Sharkbench

Benchmarking programming languages and web frameworks

Fastify (JavaScript)

Fastify is a high-performance Node.js web framework focused on providing low latency and high throughput by leveraging Node.js features and asynchronous I/O. It is known for its extensible plugin architecture and efficient handling of JSON-based data. Fastify offers a modern alternative to Express with better performance characteristics.

This benchmark tests how fast a framework can perform concurrent HTTP requests, I/O operations, and JSON de/serialization.

OS: LinuxCPU: Intel Core Ultra 5 325Last Updated: 2026-10-14

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
JavaScript (Node.js v24) / Fastify v4	14334	1.8 ms	9.94 %	231.3 MB	6.81 s
JavaScript (Node.js v22) / Fastify v4	14257	2.1 ms	34.01 %	127.1 MB	5.72 s
JavaScript (Node.js v20) / Fastify v4	13720	2.2 ms	33.23 %	107.0 MB	5.49 s
JavaScript (Node.js v18) / Fastify v4	9003	3.4 ms	45.59 %	106.2 MB	5.20 s
JavaScript (Node.js v16) / Fastify v4	7932	3.6 ms	33.87 %	92.2 MB	4.96 s
JavaScript (Bun v1) / Fastify v4	19129	1.0 ms	3.97 %	76.6 MB	3.83 s

Comparisons

Bun vs Node.js

About JavaScript

Paradigm

Object-Oriented, Imperative, Functional

Execution

Interpreted

Typing

Dynamic

Null Safety

NO

Memory Management

Garbage Collection

JavaScript is a high-level, dynamic programming language that conforms to the ECMAScript specification and has become a core technology of the World Wide Web. It enables interactive web elements and is supported by all major browsers without plugins. JavaScript can also be used on the server-side through Node.js for developing network applications.

JavaScript web frameworks

How does Fastify compare to other JavaScript frameworks?

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
JavaScript (Node.js) / Fulmine.js	22467	1.4 ms	41.61 %	174.9 MB	41.54 s
JavaScript (Bun) / Bun.serve STD Part of the standard library	19809	1.0 ms	3.73 %	52.4 MB	1.12 s
JavaScript (Bun) / Fastify	19129	1.0 ms	3.97 %	76.6 MB	3.83 s
JavaScript (Bun) / Koa	19071	1.0 ms	3.22 %	75.7 MB	3.09 s
JavaScript (Bun) / Express	17685	1.1 ms	4.09 %	75.7 MB	3.80 s
JavaScript (Node.js) / Nest (Fastify)	16851	1.8 ms	32.08 %	254.2 MB	27.31 s
JavaScript (Node.js) / Express	15270	2.0 ms	29.45 %	228.4 MB	4.92 s
JavaScript (Node.js) / Fastify	14334	1.8 ms	9.94 %	231.3 MB	6.81 s
JavaScript (Node.js) / Nest (Express)	14196	2.1 ms	32.81 %	249.4 MB	23.63 s
JavaScript (Node.js) / Koa	12739	2.4 ms	34.10 %	101.8 MB	4.73 s
JavaScript (Deno) / Koa	5593	4.6 ms	16.16 %	153.1 MB	3.72 s
JavaScript (Deno) / Express	4976	5.1 ms	17.99 %	150.6 MB	3.87 s

Popular web frameworks

How does Fastify compare to other popular frameworks?

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
Rust / Axum	26670	1.2 ms	74.13 %	16.5 MB	26.69 s
JavaScript (Bun) / Fastify	19129	1.0 ms	3.97 %	76.6 MB	3.83 s
C# (.NET) / ASP.NET Core	17041	1.5 ms	23.04 %	101.8 MB	6.09 s
JavaScript (Node.js) / Express	15270	2.0 ms	29.45 %	228.4 MB	4.92 s
JavaScript (Node.js) / Fastify	14334	1.8 ms	9.94 %	231.3 MB	6.81 s
Java (Temurin) / Spring Boot (MVC)	2962	1.6 ms	1.86 %	286.4 MB	37.73 s
Go / Gin	1640	3.4 ms	3.65 %	23.1 MB	32.20 s
Python / FastAPI (Uvicorn)	792	32.9 ms	20.81 %	63.3 MB	8.55 s
Python / Flask (Gunicorn)	320	99.9 ms	56.36 %	110.2 MB	8.94 s
Python / Django (Gunicorn)	279	103.8 ms	57.16 %	151.9 MB	10.29 s
PHP / Laravel	92	319.0 ms	80.90 %	80.4 MB	95.22 s