Engineering notes — things I keep re-explaining, written down once.
- Preventing Double Writes in a Node.js Text Summarization API with Structured Chat Results
- Express Node.js Tutorial: Private CSV Delivery Through S3-Compatible Storage
- Best Object Storage for Browser Uploads: A Presigned URL Runbook for US/EU SaaS
- Event Notifications Provider Comparison: Webhooks vs Polling for Email and SMS App Alerts
- Simple Node.js SaaS Error Alerting API: Polling and Sentry Alternatives
- Backend Error Tracking for Cron Jobs, Workers, and Web API Failures
- Signed URL Expiration for User Export Downloads from Object Storage