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: v20.18.3
• Run: Mon Mar 03 2025 01:53:40 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	v20.18.3	✗	47292.8	20.66	8.43
connect	3.7.0	✗	47236.0	20.66	8.42
fastify	5.2.1	✓	47169.6	20.69	8.46
polka	0.5.2	✓	46867.2	20.82	8.36
server-base	7.1.32	✗	46503.2	21.00	8.29
server-base-router	7.1.32	✓	46372.8	21.05	8.27
rayo	1.4.6	✓	46209.6	21.13	8.24
polkadot	1.0.0	✗	45999.2	21.24	8.20
0http	4.2.0	✓	45824.8	21.33	8.17
micro	10.0.1	✗	45672.8	21.40	8.14
connect-router	1.3.8	✓	43564.0	22.44	7.77
adonisjs	7.5.0	✓	42745.6	22.89	7.62
micro-route	2.5.0	✓	42680.0	22.92	7.61
h3-router	1.15.1	✓	42102.4	23.26	7.51
h3	1.15.1	✗	41487.2	23.61	7.40
hono	4.7.2	✓	40604.8	24.11	6.66
restana	v5.0.0	✓	40044.8	24.48	7.14
koa	2.16.0	✗	37512.0	26.14	6.69
take-five	2.0.0	✓	35540.6	27.63	12.78
koa-isomorphic-router	1.0.1	✓	35132.2	27.96	6.27
restify	11.1.0	✓	34847.8	28.19	6.28
koa-router	13.1.0	✓	33003.4	29.80	5.89
hapi	21.3.12	✓	31439.6	31.30	5.61
microrouter	3.1.3	✓	30807.6	31.95	5.49
fastify-big-json	5.2.1	✓	11906.6	83.43	136.98
express	5.0.1	✓	10187.0	97.56	1.82
express-with-middlewares	5.0.1	✓	9023.9	110.17	3.36
trpc-router	10.45.2	✓	N/A	N/A	N/A