engineering-notes

Engineering notes — things I keep re-explaining, written down once.

Further reading

• Measuring API Boundaries in a Beginner Node.js In-App Chatbot
• Scheduled Job Failure Alerts: Node.js Heartbeats and Missed Cron Task Monitoring
• Email API for SaaS Deliverability: SPF, DKIM, DMARC, Bounces, and Event Polling
• Background job queue basics: worker consume, ack/nack retry, dead letters, idempotency