Issue with Spring Boot Async method

Question

I have a asynchronous method enabled using @Async annotation. At times i am seeing SimpleAsyncTaskExecutor thread count increases exponentially. Any idea on this behavior?

Answer 1

如果它从字面上按指数级增长，这听起来像是异步方法正在调用自身？

Answer 2

By default, Spring uses a SimpleAsyncTaskExecutor to run the methods asynchronously. SimpleAsyncTaskExecutor spawns a new thread with each task and does not support thread pooling and queueing of tasks. So, if the async method is called multiple times in a short span of time, multiple threads will be opened for each task You should define your own executor. Refer the following link http://www.baeldung.com/spring-async