Spring Boot interview questions cover auto-configuration, dependency injection, REST APIs, security, testing, and microservices patterns. Expect questions on the Spring ecosystem, starter dependencies, actuator endpoints, and production-ready deployment.
Spring Core & Framework (Beginner) (15)
Spring Core & Framework beginner-level questions to help you prepare.
easy What is the Spring Framework?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is Spring Boot and how is it different from the Spring Framework?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What are the advantages of using Spring Boot?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What are the key components of Spring Boot?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is Inversion of Control (IoC)?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is Dependency Injection and what are its types?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is the Spring IoC container?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is a Spring Bean?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What bean scopes does Spring support?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is the difference between BeanFactory and ApplicationContext?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What does the @SpringBootApplication annotation do internally?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is the purpose of @ComponentScan?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy How does a Spring Boot application get started?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is Spring Initializr?
What interviewers evaluate: 1. Spring Core & IoC Container
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easy What is the Spring Boot CLI?
What interviewers evaluate: 1. Spring Core & IoC Container
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Spring Core & Framework (Intermediate) (17)
Spring Core & Framework intermediate-level questions to help you prepare.
medium What is the difference between constructor injection and setter injection?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the difference between @Component, @Service, @Repository, and @Controller?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the difference between @Bean and @Component?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the @Configuration annotation and what problem does it solve?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the @Autowired annotation and how does it work?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the @Qualifier annotation used for?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is bean auto-wiring and what are its modes?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What are the limitations of auto-wiring?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the Bean lifecycle in Spring?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium Explain inner beans in Spring.
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is Bean Wiring?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What are Spring Profiles and how do you use them?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium Are singleton beans thread-safe in Spring?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium In which scenario would you use singleton vs prototype scope?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the difference between application.properties and application.yml?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is the difference between application.properties and bootstrap.properties?
What interviewers evaluate: 1. Spring Core & IoC Container
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medium What is @ConfigurationProperties in Spring Boot?
What interviewers evaluate: 1. Spring Core & IoC Container
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Spring Core & Framework (Advanced) (8)
Spring Core & Framework advanced-level questions to help you prepare.
hard What causes circular dependency errors in Spring and how do you fix them?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard Why does field injection cause testing and immutability issues?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard What are common reasons for slow Spring Boot application startup?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard How can you achieve thread-safety in beans?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard What is a Proxy in Spring and when is it used?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard How do you get the list of all beans in your Spring Boot application?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard What is the difference between @Autowired and @Inject?
What interviewers evaluate: 1. Spring Core & IoC Container
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hard Explain how Spring Boot handles externalized configuration and its order of precedence.
What interviewers evaluate: 1. Spring Core & IoC Container
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Spring Boot Auto-Configuration (Beginner) (5)
Spring Boot Auto-Configuration beginner-level questions to help you prepare.
easy What is Spring Boot auto-configuration?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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easy What are Spring Boot starter dependencies?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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easy What is the default port of Tomcat in Spring Boot?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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easy How do you change the port of the embedded Tomcat server?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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easy What is the starter dependency for a Spring Boot web application?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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Spring Boot Auto-Configuration (Intermediate) (10)
Spring Boot Auto-Configuration intermediate-level questions to help you prepare.
medium How does Spring Boot auto-configuration work internally?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium How do you disable a specific auto-configuration class?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium Can you replace the embedded Tomcat server with another server (Jetty, Undertow)?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium Can you create a non-web application in Spring Boot?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium What is Spring Boot dependency management and how does it simplify projects?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium What is the difference between @SpringBootApplication and @EnableAutoConfiguration?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium Can you disable the default web server in a Spring Boot application?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium What are Spring Boot DevTools and what do they provide?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium What is the difference between WAR deployment and embedded containers?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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medium Where do you define properties in a Spring Boot application?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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Spring Boot Auto-Configuration (Advanced) (5)
Spring Boot Auto-Configuration advanced-level questions to help you prepare.
hard How do you create a custom Spring Boot starter?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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hard How do you create a custom auto-configuration class?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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hard Explain the role of spring.factories (or META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports).
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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hard How do conditional annotations (@ConditionalOnClass, @ConditionalOnProperty, etc.) work?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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hard How do you deploy a Spring Boot application to an external server?
What interviewers evaluate: 2. Spring Boot Auto-Configuration & Starters
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Spring MVC & REST APIs (Beginner) (5)
Spring MVC & REST APIs beginner-level questions to help you prepare.
easy What is Spring MVC?
What interviewers evaluate: 3. Spring MVC & REST APIs
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easy What is the @RestController annotation?
What interviewers evaluate: 3. Spring MVC & REST APIs
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easy What is the difference between @Controller and @RestController?
What interviewers evaluate: 3. Spring MVC & REST APIs
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easy What is the difference between @RequestMapping and @GetMapping?
What interviewers evaluate: 3. Spring MVC & REST APIs
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easy Describe the flow of an HTTP request through a Spring Boot application.
What interviewers evaluate: 3. Spring MVC & REST APIs
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Spring MVC & REST APIs (Intermediate) (12)
Spring MVC & REST APIs intermediate-level questions to help you prepare.
medium What is the DispatcherServlet and how does it work?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is the difference between @RequestParam, @PathVariable, and @RequestBody?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is the @ResponseBody annotation?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is the role of @ModelAttribute?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium How does Spring Boot handle exceptions in REST APIs?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is @ControllerAdvice and @ExceptionHandler?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is Thymeleaf and how is it used in Spring Boot?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is Spring Data REST?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium Why is Spring Data REST not recommended in real-world production applications?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What are Spring Interceptors and how do they work?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium How is form data validation done in Spring MVC?
What interviewers evaluate: 3. Spring MVC & REST APIs
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medium What is content negotiation in Spring MVC?
What interviewers evaluate: 3. Spring MVC & REST APIs
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Spring MVC & REST APIs (Advanced) (7)
Spring MVC & REST APIs advanced-level questions to help you prepare.
hard How do you version REST APIs in Spring Boot?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard How do you handle CORS (Cross-Origin Resource Sharing) in Spring Boot?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard What is HATEOAS and how do you implement it?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard What is the difference between synchronous and asynchronous request handling in Spring MVC?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard What is Spring WebFlux and how does it differ from Spring MVC?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard What is Reactive Programming in Spring?
What interviewers evaluate: 3. Spring MVC & REST APIs
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hard What is the difference between WebClient and RestTemplate?
What interviewers evaluate: 3. Spring MVC & REST APIs
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Spring Data JPA (Beginner) (4)
Spring Data JPA beginner-level questions to help you prepare.
easy What is Spring Data JPA?
What interviewers evaluate: 4. Spring Data JPA & Database
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easy What is a JPA Repository?
What interviewers evaluate: 4. Spring Data JPA & Database
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easy What is the difference between CrudRepository and JpaRepository?
What interviewers evaluate: 4. Spring Data JPA & Database
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easy How do you connect a Spring Boot application to a database using JDBC?
What interviewers evaluate: 4. Spring Data JPA & Database
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Spring Data JPA (Intermediate) (12)
Spring Data JPA intermediate-level questions to help you prepare.
medium What is the @Entity annotation?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the @Transactional annotation and how does it work?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium Why does @Transactional sometimes not work in Spring Boot?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the N+1 query problem and how do you solve it?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the difference between FetchType.LAZY and FetchType.EAGER?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium Why does LazyInitializationException occur and how do you fix it?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium How is Hibernate chosen as the default JPA implementation without explicit configuration?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What are derived query methods in Spring Data JPA?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the @Query annotation for custom queries?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the difference between JPQL and native SQL queries in Spring Data?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What are the types of transaction management Spring supports?
What interviewers evaluate: 4. Spring Data JPA & Database
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medium What is the significance of the @Repository annotation beyond being a stereotype?
What interviewers evaluate: 4. Spring Data JPA & Database
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Spring Data JPA (Advanced) (7)
Spring Data JPA advanced-level questions to help you prepare.
hard Why is spring.jpa.hibernate.ddl-auto=update not recommended in production?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard How do you implement database migration with Flyway or Liquibase in Spring Boot?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard What is Spring DAO support?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard How do you implement pagination and sorting with Spring Data JPA?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard What is the second-level cache in Hibernate and how do you configure it in Spring Boot?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard How do you implement auditing (created date, modified date) with Spring Data JPA?
What interviewers evaluate: 4. Spring Data JPA & Database
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hard What is the difference between optimistic and pessimistic locking in JPA?
What interviewers evaluate: 4. Spring Data JPA & Database
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Spring Security (Beginner) (7)
Spring Security beginner-level questions to help you prepare.
easy What is Spring Security?
What interviewers evaluate: 5. Spring Security
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easy What is the difference between authentication and authorization?
What interviewers evaluate: 5. Spring Security
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easy What is basic authentication in Spring Security?
What interviewers evaluate: 5. Spring Security
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easy What are the primary features of Spring Security?
What interviewers evaluate: 5. Spring Security
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easy What is the UserDetailsService interface?
What interviewers evaluate: 5. Spring Security
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easy What is the PasswordEncoder interface and why is it important?
What interviewers evaluate: 5. Spring Security
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easy What is CSRF (Cross-Site Request Forgery) and how does Spring Security protect against it?
What interviewers evaluate: 5. Spring Security
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Spring Security (Intermediate) (14)
Spring Security intermediate-level questions to help you prepare.
medium What is the Spring Security Filter Chain and how does it work?
What interviewers evaluate: 5. Spring Security
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medium What is the SecurityContextHolder and SecurityContext?
What interviewers evaluate: 5. Spring Security
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medium What is the AuthenticationManager and ProviderManager?
What interviewers evaluate: 5. Spring Security
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medium What is the difference between hasRole and hasAuthority?
What interviewers evaluate: 5. Spring Security
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medium What are @PreAuthorize and @PostAuthorize annotations?
What interviewers evaluate: 5. Spring Security
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medium What is the difference between @PreAuthorize and @Secured?
What interviewers evaluate: 5. Spring Security
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medium What is the difference between @Secured and @RolesAllowed?
What interviewers evaluate: 5. Spring Security
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medium What is method-level security and why do you need it?
What interviewers evaluate: 5. Spring Security
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medium What is OAuth2 and how does Spring Security implement it?
What interviewers evaluate: 5. Spring Security
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medium What is JWT (JSON Web Token) and how is it used with Spring Security?
What interviewers evaluate: 5. Spring Security
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medium How do you handle session management in Spring Security?
What interviewers evaluate: 5. Spring Security
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medium How do you configure role-based access control (RBAC)?
What interviewers evaluate: 5. Spring Security
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medium What is DelegatingFilterProxy?
What interviewers evaluate: 5. Spring Security
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medium How do you secure RESTful APIs with Spring Security?
What interviewers evaluate: 5. Spring Security
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Spring Security (Advanced) (10)
Spring Security advanced-level questions to help you prepare.
hard How do you implement a custom AuthenticationProvider?
What interviewers evaluate: 5. Spring Security
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hard How do you implement token revocation in OAuth2 with Spring Security?
What interviewers evaluate: 5. Spring Security
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hard How do you implement two-factor authentication in Spring Security?
What interviewers evaluate: 5. Spring Security
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hard What are the implications of stateless session management for REST APIs?
What interviewers evaluate: 5. Spring Security
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hard How do you secure a microservices architecture using Spring Security?
What interviewers evaluate: 5. Spring Security
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hard How do you configure Spring Security for a multi-tenant application?
What interviewers evaluate: 5. Spring Security
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hard How do you secure WebSocket connections with Spring Security?
What interviewers evaluate: 5. Spring Security
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hard How do you implement custom security annotations?
What interviewers evaluate: 5. Spring Security
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hard What is Spring Security ACL (Access Control List) and how do you implement fine-grained access control?
What interviewers evaluate: 5. Spring Security
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hard How do you use Spring Security in a reactive programming model (WebFlux)?
What interviewers evaluate: 5. Spring Security
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Spring Microservices (Beginner) (4)
Spring Microservices beginner-level questions to help you prepare.
easy What is a microservice and how is it different from a monolith?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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easy What is Spring Cloud?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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easy How do microservices communicate with each other?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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easy What is service discovery and why do we need it?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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Spring Microservices (Intermediate) (9)
Spring Microservices intermediate-level questions to help you prepare.
medium What is an API Gateway and why is it important?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium Explain the role of Eureka in a Spring Boot microservice architecture.
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium How do you handle configuration management across microservices (Spring Cloud Config)?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium How do you achieve load balancing in microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium What is circuit breaking and how does it help? (Resilience4j / Hystrix)
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium What is distributed tracing and how do you implement it? (Zipkin, Sleuth, Micrometer Tracing)
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium How do you manage centralized logging across multiple microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium How do microservices share data?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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medium What is eventual consistency?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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Spring Microservices (Advanced) (9)
Spring Microservices advanced-level questions to help you prepare.
hard What is the Saga pattern in microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard What is the difference between orchestration and choreography in microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard How do you version APIs in a microservices architecture?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard How do you implement security for microservice-to-microservice communication?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard What are some common challenges in a microservices architecture and how do you address them?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard How do you deploy microservices in production? (Docker, Kubernetes)
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard How does a Spring Boot microservice discover dependent microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard What is the CQRS (Command Query Responsibility Segregation) pattern?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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hard How do you handle distributed transactions across microservices?
What interviewers evaluate: 6. Spring Microservices (Cloud, Gateway, Config)
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Spring Boot Testing (Beginner) (3)
Spring Boot Testing beginner-level questions to help you prepare.
easy How does Spring Boot simplify writing tests?
What interviewers evaluate: 7. Testing in Spring Boot
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easy What starter dependency do you need for testing a Spring Boot application?
What interviewers evaluate: 7. Testing in Spring Boot
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easy What dependencies does spring-boot-starter-test bring to the classpath?
What interviewers evaluate: 7. Testing in Spring Boot
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Spring Boot Testing (Intermediate) (11)
Spring Boot Testing intermediate-level questions to help you prepare.
medium What does @SpringBootTest do and how does it interact with @SpringBootApplication?
What interviewers evaluate: 7. Testing in Spring Boot
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medium When do you want to use @SpringBootTest vs slice test annotations?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What does @SpringBootTest auto-configure?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What is @WebMvcTest and what does it auto-configure?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What is MockMvc and how do you use it for testing controllers?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What is the difference between @MockBean and @Mock?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What is @DataJpaTest and when do you use it?
What interviewers evaluate: 7. Testing in Spring Boot
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medium How are mock frameworks such as Mockito used in Spring Boot?
What interviewers evaluate: 7. Testing in Spring Boot
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medium When and where do you use @Transactional in testing?
What interviewers evaluate: 7. Testing in Spring Boot
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medium What is the @DirtiesContext annotation and when do you use it?
What interviewers evaluate: 7. Testing in Spring Boot
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medium How do you perform integration testing with @SpringBootTest for a web application?
What interviewers evaluate: 7. Testing in Spring Boot
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Spring Boot Testing (Advanced) (5)
Spring Boot Testing advanced-level questions to help you prepare.
hard What is the difference between @ContextConfiguration and @SpringBootTest?
What interviewers evaluate: 7. Testing in Spring Boot
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hard How do you use TestContainers for integration tests in Spring Boot?
What interviewers evaluate: 7. Testing in Spring Boot
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hard How do you test microservices with contract testing (Spring Cloud Contract)?
What interviewers evaluate: 7. Testing in Spring Boot
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hard How do you test asynchronous operations in Spring Boot?
What interviewers evaluate: 7. Testing in Spring Boot
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hard What is the difference between unit testing and integration testing in a Spring Boot context?
What interviewers evaluate: 7. Testing in Spring Boot
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Spring Boot Actuator & Monitoring (Beginner) (3)
Spring Boot Actuator & Monitoring beginner-level questions to help you prepare.
easy What is Spring Boot Actuator?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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easy How do you enable Actuator in a Spring Boot application?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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easy What are the default endpoints provided by Actuator?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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Spring Boot Actuator & Monitoring (Intermediate) (5)
Spring Boot Actuator & Monitoring intermediate-level questions to help you prepare.
medium What are the actuator-provided endpoints used for monitoring (health, info, metrics, env, beans)?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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medium How do you enable or disable specific Actuator endpoints?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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medium How do you secure Actuator endpoints?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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medium How do you check environment properties in your Spring Boot application?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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medium How do you enable debug logging in a Spring Boot application?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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Spring Boot Actuator & Monitoring (Advanced) (5)
Spring Boot Actuator & Monitoring advanced-level questions to help you prepare.
hard How do you create custom Actuator endpoints?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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hard How do you integrate Spring Boot Actuator with Prometheus and Grafana for monitoring?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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hard What is Micrometer and how does it relate to Spring Boot Actuator?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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hard How do you monitor JVM metrics, thread pools, and database connections with Actuator?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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hard How do you implement health indicators for custom components?
What interviewers evaluate: 8. Performance & Monitoring (Actuator)
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Spring AOP (Beginner) (3)
Spring AOP beginner-level questions to help you prepare.
easy What is Aspect-Oriented Programming (AOP)?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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easy What is a JoinPoint?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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easy What is an Advice and what are its types?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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Spring AOP (Intermediate) (4)
Spring AOP intermediate-level questions to help you prepare.
medium What is an Aspect?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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medium What is a Pointcut?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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medium What is Weaving and when does it happen?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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medium What is the difference between concern and cross-cutting concern?
What interviewers evaluate: 9. Aspect-Oriented Programming (AOP) -- Bonus Section
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Top 15 Recommended Questions for MockIF Practice (8)
Start here. The 15 most impactful Spring Boot interview questions covering auto-configuration, dependency injection, REST APIs, JPA, and security.
medium What is Spring Boot auto-configuration and how does it work?
What interviewers evaluate: Auto-Config
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medium What is Spring Boot Actuator and what endpoints does it provide?
What interviewers evaluate: Actuator
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medium What is Spring Security Filter Chain and how does it work?
What interviewers evaluate: Security
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medium What is a circuit breaker pattern and how do you implement it in Spring?
What interviewers evaluate: Microservices
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medium What is the difference between @SpringBootTest and @WebMvcTest?
What interviewers evaluate: Testing
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medium How do you handle exceptions in Spring Boot REST APIs? (@ControllerAdvice)
What interviewers evaluate: MVC/REST
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hard What is the Saga pattern for distributed transactions in microservices?
What interviewers evaluate: Microservices
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hard How do you implement JWT-based authentication with Spring Security?
What interviewers evaluate: Security
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