java - 异步IO的优缺点

Question

异步IO就是将数据从内核空间拷贝到用户空间放在了内核中进行, 所以用户进程或线程就可以在这段时间做其他事情. 这是他的优点, 但是他的缺点是什么呢?

Answer 1

I think the shortcomings are:

1. Multi-threaded programming is required, the threshold is high, and it is easy to write low-quality code.

2. Synchronous serial programming is easier to understand than asynchronous callbacks.

3. The code of asynchronous IO is relatively complex and not intuitive enough.

Answer 2

Recommended to take a look at RxJava
Asynchronous programming, and you don’t have to deal with thread issues yourself
If combined with lambda expressions, the logic is clear and the code is simple