TL;DR

• Fastify is a fast and low overhead web framework for Node.js.
• This package shows how fast it is compared to other JS frameworks: these benchmarks do not pretend to represent a real-world scenario, but they give a good indication of the framework overhead.
• The benchmarks are run automatically on GitHub actions, which means they run on virtual hardware that can suffer from the "noisy neighbor" effect; this means that the results can vary.
• For metrics (cold-start) see metrics.md

Requirements

To be included in this list, the framework should captivate users' interest. We have identified the following minimal requirements:

• Ensure active usage: a minimum of 500 downloads per week
• Maintain an active repository with at least one event (comment, issue, PR) in the last month
• The framework must use the Node.js HTTP module

Usage

Clone this repo. Then

node ./benchmark [arguments (optional)]

Arguments

• -h: Help on how to use the tool.
• bench: Benchmark one or more modules.
• compare: Get comparative data for your benchmarks.

Create benchmark before comparing; benchmark bench

You may also compare all test results, at once, in a single table; benchmark compare -t

You can also extend the comparison table with percentage values based on fastest result; benchmark compare -p

Scenarios

• get (default): GET / responding with { hello: 'world' }. Servers live in benchmarks/.
• post: POST / with a {"hello":"world"} JSON body, parsed and echoed back. Servers live in benchmarks/post/.

Pass the scenario as the fifth argument when benchmarking non-interactively, and with -s when comparing:

node ./benchmark bench y 100 10 40 post
node ./benchmark compare -t -s post

Benchmarks

• Machine: linux x64 | 4 vCPUs | 15.6GB Mem
• Node: v24.22.0
• Run: Mon Oct 19 2026 13:23:30 GMT+0000 (Coordinated Universal Time)
• Method: autocannon -c 100 -d 40 -p 10 localhost:3000 (two rounds; one to warm-up, one to measure)

	Version	Router	Requests/s	Latency (ms)	Throughput/Mb
restana	6.1.0	✓	96993.6	9.77	17.30
0http	5.2.0	✓	96574.4	9.84	17.22
connect	3.7.0	✗	91704.0	10.37	16.35
fastify	5.12.7	✓	91539.2	10.40	16.41
polka	0.5.2	✓	90246.4	10.60	16.09
node-http	v24.22.0	✗	89334.4	10.72	15.93
hono	4.13.13	✓	88776.0	10.82	14.56
connect-router	2.2.0	✓	87537.6	10.98	15.61
srvx	1.0.5	✗	87449.6	10.93	14.18
micro	10.0.1	✗	87236.8	10.98	15.56
elysia	1.4.30	✓	85731.2	11.17	14.06
h3	2.0.1-rc.32	✓	83566.4	11.48	14.66
adonisjs	9.3.1	✓	83457.6	11.46	14.88
whatwg-node-server	0.13.0	✗	77604.8	12.38	13.84
koa	3.2.1	✗	75523.2	12.77	13.47
koa-router	15.7.0	✓	72014.4	13.33	12.84
express	5.3.0	✓	68965.6	14.01	12.30
restify	12.0.0	✓	68917.2	14.00	12.42
hapi	21.4.10	✓	66615.6	14.51	11.88
express-with-middlewares	5.3.0	✓	58681.6	16.55	21.83
microrouter	3.1.3	✓	57912.0	16.77	10.33
fastify-big-json	5.12.7	✓	25688.0	38.42	295.55
trpc-router	11.19.0	✓	20753.6	47.68	4.73

POST Benchmarks

• Machine: linux x64 | 4 vCPUs | 15.6GB Mem
• Node: v24.22.0
• Run: Mon Oct 19 2026 13:23:31 GMT+0000 (Coordinated Universal Time)
• Method: autocannon -c 100 -d 40 -p 10 -m POST -H content-type=application/json -b '{"hello":"world"}' localhost:3000 (two rounds; one to warm-up, one to measure)

	Version	Router	Requests/s	Latency (ms)	Throughput/Mb
node-http	v24.22.0	✗	78409.6	12.27	13.98
fastify	5.12.7	✓	72691.2	13.27	13.03
hono	4.13.13	✓	62944.8	15.40	10.32
h3	2.0.1-rc.32	✓	53712.0	18.12	9.42
koa	3.2.1	✗	48265.6	20.22	8.61
express	5.3.0	✓	46004.8	21.25	8.20
restify	12.0.0	✓	35928.0	27.33	6.48
hapi	21.4.10	✓	35685.2	27.52	6.36