The Complete Backend Interview Handbook

Backend interviews aren't Java interviews or Spring interviews. They're both — plus everything that happens when your code meets real traffic.

This is both handbooks in one continuous volume: 740 questions across 59 chapters, from the JVM to auto-configuration to distributed systems.

Book One — Java: the platform, OOP, memory and garbage collection, collections, concurrency, Java 8, backend engineering, microservices.

Book Two — Spring Boot: auto-configuration internals, the container, the web layer, data access, security, monitoring, resilience.

Every topic follows the same format: the answer you say out loud · the mechanism underneath · a plain-English analogy · the follow-up trap · the production incident · one line for the night before.

Plus 105 production scenarios, 50 system design questions, and a 15-question debugging playbook — the material that decides senior-level offers.

201 pages. 740 questions. The whole backend interview in one file.