How to make Aysnc annotation work in Spring Boot?

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I created a simple spring boot application with scheduled (@Scheduled) task. In that scheduled task, I would like to call async function with @Async, but I can see it still runs on the scheduling thread without switch to another thread. I also tried to customise executor, but no luck. Here are some codes. I also already enable async in main class

    public class scheduledService {
    @Scheduled(fixedRateString = "${config.scheduleInterval}")
    public void pollDataWithFixSchedule() {
        AsyncService service = new AsyncService();
    public class AsyncService {
    public void asyncCall(){
       System.out.printly("Current thread -- {}",Thread.currentThread().getName()))
    @Bean(name = "MyThreadPoolExecutor")
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        return executor;
public class ScheduledApplication {

    public static void main(String[] args) {
        SpringApplication application = new SpringApplication(ScheduledApplication.class);

Getting Started, Learn to use spring async behavior with @EnableAsync annotation. By Sudip Roy Chowdhury | Filed Under: Spring Boot REST. Learn to create asynchronous controller methods in Spring framework with the help of Methods which shall run asynchronously, annotate them with @Async annotation and method return  In this article, we’ll explore the asynchronous execution support in Spring or Spring Boot using Spring's @Async annotation.. We will annotate a bean method; @Async will make it execute in a

you need to autowire AsyncService, do not create new object like

AsyncService service = new AsyncService();

Also, annotate your scheduledService class with @Service or @Component

public class scheduledService {
    private AsyncService service ;

    @Scheduled(fixedRateString = "${config.scheduleInterval}")
    public void pollDataWithFixSchedule() {


How To Do @Async in Spring, Follow these steps to get @Async to work in your Spring Boot application: Step 1: Add @EnableAsync annotation and Add TaskExecutor Bean to Application  Simply put – annotating a method of a bean with @Async will make it execute in a separate thread i.e. the caller will not wait for the completion of the called method. One interesting aspect in Spring is that the event support in the framework also has support for async processing if you want to go that route.

不要在同一个类中调用异步方法 Do not call asynchronous methods in the same class. 将异步任务单独放到一个类 并且在这个类上加上@Component Put asynchronous tasks into a single class and add @ component to this class

Spring @Async Annotation for Asynchronous Processing, Then we can configure a thread pool in which the asynchronous jobs will be executed. Now, we annotate the method with @Async annotation. Spring @Async annotation allows us to create asynchronous methods in spring. Let’s explore @Async in this tutorial on spring framework. For a brief, when we annotate a method of a bean @Async annotation, Spring will execute it in a separate thread and the caller of the method will not wait till the method is completed execution.

Use @EnableAsync on the top of class where you are creating async bean, not on the ScheduledApplication.

Spring @Async rest controller example, When you put an @Async annotation on a method underlying it, the job to the TaskExecutor thread pool, it has a few limitations that have to know. maven project with @Async annotation, not use Spring boot, we can use  Spring comes with @EnableAsync annotation and can be applied on application classes for asynchronous behavior. This annotation will look for methods marked with @Async annotation and run in background thread pools. The @Async annotated methods can return CompletableFuture to hold the result of an asynchronous computation.

Spring Boot @Async method in controller is executing , How to Make Parallel Calls in Java Spring Boot Application and How to Test Them? Let's start with the requirements to implement asynchronous calls. You have an application that works but let's suppose that the call to get all 01- Add @Async annotation to the function you want to parallelize  When you put an Async annotation on a method underlying it, it creates a proxy of that object where Asyncis defined (JDK Proxy/CGlib) based on the proxyTargetClassproperty. Then, Spring tries to

@Async usage in Spring Boot - guraycintir, However, just using the @Async annotation is not enough. We need to enable Spring’s asynchronous method execution capability by using the @EnableAsync annotation in one of our configuration classes.

How to use @Async annotation in Spring, The @EnableAsync annotation switches on Spring’s ability to run @Async methods in a background thread pool. This class also customizes the Executor by defining a new bean. Here, the method is named taskExecutor, since this is the specific method name for which Spring searches. In our case, we want to limit the number of concurrent threads to two and limit the size of the queue to 500.

  • @Async is implemented using AOP. By default that is proxy based, with proxy based AOP internal method calls aren't intercepted. No interception, no async. Either do a self injection and call the method that way, put @Async on the @Scheduled method or put the asyncCall method in another class (or the @Scheduled either will work).
  • Hi @M.Deinum , thanks for your answer. I create a new class including public function with Async annotation, then I new the instance in that scheduled function and call multiple times, but it doesn’t work neither. Your solution adding async to schedule function, that works but that’s not expected. Could you please advise whether I missing something
  • I update my code above. Please have a look. Thanks!
  • Ofcourse that won't work. You are creating an instance yourself, whereas Spring should be controlling the bean and you should inject it into the class.
  • Thanks a lot! Got it.
  • This is the correct answer! You cannot call async methods from within the same class because proxying won't work
  • Hi @QBrute, I update my code as per suggestion, but it doesn't work neither. Could you please check my update and help point out the issue. Thank you.