Technical notes from building production business systems — written from experience, not theory.
13 articles · payroll, POS, multi-tenant, Go, PostgreSQL
April 20, 2026 · 6 min read
Bad error handling leaks internal details to users and makes debugging hard. Here is the Go error pattern I use: sentinel errors, wrapping with %w, mapping to HTTP at one point, and safe messages.
Go · Error Handling · API · Security
April 6, 2026 · 7 min read
JWT is easy to use, but just as easy to use insecurely. Here is the auth pattern I apply: short access tokens, refresh rotation, reuse detection, and storage in HttpOnly cookies.
Security · Auth · JWT · Go
March 22, 2026 · 6 min read
The N+1 query is the most common and most frequently missed performance killer — instant on seed data, timing out on real tables. Here is how to recognize, measure, and fix it before production finds it for you.
Performance · Database · PostgreSQL · Optimization
March 8, 2026 · 8 min read
There is no best stack, only the one that fits your problem, team, and scale. An honest guide to choosing a backend for business systems — from building with all three in production.
Architecture · Go · Java · Laravel