Java Architect Essentials

Mar 14, 2023 · Backend Development

Using @Async in Spring: Built‑in Thread Pools, Their Limitations, and Custom Thread‑Pool Configuration

The article explains how Spring's @Async annotation works, compares synchronous and asynchronous calls, reviews the built‑in executors such as SimpleAsyncTaskExecutor, discusses their drawbacks, and provides detailed guidance on creating custom thread pools via AsyncConfigurer, AsyncConfigurerSupport, or a TaskExecutor bean, including code examples.