Notes on system design, Java/Spring, Go and learning in public.https://danilocordeiro.dev/enhttps://danilocordeiro.dev/en/blog/extracting-a-module-into-a-service/https://danilocordeiro.dev/en/blog/extracting-a-module-into-a-service/The real signals for leaving the modular monolith, the false ones, and a step-by-step extraction with no big bang: facade, remote adapter, events on the broker and the schema leaving last.Wed, 28 Oct 2026 00:00:00 GMTarquiteturamonolito-modularmicrosservicosjavahttps://danilocordeiro.dev/en/blog/communication-between-modules/https://danilocordeiro.dev/en/blog/communication-between-modules/Enforced boundaries solve half the problem. The other half is how modules talk without coupling: when to call, when to publish an event and how not to lose events along the way.Tue, 20 Oct 2026 00:00:00 GMTarquiteturamonolito-modularevent-drivenjavapythonhttps://danilocordeiro.dev/en/blog/module-boundaries-enforced-in-ci/https://danilocordeiro.dev/en/blog/module-boundaries-enforced-in-ci/A module boundary that only exists in a diagram won't survive the first tight deadline. How to make the build break when someone crosses a boundary, in Python, Java and Go.Tue, 20 Oct 2026 00:00:00 GMTarquiteturamonolito-modularpythonjavagohttps://danilocordeiro.dev/en/blog/strategic-ddd-subdomains-bounded-contexts/https://danilocordeiro.dev/en/blog/strategic-ddd-subdomains-bounded-contexts/Before you think about modules or services, you need to know where the boundaries are. A practical guide using Evans, Vernon and Khononov, applied to a school platform.Sat, 10 Oct 2026 00:00:00 GMTarquiteturadddmonolito-modularkotlinhttps://danilocordeiro.dev/en/blog/monorepo-modular-monolith-microservices/https://danilocordeiro.dev/en/blog/monorepo-modular-monolith-microservices/Where the code lives, how many processes you deploy and how coupled the code is are separate decisions. A real project with one codebase, three deployables and boundaries checked in CI.Thu, 08 Oct 2026 00:00:00 GMTarquiteturamonolito-modularpythonhttps://danilocordeiro.dev/en/blog/hello-world/https://danilocordeiro.dev/en/blog/hello-world/What you'll find here: system design, Java/Spring, Go and a log of my study routine.Wed, 07 Oct 2026 00:00:00 GMTaprendizadometahttps://danilocordeiro.dev/en/blog/laya-hermes-intent-router/https://danilocordeiro.dev/en/blog/laya-hermes-intent-router/I tested Laya, a local classifier, in Portuguese and wired it into Hermes Agent over MCP. The numbers, what went wrong and where it pays off.Wed, 07 Oct 2026 00:00:00 GMTiaaprendizado