Sharkbench

Benchmarking programming languages and web frameworks

Express: Bun vs Deno vs Node.js

Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. It has become the standard server framework for Node.js, offering powerful middleware capabilities for managing application routes. Express strikes a balance between simplicity and functionality for JavaScript backend development.

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: 2026-10-05

Comparison

Bun processes 2.87x requests per second compared to Deno, a 187.47% improvement.

MedianP99

Mode	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)
Bun	15693 (+104.60 %)	1.3 ms (-65.36 %)	4.93 % (-13.65 %)	52.1 MB (-38.59 %)	2.52 s (-29.21 %)
Node.js	7670	3.7 ms	18.58 %	84.8 MB	3.56 s
Deno	5459 (-28.83 %)	5.1 ms (+35.52 %)	20.90 % (+2.33 %)	109.5 MB (+29.08 %)	2.72 s (-23.53 %)

All results

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 v22) / Express v5	7670	3.7 ms	18.58 %	84.8 MB	3.56 s
JavaScript (Node.js v22) / Express v4	8219	3.6 ms	27.69 %	83.7 MB	4.28 s
JavaScript (Node.js v20) / Express v4	7913	3.7 ms	26.45 %	68.3 MB	3.69 s
JavaScript (Node.js v18) / Express v4	6051	4.8 ms	38.75 %	71.1 MB	4.43 s
JavaScript (Node.js v16) / Express v4	5537	5.1 ms	24.55 %	58.9 MB	4.86 s
JavaScript (Node.js v14) / Express v4	5940	4.8 ms	36.15 %	67.5 MB	4.04 s
JavaScript (Node.js v12) / Express v4	6159	4.6 ms	32.97 %	59.5 MB	4.22 s
JavaScript (Deno v2.1) / Express v5	5459	5.1 ms	20.90 %	109.5 MB	2.72 s
JavaScript (Bun v1) / Express v5	15693	1.3 ms	4.93 %	52.1 MB	2.52 s

Popular web frameworks

How does Express 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	26909	1.2 ms	74.55 %	5.7 MB	18.83 s
C# (.NET) / ASP.NET Core	17561	1.5 ms	22.99 %	46.6 MB	4.51 s
JavaScript (Bun) / Express	15693	1.3 ms	4.93 %	52.1 MB	2.52 s
JavaScript (Node.js) / Express	7670	3.7 ms	18.58 %	84.8 MB	3.56 s
JavaScript (Deno) / Express	5459	5.1 ms	20.90 %	109.5 MB	2.72 s
Java (Temurin) / Spring Boot (MVC)	3316	1.6 ms	1.83 %	244.5 MB	37.74 s
Go / Gin	1652	3.3 ms	3.59 %	13.5 MB	34.62 s
Python / FastAPI (Uvicorn)	800	30.8 ms	21.33 %	38.8 MB	7.28 s
Python / Flask (Gunicorn)	324	99.7 ms	56.19 %	95.1 MB	6.60 s
Python / Django (Gunicorn)	281	103.6 ms	57.04 %	133.1 MB	9.04 s
PHP / Laravel	91	384.1 ms	97.03 %	54.8 MB	95.24 s