Engineering notebook
Notes from the system layer.
Practical thinking about reliable workflows, payment integrations, and the boundaries that make software easier to operate. Design guidance, not confidential project postmortems.
3 notes found
Engineering note / 5 min read
Designing AI Workflows That Survive the Request
How to design event-driven AI workflows with durable scheduling, safe retries, controlled side effects, and human review.
Read the noteEngineering note / 5 min read
Multi-Tenant Boundaries Must Follow the Data
How to carry tenant authorization through APIs, database policies, caches, background jobs, and file access, with tests for cross-tenant isolation.
Read the noteEngineering note / 5 min read
Payment Callbacks Are Evidence, Not the Whole Ledger
A practical approach to authenticating payment events, handling duplicates, and reconciling provider records with application and accounting state.
Read the note