Top 80+ Spring boot Interview Questions and Answers in 60 min | 2026 | Code Decode
Master Spring Boot with this complete Spring Boot Interview Questions and Answers guide covering 94 essential topics for Java Backend Developers, Spring Developers, and Microservices Engineers.
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In this video, you will learn Spring Boot Fundamentals, Spring MVC, REST APIs, Spring Data JPA, Hibernate, Spring Security, JWT Authentication, OAuth 2.0, Microservices Architecture, Testing, Monitoring, Observability, Actuator, Prometheus, Grafana, OpenTelemetry, and much more.
Topics Covered:
Spring Boot Fundamentals
Dependency Injection and Spring Beans
Auto Configuration and Component Scanning
Spring Profiles and Configuration Management
Spring MVC and REST API Development
Request Lifecycle and DispatcherServlet
Exception Handling and Validation
API Versioning and Swagger Documentation
Spring Data JPA and Hibernate
Entity Lifecycle and Transactions
Lazy Loading vs Eager Loading
N+1 Query Problem and Solutions
JPQL, Native Queries, and Criteria API
Spring Security Fundamentals
Authentication and Authorization
JWT Authentication Implementation
OAuth 2.0 and OpenID Connect
REST API Security Best Practices
Microservices Architecture
Service Discovery and API Gateway
Circuit Breaker and Resilience Patterns
Saga Pattern and Eventual Consistency
Unit Testing and Integration Testing
Mockito, MockMvc, and Testcontainers
Spring Boot Actuator
Micrometer Metrics
Prometheus and Grafana Monitoring
Distributed Tracing with OpenTelemetry
This Spring Boot Interview Preparation video is ideal for:
Java Developer Interviews
Spring Boot Interviews
Backend Developer Interviews
Full Stack Developer Interviews
Software Engineer Interviews
Senior Java Developer Interviews
Microservices Interviews
System Design Preparation
Whether you are a fresher, experienced developer, or preparing for product-based company interviews, this comprehensive Spring Boot interview guide will help you strengthen your concepts and crack technical interviews confidently.
Spring Boot Version Covered:
Spring Boot 3.x
Spring Framework 6
Java 17+
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