HTTP server & framework benchmarks

amber benchmark results

amber 1.5 is a crystal web framework. At concurrency 64 it serves 132 163 requests per second with a P50 latency of 0.14 ms, ranking 113 of 383 overall and 8 of 12 among crystal frameworks.

Language: crystal 1.21
Framework version: 1.5
Website: https://amberframework.org
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Throughput, latency & reliability

All measured metrics for amber 1.5, by concurrency level.
Metric	Concurrency 64	Concurrency 256	Concurrency 512
Requests / second	132 163	132 401	117 360
P50 latency	0.14 ms	0.53 ms	1.69 ms
P75 latency	0.28 ms	2.36 ms	6.02 ms
P90 latency	1.04 ms	5.79 ms	12.77 ms
P99 latency	6.41 ms	14.58 ms	26.11 ms
P99.999 latency	17.15 ms	30.73 ms	45.72 ms
Average latency	0.48 ms	1.93 ms	4.37 ms
Minimum latency	0.02 ms	0.02 ms	0.02 ms
Standard deviation	1.20 ms	3.11 ms	5.92 ms
Total requests	1 982 529	1 986 262	1 760 834
Bytes received	229.42 MB	229.83 MB	203.72 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 amber on requests per second.
Concurrency	Overall	Among crystal frameworks
64	113 of 383	8 of 12
256	109 of 383	8 of 12
512	120 of 383	8 of 12

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Explore crystal frameworks

Fastest crystal frameworks at concurrency 64.
#	Framework	Requests / second	P50 latency	P99 latency
1	toro 0.5	163 514	0.14 ms	6.72 ms
2	spider-gazelle 8.2	162 561	0.14 ms	6.47 ms
3	router.cr 0.2	161 913	0.14 ms	6.80 ms
4	runcobo 2	157 140	0.14 ms	6.49 ms
5	grip 5	149 928	0.14 ms	7.48 ms
6	athena-routing 0.2	146 161	0.14 ms	7.37 ms
7	kemal 1.14	143 488	0.14 ms	7.23 ms
9	orion 3	124 845	0.14 ms	6.28 ms
10	marten 0.7	83 529	0.21 ms	8.31 ms
11	athena 0.21	74 187	0.34 ms	5.51 ms

All 12 crystal frameworks