TL;DR Hexagonal architecture is a promise: you can replace an adapter without touching the core. In this part I keep that promise by swapping the in-memory repository for PostgreSQL, and I prove it w
Senior Backend Engineer · Java, Go & AI (MCP) · Building production-grade systems
Senior Software Engineer with 14+ years building backend systems in Java (8 to 25) and Spring Boot, now also working with Go. I write about MCP, AI agents, cloud-native architecture, observability and taking systems to production. Based in Colombia.
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