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 17 2025 01:55:28 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	✗	47916.0	20.36	8.55
connect	3.7.0	✗	46961.6	20.79	8.37
fastify	5.2.1	✓	46949.6	20.80	8.42
polka	0.5.2	✓	46751.2	20.88	8.34
rayo	1.4.6	✓	46432.8	21.03	8.28
polkadot	1.0.0	✗	46178.4	21.16	8.24
server-base	7.1.32	✗	45974.4	21.23	8.20
server-base-router	7.1.32	✓	45814.4	21.31	8.17
0http	4.2.0	✓	45524.0	21.48	8.12
micro	10.0.1	✗	45043.2	21.69	8.03
h3	1.15.1	✗	43981.6	22.23	7.84
connect-router	1.3.8	✓	42883.2	22.80	7.65
h3-router	1.15.1	✓	42882.4	22.82	7.65
micro-route	2.5.0	✓	42711.2	22.91	7.62
adonisjs	7.5.0	✓	42040.0	23.28	7.50
hono	4.7.4	✓	40176.0	24.37	6.59
restana	v5.0.0	✓	39890.4	24.58	7.11
koa	2.16.0	✗	36746.6	26.69	6.55
take-five	2.0.0	✓	35736.6	27.46	12.85
restify	11.1.0	✓	35421.8	27.75	6.38
koa-isomorphic-router	1.0.1	✓	34857.0	28.18	6.22
koa-router	13.1.0	✓	32836.6	29.94	5.86
hapi	21.4.0	✓	32366.0	30.40	5.77
microrouter	3.1.3	✓	30345.2	32.44	5.41
fastify-big-json	5.2.1	✓	11869.2	83.68	136.56
express	5.0.1	✓	10218.0	97.27	1.82
express-with-middlewares	5.0.1	✓	9055.6	109.81	3.37
trpc-router	10.45.2	✓	N/A	N/A	N/A