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

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

Thread pools manage a collection of threads for executing tasks, while async allows for non-blocking operations. Thread pools are great for managing multiple tasks efficiently, while async is better for I/O-bound tasks.

When should I prefer using a thread pool over async?

You should prefer a thread pool when you have CPU-bound tasks that require parallel execution. It helps in reusing threads and managing resources effectively.

Can you give an example of when async would be more beneficial?

Async is beneficial in scenarios like network calls or file I/O, where you want to avoid blocking the main thread and improve responsiveness.

Are there any performance considerations I should be aware of?

Yes, thread pools can lead to better CPU utilization, while async can reduce latency in I/O operations. However, excessive context switching in thread pools can degrade performance.