Writing

Blog

Concise technical articles on systems I work with day to day: typing, databases, streaming APIs, automation, and production operations. Sources live in content/blog.

• Nov 2, 2023·observabilitymicroservices

  Correlation IDs and trace context across services

  Propagating request identifiers through gateways, workers, and async jobs so incidents get a single timeline instead of log archaeology.

• Oct 14, 2023·TypeScriptAPI design

  Zod at the API boundary: validate, then trust your types

  Runtime validation for untrusted JSON, consistent 400 responses, and schemas that can align with OpenAPI and handler logic.

• Sep 19, 2023·DockerDevOps

  Docker multi-stage builds for production Node.js images

  Separating build-time dependencies from runtime artifacts, running as non-root, and keeping images small enough to pull quickly at scale.

• Aug 8, 2023·engineering-practicefeature-flags

  Feature flags: controlled rollout without architectural debt

  Centralizing flag identifiers, evaluating at boundaries, and retiring flags so experiments do not become permanent branches.

• Jul 25, 2023·backenddistributed-systems

  Webhook idempotency and the transactional outbox

  Designing for at-least-once delivery: deduplication keys, safe retries, and publishing after commit without dual-write hazards.

• Jun 12, 2023·CI/CDGitHub Actions

  GitHub Actions: matrices and required checks without YAML sprawl

  Centralizing lint, typecheck, and tests in one workflow—matrixed where it matters, protected by branch rules.

• May 30, 2023·Node.jsstreams

  Node.js streams: memory-safe handling of large uploads

  Why buffering entire request bodies fails at scale, and how pipeline and backpressure keep the process stable under load.

• Apr 18, 2023·Reactobservability

  React error boundaries: resilience and signals that scale

  Isolating UI failures, shipping structured client logs, and keeping PII out of the payload—patterns that hold up in production.

• Mar 22, 2023·PostgreSQLperformance

  PostgreSQL: indexes and EXPLAIN for predictable latency

  A practical workflow for turning slow queries into stable plans—EXPLAIN, composite indexes, and when partial indexes pay off.

• Feb 14, 2023·TypeScriptarchitecture

  Domain modeling in TypeScript at scale

  Using discriminated unions and nominal typing so invalid states are unrepresentable—and refactors stay mechanical.

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