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: 2026-10-14

Comparison

Bun processes 3.55x requests per second compared to Deno, a 255.41% 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	17685 (+15.82 %)	1.1 ms (-45.17 %)	4.09 % (-25.36 %)	75.7 MB (-66.84 %)	3.80 s (-22.75 %)
Node.js	15270	2.0 ms	29.45 %	228.4 MB	4.92 s
Deno	4976 (-67.41 %)	5.1 ms (+159.68 %)	17.99 % (-11.46 %)	150.6 MB (-34.06 %)	3.87 s (-21.31 %)

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 v24) / Express v5	15270	2.0 ms	29.45 %	228.4 MB	4.92 s
JavaScript (Node.js v24) / Express v4	11889	2.1 ms	10.32 %	230.8 MB	5.08 s
JavaScript (Node.js v22) / Express v5	7315	3.9 ms	17.97 %	123.8 MB	4.89 s
JavaScript (Node.js v22) / Express v4	8205	3.6 ms	25.94 %	145.6 MB	5.21 s
JavaScript (Node.js v20) / Express v4	7848	3.7 ms	24.26 %	110.4 MB	4.66 s
JavaScript (Node.js v18) / Express v4	5996	4.8 ms	36.05 %	115.7 MB	5.41 s
JavaScript (Node.js v16) / Express v4	5452	5.2 ms	23.94 %	71.8 MB	4.72 s
JavaScript (Deno v2.1) / Express v5	4976	5.1 ms	17.99 %	150.6 MB	3.87 s
JavaScript (Bun v1) / Express v5	17685	1.1 ms	4.09 %	75.7 MB	3.80 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	26670	1.2 ms	74.13 %	16.5 MB	26.69 s
JavaScript (Bun) / Express	17685	1.1 ms	4.09 %	75.7 MB	3.80 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 (Deno) / Express	4976	5.1 ms	17.99 %	150.6 MB	3.87 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