Java Microservices Interview Guide for Experienced Developers: Scenario-Based Questions on Java 17, Spring Boot, Kafka, REST APIs, Oracle, and System Design

by Sreenivas

Prepare for Java backend interviews with a practical guide focused on real-world technical decisions.This book contains 150 interview questions with concise sample answers for experienced developers. Topics include Java 17, collections, concurrency, Spring Boot, REST APIs, security, Oracle, transactions, microservices, Kafka, reliability, testing, deployment, and system design.
You’ll also work through 50 production scenario drills involving duplicate requests, Kafka retries, slow endpoints, database issues, security problems, and failed deployments. The answers help you explain what you would do, why you would do it, and how you would test and monitor the result.
Inside the book, you’ll find questions with sample answers, production scenario drills, coverage of Java, Spring Boot, Kafka, Oracle, and system design, plus a four-week interview practice plan.
Use this guide to practise aloud, strengthen your technical explanations, and connect interview concepts to systems you know. The answers are concise starting points; add examples from your own experience to make them your own.

67 pages, Kindle Edition

Published October 1, 2026