java - What are impact to my spring boot application if I have task executor

Question

I already have the configuration to config for min and max threads for my spring boot application

server.tomcat.threads.min=20
server.tomcat.threads.max=50

What are impact to my spring boot application if I have task executor in my application?

@Configuration
public class AsyncConfiguration {

@Bean("myExecutor")
public TaskExecutor getAsyncExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(20);
    executor.setMaxPoolSize(1000);
    executor.setWaitForTasksToCompleteOnShutdown(true);
    executor.setThreadNamePrefix("Async-");
    return executor;
} }

Answer 1

Those are two different thread pools:

• server.tomcat.threads.* defines the request thread pool (knowing that the Servlet API uses one thread per request)

• myExecutor is just another pool that you could use for async operations, for instance via @EnableAsync/@Async:

By default, Spring will be searching for an associated thread pool definition: either a unique TaskExecutor bean in the context, or an Executor bean named "taskExecutor" otherwise. If neither of the two is resolvable, a SimpleAsyncTaskExecutor will be used to process async method invocations.

See also https://stackoverflow.com/a/65185737/1225328 for more details about using thread pools with Spring MVC/WebFlux.

So, to answer your actual question: both configurations don't interfere with each other :)