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: Linux/DockerCPU: Ryzen 7 7800X3DLast Updated: 2025-05-04

Comparison

Bun processes 3.38x requests per second compared to Node.js, a 237.95% improvement.

Mode	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Bun	19486 (+237.95 %)	1.4 ms (-75.39 %)	10.11 % (-54.39 %)	50.7 MB (-38.47 %)
Deno	6088 (+5.58 %)	5.0 ms (-8.67 %)	54.97 % (-9.53 %)	130.7 MB (+58.48 %)
Node.js	5766	5.5 ms	64.50 %	82.5 MB

All results

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
JavaScript (Node.js v22) / Express v5	5766	5.5 ms	64.50 %	82.5 MB
JavaScript (Node.js v22) / Express v4	5619	5.6 ms	65.33 %	81.1 MB
JavaScript (Node.js v20) / Express v4	5535	5.7 ms	63.97 %	62.2 MB
JavaScript (Node.js v18) / Express v4	3839	7.7 ms	44.90 %	64.5 MB
JavaScript (Node.js v16) / Express v4	3485	8.3 ms	39.46 %	55.8 MB
JavaScript (Node.js v14) / Express v4	3741	8.0 ms	44.24 %	57.6 MB
JavaScript (Node.js v12) / Express v4	3819	7.7 ms	40.82 %	58.0 MB
JavaScript (Deno v2.1) / Express v5	6088	5.0 ms	54.97 %	130.7 MB
JavaScript (Bun v1) / Express v5	19486	1.4 ms	10.11 %	50.7 MB
JavaScript (Bun v1) / Express v4	18657	1.4 ms	8.40 %	52.4 MB

Popular web frameworks

How does Express compare to other popular frameworks?

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Rust / Axum	21030	1.6 ms	71.96 %	8.5 MB
JavaScript (Bun) / Express	19486	1.4 ms	10.11 %	50.7 MB
C# (.NET) / ASP.NET Core	14707	1.2 ms	2.64 %	136.5 MB
JavaScript (Deno) / Express	6088	5.0 ms	54.97 %	130.7 MB
JavaScript (Node.js) / Express	5766	5.5 ms	64.50 %	82.5 MB
Go / Gin	3546	1.0 ms	1.14 %	16.7 MB
Python / FastAPI (Uvicorn)	1185	21.0 ms	21.21 %	41.2 MB
Java (Temurin) / Spring Boot (MVC)	1105	1.7 ms	1.67 %	596.8 MB
Python / Flask (Gunicorn)	1092	7.7 ms	9.22 %	90.3 MB
Python / Django (Gunicorn)	950	8.8 ms	10.33 %	130.1 MB
PHP / Laravel	299	101.7 ms	56.47 %	84.2 MB