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: Mon Apr 28 2025 01:59:47 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
fastify	5.3.2	✓	45588.8	21.43	8.17
node-http	v20.19.1	✗	45346.4	21.56	8.09
polka	0.5.2	✓	44972.8	21.73	8.02
connect	3.7.0	✗	44689.8	21.88	7.97
server-base	7.1.32	✗	44609.6	21.93	7.96
rayo	1.4.6	✓	43824.0	22.32	7.82
micro	10.0.1	✗	43739.8	22.36	7.80
polkadot	1.0.0	✗	43674.4	22.40	7.79
0http	4.2.0	✓	43520.0	22.48	7.76
server-base-router	7.1.32	✓	42789.6	22.87	7.63
connect-router	2.2.0	✓	42456.0	23.06	7.57
h3	1.15.2	✗	42276.8	23.16	7.54
h3-router	1.15.2	✓	42132.8	23.24	7.51
micro-route	2.5.0	✓	41460.8	23.63	7.39
adonisjs	7.6.0	✓	41061.6	23.85	7.32
hono	4.7.7	✓	39284.0	24.96	6.44
restana	v5.0.0	✓	38144.6	25.71	6.80
koa	2.16.1	✗	35927.0	27.33	6.41
take-five	2.0.0	✓	34937.4	28.13	12.56
restify	11.1.0	✓	33996.0	28.91	6.13
koa-isomorphic-router	1.0.1	✓	33878.4	29.02	6.04
koa-router	13.1.0	✓	32574.8	30.20	5.81
hapi	21.4.0	✓	30826.4	31.93	5.50
microrouter	3.1.3	✓	29452.8	33.44	5.25
fastify-big-json	5.3.2	✓	11640.2	85.37	133.92
express	5.1.0	✓	9793.0	101.51	1.75
express-with-middlewares	5.1.0	✓	8912.3	111.57	3.31
trpc-router	11.1.1	✓	5930.5	167.80	1.31