability: Suppression List and Bounce Troubleshooting
- Uptime monitoring for a small Node.js SaaS: health endpoints and missed cron runs
- Centralized structured JSON logs for a small Node.js SaaS: search and dashboards