Start server
./gradlew run
Run
ab -c 1 -n 200 localhost:8080/proxy
to warm up the app, all should be fine. Now run
ab -c 5 -n 200 localhost:8080/proxy
and a few, normally 4, requests failed. If u run
curl localhost:8080/i
u will see that all (400) requests has arrived at the "server".