Engineering notes — things I keep re-explaining, written down once.
- Polling a feature flags API from a React frontend, with safe fallback config
- Stable Feature-Flag Rollouts: A Practical Node.js Express API
- App Logging vs Error Tracking vs Metrics for Beginner SaaS Monitoring
- Email Deliverability Platform Comparison for Domain Verification and Suppression Events
- How to alert on unresolved errors from a Node.js cron job without built-in alerting