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.
• compare: Get comparative data for your benchmarks.

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 Mar 24 2025 01:56:05 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
bare	v20.19.0	✗	47893.6	20.39	8.54
0http	4.2.0	✓	46811.2	20.87	8.35
fastify	5.2.1	✓	46303.2	21.09	8.30
connect	3.7.0	✗	45891.2	21.28	8.18
polka	0.5.2	✓	45428.8	21.52	8.10
server-base-router	7.1.32	✓	45293.6	21.57	8.08
server-base	7.1.32	✗	44983.2	21.74	8.02
rayo	1.4.6	✓	44164.0	22.15	7.88
micro	10.0.1	✗	43633.6	22.42	7.78
polkadot	1.0.0	✗	43386.4	22.56	7.74
connect-router	1.3.8	✓	43320.8	22.58	7.73
h3	1.15.1	✗	42842.4	22.84	7.64
micro-route	2.5.0	✓	42415.2	23.07	7.56
adonisjs	7.5.0	✓	42053.6	23.28	7.50
hono	4.7.5	✓	40933.6	23.91	6.71
h3-router	1.15.1	✓	40916.0	23.94	7.30
restana	v5.0.0	✓	37392.6	26.24	6.67
koa	2.16.0	✗	36922.6	26.59	6.58
take-five	2.0.0	✓	35735.0	27.47	12.85
koa-isomorphic-router	1.0.1	✓	34601.6	28.39	6.17
restify	11.1.0	✓	33977.4	28.93	6.12
koa-router	13.1.0	✓	33313.2	29.51	5.94
hapi	21.4.0	✓	32294.2	30.46	5.76
microrouter	3.1.3	✓	29519.6	33.37	5.26
fastify-big-json	5.2.1	✓	11884.0	83.60	136.74
express	5.0.1	✓	10156.6	97.85	1.81
express-with-middlewares	5.0.1	✓	9077.6	109.53	3.38
trpc-router	10.45.2	✓	N/A	N/A	N/A