Web performance tests using wrk

Results of concurrency level of 100, on Thinkpad X200, 8GB RAM, Ubuntu 14.04:

Language / Framework	Requests per Second	Latency (ms, Avg / Stdev / Max)	Transfer Rate
Golang / stdlib net/http	22136	82 / 133 / 1090	2.70 MB/s
Elixir / Plug + Cowboy	14793	11 / 14 / 164	2.78 MB/s
Elixir / Phoenix (Cowboy)	2961	32 / 12 / 104	0.71 MB/s
Ruby / Sinatra + Puma	1717	9 / 8 / 77	0.31 MB/s
Java / Spring Boot + Tomcat	11453	13 / 18 / 232	1.38 MB/s
Groovy / Spring Boot + Tomcat	10938	14 / 19 / 227	1.32 MB/s

Details

Results of concurrency level from 10 to 1000.

Data: latency, req/sec

Language / Framework	c2	c10	c20	c100	c1000
Go / stdlib	0.16, 21020	7, 21564	10, 21577	19, 21031	154, 20540
Elixir / Plug+Cowboy	0.22, 8853	1, 14685	2, 14658	12, 13946	48, 13136