What are the benefits of using Rust async HTTP clients?

Question

Generally it seems like async only has a real benefit when there are many connections.Is there a scenario where using an HTTP client implemented with Rust's async features gives a substantive performance benefit?

halffullbrain · Accepted Answer

That's correct. With many concurrent connections, you save memory (from thread stacks) and context swiches (since you don't need to switch thread to process each socket).If all you want is a single request (and you have wait for results to continue work), you don't gain anything by going async.

What are the benefits of using Rust async HTTP clients?

Generally it seems like async only has a real benefit when there are many connections.
Is there a scenario where using an HTTP client implemented with Rust's async features gives a substantive performance benefit?

That's correct. With many concurrent connections, you save memory (from thread stacks) and context swiches (since you don't need to switch thread to process each socket).
If all you want is a single request (and you have wait for results to continue work), you don't gain anything by going async.