Spring Async Executor Setting

You can use SpringTaskExecutor to execute your method as asynchronous.

You can just set the taskExecutor as bean, and @EnableAsync for this.

package org.blog.test.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

@Configuration
@EnableAsync
public class AsyncConfig {

    @Bean
    public ThreadPoolTaskExecutor asyncTaskExecutor() {
        return new ThreadPoolTaskExecutor() {{
            setCorePoolSize(5);
            setMaxPoolSize(20);
            setQueueCapacity(200);
            setThreadNamePrefix("AsyncExecutor_");
        }};
    }
}

And then, you can just add @Async to your method that you want to set as async.
If you set @Async to class, all the method in the class will be executed as async.
If you set @Async to the method, only that method will be executed as async.

package org.blog.test.service.impl;

import lombok.extern.slf4j.Slf4j;
import org.blog.test.service.AsyncService;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

@Async
@Slf4j
@Service
public class AsyncServiceImpl implements AsyncService {

    @Override
    public void doAsync() {
        log.info("async method");
    }
}

- execution result

2017-06-19 23:02:44.626  INFO 8336 --- [AsyncExecutor_1] o.b.test.service.impl.AsyncServiceImpl   : async method

You can download all the example as below link.

https://gitlab.com/shashaka/async-executor-project