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Writing
Notes on distributed systems, web performance and the decisions that were hard to make and harder to reverse.
Retrieval first, fine-tuning last
Fine-tuning teaches a model how to sound, not what is true. Most teams reach for it early and spend months learning that their real problem was retrieval quality.
3 min read
Multi-tenancy belongs in the schema
Tenant isolation enforced in a service guard survives until the first batch job that forgets it. Enforced by the database, it survives every engineer who comes after you.
3 min read
Idempotency is a design constraint, not a retry policy
Exactly-once delivery is a marketing term. Making at-least-once safe is an architectural decision you take once, early, and never get to bolt on later.
4 min read