HTTP/2's main feature is that it's multiplexed, which a client written in a suitably async-friendly language can exploit to pipeline parallel requests, or at le

HTTP/2's main feature is that it's multiplexed, which a client written in a suitably async-friendly language can exploit to pipeline parallel requests, or at least better reuse connections. There's presumably not too much performance gain (though header compression helps) if your client can't exploit the multiplexing.