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: v20.19.0
• Run: Mon Apr 21 2025 02:00:12 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	v20.19.0	✗	47656.8	20.47	8.50
connect	3.7.0	✗	47131.2	20.72	8.41
fastify	5.3.2	✓	47032.0	20.76	8.43
polka	0.5.2	✓	46556.8	20.97	8.30
rayo	1.4.6	✓	46418.4	21.05	8.28
server-base-router	7.1.32	✓	45971.2	21.22	8.20
server-base	7.1.32	✗	45835.2	21.30	8.17
0http	4.2.0	✓	45431.2	21.53	8.10
polkadot	1.0.0	✗	44760.8	21.84	7.98
micro	10.0.1	✗	44487.2	21.99	7.93
h3-router	1.15.1	✓	43432.0	22.53	7.75
connect-router	2.2.0	✓	43256.0	22.60	7.71
h3	1.15.1	✗	42882.4	22.82	7.65
micro-route	2.5.0	✓	42166.4	23.23	7.52
adonisjs	7.6.0	✓	41501.6	23.61	7.40
hono	4.7.7	✓	41014.4	23.87	6.73
restana	v5.0.0	✓	40185.6	24.38	7.17
koa	2.16.1	✗	37044.0	26.49	6.61
koa-isomorphic-router	1.0.1	✓	35348.2	27.78	6.30
take-five	2.0.0	✓	35054.6	28.03	12.60
restify	11.1.0	✓	34753.8	28.26	6.26
koa-router	13.1.0	✓	33344.2	29.50	5.95
hapi	21.4.0	✓	31933.2	30.81	5.70
microrouter	3.1.3	✓	30896.0	31.86	5.51
fastify-big-json	5.3.2	✓	11978.6	82.92	137.81
express	5.1.0	✓	9920.0	100.22	1.77
express-with-middlewares	5.1.0	✓	9227.9	107.72	3.43
trpc-router	11.1.0	✓	6136.8	162.16	1.35