C++11 Thread Pool vs Async: Which to Use?

What are the main differences between using a thread pool and async in C++11?

Thread pools manage a collection of threads for executing tasks, while async allows for non-blocking operations.

When should I prefer using a thread pool over async?

Use a thread pool when you have many short-lived tasks to execute concurrently, as it reduces overhead.

Are there any performance implications of using one over the other?

Yes, thread pools can improve performance for CPU-bound tasks, while async is better for I/O-bound tasks.

Can you give an example of when to use async?

Sure! Use async for tasks like reading files or making network requests where you want to avoid blocking.