Java Multithreading and Parallel Programming Masterclass - Running Asynchronous Workloads on Spring Boot

The video tutorial introduces the Spring Boot framework and discusses the limitations of using Tomcat threads for handling heavy workloads. It explains the importance of using a dedicated thread pool for asynchronous operations to improve scalability. The tutorial demonstrates how to enable asynchronous workloads in Spring Boot using annotations and how to create and use services for these operations. It also covers customizing thread pools and highlights best practices for building scalable web applications.

What is the main limitation of using Tomcat threads for handling heavy workloads in Spring Boot?

• They are not compatible with Spring Boot.

• They can handle only one request at a time.

• They are not designed for executing heavy workloads.

• They are too fast for heavy workloads.

Which annotation is used to enable asynchronous processing in a Spring Boot application?

• @AsyncBoot

• @EnableThread

• @AsyncProcess

• @EnableAsync

What is the purpose of the @Service annotation in Spring Boot?

• To create a new thread pool.

• To indicate that a class is a service for dependency injection.

• To enable asynchronous processing.

• To mark a class as a controller.

How does Spring Boot handle the result of an asynchronous operation?

• Using a Future object.

• Using a CompletableFuture object.

• Using a Thread object.

• Using a Result object.

What is the role of dependency injection in Spring Boot?

• To create new instances of classes for each request.

• To manage the lifecycle of beans and inject dependencies.

• To handle asynchronous operations.

• To configure the web server.

In the Visual VM demonstration, what indicates that tasks are being handled asynchronously?

• Tomcat threads are blocked.

• New threads named task1, task2, etc., are created.

• The response time increases significantly.

• The application crashes.

What is the default behavior of Spring Boot regarding thread pools for asynchronous operations?

• It automatically assigns a default thread pool.

• It does not support asynchronous operations.

• It uses a single thread for all operations.

• It requires manual configuration of thread pools.

How can you customize the thread pool used for asynchronous operations in Spring Boot?

• By disabling the default thread pool.

• By creating a custom task executor method.

• By using a different web server.

• By modifying the Tomcat configuration.

What is the significance of the @Bean annotation in Spring Boot?

• It configures the web server.

• It enables asynchronous processing.

• It indicates a method that returns a bean for dependency injection.

• It marks a class as a controller.

What is the main architectural approach for building scalable web applications in Spring Boot?

• Using Tomcat threads for all operations.

• Using REST controllers to handle all business logic.

• Delegating work to downstream services and using asynchronous processing.

• Handling all requests synchronously.