Demo source code of two Web API to demonstrate performance of using async with IO-bound and CPU-bound operations
Using async/await makes it approximately ten times better!
Synchronous CPU-bound
Asynchronous CPU-bound
Using async/await makes it worse in this case!
- Use async with IO-bound operations whenever possible
- Don’t block!
- Don’t use async for expensive CPU-bound operations
- Use benchmarking tools such as Bombardier (https://github.com/codesenberg/bombardier)
I still need more performance, what can I do?
- Scale up
- Scale out whole application using Docker/Kubernetes
- Scale out only expensive CPU-bound operations to Azure Functions