Until you get some decent amount of load on the system. Then the background thread will still make progress. And the UDP/Proxy approach will only have failing r

Until you get some decent amount of load on the system. Then the background thread will still make progress. And the UDP/Proxy approach will only have failing requests, because the loss of any single UDP packet will make the request fail (there are no retries). I can only see being interesting if you have a workload which requires sending small requests that fit into one or a couple of datagrams.