Logic Brace is a study-guide brand for backend and full-stack developers, built on one belief: interview prep should come from people who've actually built and run these systems in production — not recycled definitions copied from a dozen other PDFs. Behind Logic Brace is 11+ years of hands-on Java, Spring Boot, and microservices experience in enterprise-scale production systems — so every guide is written the way we'd explain a concept to a teammate: clearly, with working code, and with the tradeoffs that only show up once you've actually shipped it and watched it run in production. We're starting with the fundamentals that matter most to backend engineers. Our first guide — 200 Java Spring Boot Microservices interview questions, every one fully explained with a working code example — covers everything from core Spring concepts to the system-design and production-troubleshooting questions that come up once you're a few years into your career. Logic Brace is just getting started. More guides, covering more of the stack, are on the way.