Method

Everything is benchmarked using wrk (4.0.2).
Code is formatted using formatting tools default configurations (prettier, rustfmt, gofmt ...).
LoCs are reported by tokei, blank lines and comments are ignored.

Hello world

Best out of 5, bench command:
wrk -t12 -c400 -d10s http://localhost:8080/hello/noob

[Laptop] Results for Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz (8 cores):

Language	Platform/Toolchain	Framework	LoC	Requests/sec	Transfer/sec	Perf.
Rust	rustc 1.33.0	Warp	5	328,201	40.06MB	100%
Rust	rustc 1.33.0	Actix	10	299,213	36.53MB	91.2%
Go	Go 1.12	-	14	193,198	23.77MB	58.9%
Haskell	GHC 8.6.3	Scotty	6	139,532	22.75MB	42.5%
JavaScript	Node 11.10.1 (PM2)	Express	7	44,327	9.09MB	13.5%
JavaScript	Node 11.10.1 (PM2)	Koa	9	40,770	5.91MB	12.4%
JavaScript	Node 11.10.1	Koa	9	29,476	4.27M	9.0%
JavaScript	Node 11.10.1	Express	7	20,445	4.19MB	6.2%

[Desktop] Results for Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz (4 cores):

Language	Platform/Toolchain	Framework	LoC	Requests/sec	Transfer/sec	Perf.
Rust	rustc 1.33.0	Warp	5	298,769	36.47MB	100%
Rust	rustc 1.33.0	Actix	10	287,908	35.15MB	96.3%
Haskell	GHC 8.6.3	Scotty	6	112,167	18.29MB	37.3%
JavaScript	Node 11.10.1 (PM2)	Koa	9	82,880	12.01MB	27.7%
JavaScript	Node 11.10.1 (PM2)	Express	7	56,349	11.55MB	18.9%
JavaScript	Node 11.10.1	Koa	9	30,016	4.35M	10.0%
JavaScript	Node 11.10.1	Express	7	17,756	3.64MB	5.9%

Best out of 5, bench command:
wrk -t12 -c400 -d10s http://localhost:8080/users/2

[Laptop] Results for Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz (8 cores):

Language	Platform/Toolchain	Framework	LoC	Requests/sec	Transfer/sec	Perf.
Rust	rustc 1.33.0	Warp	30	338,968	44.89MB	100%
Rust	rustc 1.33.0	Actix	39	321,699	45.41MB	94.9%
Go	Go 1.12	-	51	194,672	27.48MB	57.4%
Haskell	GHC 8.6.3	Scotty	22	102,412	19.14MB	30.2%
JavaScript	Node 11.10.1 (PM2)	Express	21	42,815	9.92MB	12.6%
JavaScript	Node 11.10.1 (PM2)	Koa	23	40,662	6.67MB	12.0%
JavaScript	Node 11.10.1	Koa	23	28,068	4.60M	8.3%
JavaScript	Node 11.10.1	Express	21	18,386	4.26MB	5.4%