Architecture
Designing multi-tenant SaaS authorization correctly
Why tenant isolation must be a system invariant—not a collection of route-level checks.
7 min read
Insights
Notes on building systems that have to work.
Practical writing on architecture, operational software, infrastructure and the engineering decisions that become visible under production conditions.
Infrastructure
What application-layer caching actually changes under load
Caching moves pressure and failure. Good designs make that movement explicit.
6 min read
Product engineering
Why operational software fails even when the interface works
The difficult part of internal software is preserving reality across exceptions, handoffs and incomplete information.
8 min read
Systems
Designing transaction systems around unreliable third-party integrations
A practical model for retries, idempotency and operator-controlled recovery.
9 min read