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.

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, 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.

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 @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.

When there are multiple beans of the same type, you can specify which bean should be autowired using the @Qualifier annotation with the desired bean's name. This helps Spring resolve the ambiguity. The other options, while related to dependency injection, do not directly address the issue of selecting a specific bean from multiple candidates.

The @Service annotation in Spring Boot is a specialized form of the @Component annotation used to indicate service components. It is used to define a class as a service in the Spring application context. While @Repository is used for DAOs, @Controller is used for controllers, and @Bean is a more generic annotation for creating managed beans. The @Service annotation provides additional semantic meaning to the class.

The @Bean annotation is used to define a bean in the Spring context. When you annotate a method with @Bean, it tells Spring that the method should be used to create and configure a bean. This is commonly used for defining custom beans in Java-based Spring configurations. The other annotations (@Inject, @Component, and @Service) have different purposes and are not used for defining beans in the same way as @Bean.

To externalize error messages for validation constraints in Spring Boot, you can use the message property in the constraint annotation, and then reference externalized messages using a message source, often defined in a properties file or through Spring's message source mechanisms. This approach makes it easier to manage and internationalize error messages.

To include additional information in the OAuth2 access token, you can implement a custom token enhancer by extending DefaultTokenServices. This allows you to manipulate the token content and add the desired information. The other options are not typically used for token enhancement.