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: v20.19.1
• Run: Thu May 15 2025 14:40:35 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	v20.19.1	✗	46288.8	21.10	8.25
polka	0.5.2	✓	45348.8	21.56	8.09
server-base	7.1.32	✗	45302.4	21.58	8.08
fastify	5.3.3	✓	45032.8	21.71	8.07
rayo	1.4.6	✓	44761.6	21.84	7.98
micro	10.0.1	✗	44696.0	21.87	7.97
server-base-router	7.1.32	✓	44418.4	22.01	7.92
connect	3.7.0	✗	44334.4	22.06	7.91
polkadot	1.0.0	✗	44254.4	22.10	7.89
0http	4.2.0	✓	43351.2	22.56	7.73
micro-route	2.5.0	✓	41587.2	23.55	7.42
adonisjs	7.6.1	✓	41103.2	23.83	7.33
connect-router	2.2.0	✓	40783.2	24.02	7.27
h3	1.15.3	✗	39900.8	24.56	7.12
h3-router	1.15.3	✓	39321.6	24.93	7.01
srvx	0.7.1	✗	39215.2	25.00	7.63
restana	v5.0.0	✓	38776.8	25.29	6.92
hono	4.7.9	✓	38170.4	25.69	6.26
koa	2.16.1	✗	35493.0	27.67	6.33
take-five	2.0.0	✓	34408.0	28.56	12.37
restify	11.1.0	✓	34222.2	28.72	6.17
koa-isomorphic-router	1.0.1	✓	33825.0	29.06	6.03
koa-router	13.1.0	✓	31722.4	31.02	5.66
hapi	21.4.0	✓	30016.8	32.81	5.35
microrouter	3.1.3	✓	29261.6	33.66	5.22
whatwg-node-server	0.10.6	✗	29026.0	33.95	5.18
fastify-big-json	5.3.3	✓	11466.0	86.64	131.92
express	5.1.0	✓	9658.0	102.94	1.72
express-with-middlewares	5.1.0	✓	8649.9	114.99	3.22
trpc-router	11.1.2	✓	6009.0	165.65	1.32