I am not good at English.
I use asynchronous methods.
Option 1
public CompletableFuture<Integer> getDiscountPriceAsync(Integer price) {
return CompletableFuture.supplyAsync(() -> {
log.info("supplyAsync");
return (int)(price * 0.9);
}, threadPoolTaskExecutor);
}
Option 2
@Async
public CompletableFuture<Integer> getDiscountPriceAsync(Integer price) {
return CompletableFuture.supplyAsync(() -> {
log.info("supplyAsync");
return (int)(price * 0.9);
}, threadPoolTaskExecutor);
}
I wonder what the difference is between using @Async and not using it.
I think the first Option1 provides enough asynchronous methods.
However, is it correct to use it like Option2?
Option 2 is asynchronous done twice.
If you annotated a method withe @Async it will be executed by Spring asynchronously. So you don't need to use the ThreadPoolExecutor by yourself.
Instead you could write:
@Async
public CompletableFuture<Integer> getDiscountPriceAsync(Integer price) {
log.info("supplyAsync");
return new AsyncResult<Integer>((int)(price * 0.9));
}
Read more about Async with Spring here: https://www.baeldung.com/spring-async
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.