Notes on software engineering by Barabás Ákos.https://barabasakos.hu/en-UShttps://barabasakos.hu/blog/exactly-once-is-usually-a-myth/https://barabasakos.hu/blog/exactly-once-is-usually-a-myth/Most distributed systems don't process messages exactly once. Designing software that behaves correctly anyway is the real challenge.Mon, 20 Jul 2026 00:00:00 GMThttps://barabasakos.hu/blog/why-fast-queries-become-slow/https://barabasakos.hu/blog/why-fast-queries-become-slow/Query performance rarely changes overnight. More often, the data simply outgrows the assumptions the query was built on.Sat, 18 Jul 2026 00:00:00 GMThttps://barabasakos.hu/blog/observability-before-scalability/https://barabasakos.hu/blog/observability-before-scalability/Scaling a system without understanding it usually makes the same problems more expensive.Mon, 22 Jun 2026 00:00:00 GMT