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feat: add POST benchmark scenario - #489
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Add a `post` scenario that sends `POST /` with a `{"hello":"world"}`
JSON body which each server parses and echoes back. POST servers live
in benchmarks/post/ for fastify, hono, h3, koa, express, restify, hapi
and node-http.
Run it with `npm start y 100 10 40 post` and compare with
`benchmark compare -s post`. Results are written to
benchmark-results-post.json and a `# POST Benchmarks` README section;
the GET scenario's output is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Benchmark new Fastify releases as soon as they are published. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Tony133
requested changes
Oct 18, 2026
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Happy to announce the results of my recent performance work! It was focused mostly on cases where there is a request body. Therefore a new
simple POSTbenchmark was added.On POST, Fastify 5.10.0 was 5% slower than Hono, and 5.12.7 is 24% faster. It's pretty significant considering we're now faster than everybody else despite doing more work by default, such as protecting against prototype poisoning
I will update the website after this merges so it shows both the simple get and simple post results
More results between Fastify and Hono:
Fastify 5.12.7 vs Hono 4.13.13**: 3 rounds,
autocannon -c 100 -d 40 -p 10, Node v24.21.0, darwin arm64 (15 cores). Order alternated each round.Fastify served 18.4% more requests per second on average (+15.5% to +20.7% per round) with 16.2% lower average latency, while rejecting prototype-poisoning payloads by default.