Start a RAG System with Questions It Must Not Answer
A retrieval system needs evidence for answering and a deliberate path for missing evidence. Negative cases make that boundary measurable.
AI Engineering 3 min read
Blog
Notes from building and operating AI systems, commerce platforms and the measurement around them.
Designing Webhooks for Duplicates and Delayed Events
Build webhook receivers that verify input, accept work durably, handle duplicate deliveries, and reconcile state when events arrive late.
Backend Architecture 3 min read
Tenant Isolation Has to Follow the Data
Why tenant isolation must extend through database queries, caches, background jobs, retrieval, and support tooling in a SaaS application.
Backend Architecture 3 min read
Making n8n Workflows Safe to Retry
A workflow can fail after its external action succeeds. Design retries around business operations, checkpoints, and explicit failure states.
Backend Architecture 3 min read
A Backup Is Only Useful If the Restore Works
A restore-first approach to backups for small software teams, covering recovery targets, dependencies, credentials, and realistic verification.
Platform Operations 3 min read
Debugging Slow Magento Stores from the Request Inward
How I narrow a slow Magento request to the browser, cache, PHP workers, database, or an integration before changing infrastructure.
Commerce Engineering 3 min read