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

Benchmarks

• Machine: linux x64 | 4 vCPUs | 15.6GB Mem
• Node: v20.19.5
• Run: Sat Oct 04 2025 08:05:17 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
node-http	v20.19.5	✗	47288.8	20.64	8.43
fastify	5.6.1	✓	47000.8	20.76	8.43
0http	4.3.0	✓	46255.2	21.12	8.25
connect	3.7.0	✗	46254.6	21.11	8.25
polka	0.5.2	✓	46132.0	21.14	8.23
micro	10.0.1	✗	45313.6	21.56	8.08
h3	1.15.4	✗	44998.4	21.73	8.02
restana	v5.1.0	✓	44716.0	21.87	7.97
h3-router	1.15.4	✓	43818.4	22.32	7.81
connect-router	2.2.0	✓	43209.6	22.63	7.71
adonisjs	7.7.0	✓	42272.8	23.16	7.54
whatwg-node-server	0.10.12	✗	39126.4	25.08	6.98
hono	4.9.9	✓	37399.2	26.25	6.13
koa	3.0.1	✗	35473.8	27.71	6.33
restify	11.1.0	✓	34802.2	28.23	6.27
koa-router	14.0.0	✓	32405.6	30.36	5.78
hapi	21.4.3	✓	32251.2	30.50	5.75
microrouter	3.1.3	✓	30560.8	32.22	5.45
srvx	0.8.9	✗	20264.8	48.84	3.94
fastify-big-json	5.6.1	✓	11693.4	84.94	134.54
express	5.1.0	✓	10034.8	99.08	1.79
express-with-middlewares	5.1.0	✓	9104.9	109.18	3.39
trpc-router	11.6.0	✓	6379.6	156.00	1.41