Ratpack "Hello World" on a t2.micro, Ubuntu 14.04, no extra server configuration.
~30,000 req/s
# ./wrk -t4 -c72 -d60s -R35000 http://localhost:5050
Running 1m test @ http://localhost:5050
4 threads and 72 connections
Thread calibration: mean lat.: 823.764ms, rate sampling interval: 3041ms
Thread calibration: mean lat.: 800.518ms, rate sampling interval: 2902ms
Thread calibration: mean lat.: 800.900ms, rate sampling interval: 2902ms
Thread calibration: mean lat.: 787.521ms, rate sampling interval: 2805ms
Thread Stats Avg Stdev Max +/- Stdev
Latency 5.41s 2.32s 10.53s 64.38%
Req/Sec 7.43k 63.49 7.58k 62.69%
1777389 requests in 1.00m, 152.55MB read
Requests/sec: 29623.25
Transfer/sec: 2.54MB