How can CSRF protection be customized or disabled in Spring Security?
- Configure a CsrfFilter bean to customize settings.
- Modify the csrf() method in the HttpSecurity configuration.
- Use the @EnableCsrf annotation to disable CSRF protection.
- Set csrf.enabled property to false in application.properties.
CSRF protection customization or disabling is done by modifying the csrf() method in the HttpSecurity configuration, typically by calling disable() or csrfTokenRepository(). While Option 1 is partially correct, it doesn't encompass all customization options. Options 3 and 4 are incorrect.
Which annotation is used in Spring Boot to conditionally enable or disable certain parts of auto-configuration based on the presence of specific properties?
- @ConditionalOnProperty
- @EnableAutoConfiguration
- @ConditionalOnClass
- @Configuration
In Spring Boot, the @ConditionalOnProperty annotation is used to conditionally enable or disable certain parts of auto-configuration based on the presence or absence of specific properties in the application.properties file. This provides fine-grained control over which auto-configuration options are activated based on the application's configuration. The other annotations serve different purposes in Spring Boot.
In Spring, the process of creating an instance of a bean, wiring it up, and making it available for use is called _____
- Aspect-Oriented Programming
- Bean Configuration
- Dependency Injection
- Inversion of Control (IoC)
In Spring, the process of creating an instance of a bean, wiring it up, and making it available for use is called "Dependency Injection." This core concept of Spring allows for the automatic injection of dependencies into a class, making it more flexible and easier to manage. Inversion of Control (IoC) is a broader concept that encompasses Dependency Injection. Aspect-Oriented Programming (AOP) and Bean Configuration are related but not the exact terms used for this specific process.
To include Spring MVC in a Spring Boot project, the _____ starter dependency should be added.
- spring-boot-mvc-starter
- spring-boot-web-starter
- spring-mvc-starter
- spring-web-starter
To include Spring MVC in a Spring Boot project, the spring-boot-starter-web dependency should be added. This starter includes the necessary libraries and configurations to set up Spring MVC in a Spring Boot application. It simplifies the integration of Spring MVC and provides a solid foundation for building web applications using Spring Boot.
You notice that a Spring Boot application is not evicting cache entries as expected, leading to outdated data being served. How would you diagnose and resolve this issue?
- Check the cache eviction policy configuration and ensure it's appropriately set.
- Increase the cache timeout values to prevent eviction.
- Monitor the cache utilization and memory consumption to identify issues.
- Restart the Spring Boot application to clear the cache.
When cache entries are not being evicted as expected, it's crucial to check and correct the cache eviction policy configuration. Increasing timeout values may not solve the problem and could lead to stale data. Monitoring cache utilization and memory consumption helps identify issues. Restarting the application is a heavy-handed approach and may not address the root cause.
In a Spring Cloud microservices architecture, _____ is primarily used for allowing services to discover each other.
- Eureka
- Feign
- Hystrix
- Ribbon
In a Spring Cloud microservices architecture, Eureka is primarily used for allowing services to discover each other. Eureka is a service registry and discovery server that enables microservices to find and communicate with each other. When a service starts up, it registers itself with Eureka, making it discoverable by other services. Eureka maintains a dynamic directory of available services, allowing for automatic load balancing and failover.
In Spring Security, what is the significance of configuring a global method security, and how does it differ from standard method security configurations?
- Global method security applies only to controllers, whereas standard configurations apply to service classes.
- Global method security configurations apply to all methods by default, while standard configurations require annotation-based security settings on individual methods.
- Global method security is used for securing web pages, while standard configurations are used for securing REST APIs.
- There is no difference between global method security and standard method security.
Configuring global method security allows you to set default security settings for all methods, which simplifies security setup. Standard configurations require you to annotate each method individually for security settings.
The ordering of Auto Configurations can be controlled using the @_____ annotation or property.
- AutoConfigureOrder
- ConditionalOnProperty
- ConfigurationOrder
- Order
The ordering of Auto Configurations can be controlled using the @AutoConfigureOrder annotation or the spring.autoconfigure.order property. This allows you to specify the order in which Auto Configurations should be applied during the application startup process. The lower the value, the earlier the configuration is applied.
Imagine you are working on a Spring Data JPA project where you need to implement complex dynamic queries. How would you approach designing and implementing such queries to ensure maintainability and performance?
- Combine multiple queries into a monolithic query to minimize database communication.
- Use native SQL queries for complex queries to gain maximum performance.
- Utilize the Criteria API for dynamic query generation, which offers type-safety and flexibility.
- Utilize the JPA repository's built-in findAll method and filter results programmatically in your application code.
When dealing with complex dynamic queries in Spring Data JPA, it's recommended to use the Criteria API. It provides type-safety, flexibility, and better maintainability compared to native SQL queries. Combining multiple queries into a monolithic one may hinder maintainability and lead to performance issues due to unnecessary data retrieval. Using the findAll method and filtering in your application code can be inefficient, causing the N+1 select issue.
The _____ annotation in Spring Boot is used to provide global exception handling across all @Controller classes.
- @ControllerAdvice
- @ExceptionHandler
- @RequestMapping
- @ResponseBody
To provide global exception handling across all @Controller classes in Spring Boot, you can use the @ControllerAdvice annotation. It allows you to define global exception handling logic that can be applied to multiple controllers.