Answer by Jeroen Vannevel for Single instance of reusable HttpClient

You don't need multiple instances. In fact, HttpClient is designed specifically to persist and be used for multiple requests (see: HttpClient.DefaultRequestHeaders).

There's already a lot written about this so I'll redirect you to those resources:

• Do HttpClient and HttpClientHandler have to be disposed?

• Is HttpClient safe to use concurrently?

• What is the overhead of creating a new HttpClient per call in a WebAPI client?