HTTP server & framework benchmarks

http4k benchmark results

http4k 6.59 is a kotlin web framework. At concurrency 64 it serves 67 204 requests per second with a P50 latency of 0.62 ms, ranking 206 of 383 overall and 6 of 7 among kotlin frameworks.

Language: kotlin 2.4
Framework version: 6.59
Website: https://http4k.org
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Throughput, latency & reliability

All measured metrics for http4k 6.59, by concurrency level.
Metric	Concurrency 64	Concurrency 256	Concurrency 512
Requests / second	67 204	69 454	69 379
P50 latency	0.62 ms	2.88 ms	6.53 ms
P75 latency	1.26 ms	5.00 ms	9.79 ms
P90 latency	2.17 ms	7.57 ms	13.53 ms
P99 latency	5.03 ms	14.56 ms	23.19 ms
P99.999 latency	13.95 ms	28.75 ms	44.19 ms
Average latency	0.96 ms	3.69 ms	7.39 ms
Minimum latency	0.04 ms	0.05 ms	0.08 ms
Standard deviation	1.06 ms	3.06 ms	4.79 ms
Total requests	1 008 107	1 041 953	1 040 946
Bytes received	134.88 MB	139.43 MB	139.28 MB
HTTP errors	0	0	0
Request timeouts	0	0	0
Socket connection errors	0	0	0
Socket read errors	0	0	0
Socket write errors	0	0	0

Position in this benchmark

Position of http4k on requests per second.
Concurrency	Overall	Among kotlin frameworks
64	206 of 383	6 of 7
256	202 of 383	5 of 7
512	200 of 383	6 of 7

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Explore kotlin frameworks

Fastest kotlin frameworks at concurrency 64.
#	Framework	Requests / second	P50 latency	P99 latency
1	jooby 4.5	187 691	0.31 ms	0.65 ms
2	hexagon-netty-epoll 3.7	154 799	0.17 ms	5.60 ms
3	hexagon-netty 3.7	146 944	0.18 ms	5.81 ms
4	ktor 3.5	102 130	0.55 ms	2.46 ms
5	hexagon-jetty 3.7	68 364	0.79 ms	2.75 ms
7	spring 3.4	51 992	1.22 ms	4.55 ms

All 7 kotlin frameworks