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: v24.22.2
• Run: Sun Nov 01 2026 04:31:09 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	✓	93484.8	10.17	16.67
connect	3.7.0	✗	92668.8	10.29	16.53
fastify	5.12.7	✓	92340.8	10.35	16.56
0http	5.2.0	✓	92326.4	10.34	16.47
node-http	v24.22.2	✗	90390.4	10.59	16.12
hono	4.13.13	✓	88576.0	10.80	14.53
polka	0.5.2	✓	87518.4	10.94	15.61
srvx	1.0.7	✗	86616.0	11.10	14.04
h3	2.0.1-rc.32	✓	85257.6	11.25	14.96
adonisjs	9.3.1	✓	84838.4	11.32	15.13
elysia	1.4.30	✓	84835.2	11.30	13.92
micro	10.0.1	✗	84489.6	11.33	15.07
connect-router	2.2.0	✓	76030.4	12.63	13.56
koa	3.2.1	✗	73616.0	13.07	13.13
restify	12.1.0	✓	70711.6	13.64	12.74
express	5.3.0	✓	70300.8	13.71	12.54
whatwg-node-server	0.13.1	✗	69353.6	13.92	12.37
koa-router	15.7.0	✓	69148.8	13.96	12.33
hapi	21.4.11	✓	66674.4	14.50	11.89
microrouter	3.1.3	✓	64130.4	15.07	11.44
express-with-middlewares	5.3.0	✓	60306.4	16.13	22.43
fastify-big-json	5.12.7	✓	27514.4	35.83	316.59
trpc-router	11.19.0	✓	20152.0	49.10	4.59

POST Benchmarks

• Machine: linux x64 | 4 vCPUs | 15.6GB Mem
• Node: v24.22.2
• Run: Sun Nov 01 2026 04:31:09 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	v24.22.2	✗	74420.8	12.95	13.27
fastify	5.12.7	✓	63216.4	15.32	11.33
hono	4.13.13	✓	56004.8	17.36	9.19
h3	2.0.1-rc.32	✓	51154.4	19.03	8.98
koa	3.2.1	✗	47126.4	20.71	8.40
restify	12.1.0	✓	44917.6	21.76	8.10
express	5.3.0	✓	41194.4	23.78	7.35
hapi	21.4.11	✓	27513.2	35.85	4.91