You want to customize the thread pool used by @Async methods. Which of the following is the correct way to do this?

hard📝 Application Q8 of 15

Spring Boot - Async Processing

You want to customize the thread pool used by @Async methods. Which of the following is the correct way to do this?

ADefine a bean of type Executor and override getAsyncExecutor() in AsyncConfigurer.

BAdd @Async("customExecutor") on methods without any bean definition.

CUse @EnableAsync with a threadPoolSize attribute.

DConfigure thread pool in application.properties only.

Step-by-Step Solution

Solution:

Step 1: Understand async executor customization
Implement AsyncConfigurer and override getAsyncExecutor() to provide custom Executor bean.
Step 2: Evaluate other options
@Async("customExecutor") requires a bean named customExecutor; no threadPoolSize attribute exists on @EnableAsync; properties alone are insufficient.
Final Answer:
Define a bean of type Executor and override getAsyncExecutor() in AsyncConfigurer. -> Option A
Quick Check:
Custom executor via AsyncConfigurer bean override [OK]

Quick Trick: Override getAsyncExecutor() to customize thread pool [OK]

Common Mistakes:

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