Sharkbench

Benchmarking programming languages and web frameworks

Koa: Bun vs Deno vs Node.js

Koa is a lightweight and expressive web framework for Node.js created by the team behind Express. It leverages JavaScript's async functions to eliminate callbacks and improve error handling. Koa provides an elegant middleware architecture that processes requests downstream and manipulates responses upstream. Unlike Express, Koa doesn't bundle any middleware in its core or provide built-in routing, emphasizing modularity and giving developers greater flexibility in their component choices.

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 2.87x requests per second compared to Deno, a 186.76% 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	19821 (+124.52 %)	1.3 ms (-64.66 %)	7.41 % (-57.43 %)	52.7 MB (-1.05 %)
Node.js	8828	3.6 ms	64.84 %	53.3 MB
Deno	6912 (-21.70 %)	4.4 ms (+23.28 %)	51.36 % (-13.48 %)	129.7 MB (+143.57 %)

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) / Koa v3	8828	3.6 ms	64.84 %	53.3 MB
JavaScript (Node.js v22) / Koa v2	8662	3.7 ms	64.77 %	61.7 MB
JavaScript (Node.js v20) / Koa v3	8625	3.7 ms	64.66 %	51.4 MB
JavaScript (Node.js v20) / Koa v2	8376	3.8 ms	65.78 %	54.3 MB
JavaScript (Deno v2.1) / Koa v3	6912	4.4 ms	51.36 %	129.7 MB
JavaScript (Deno v2.1) / Koa v2	6921	4.4 ms	49.87 %	124.0 MB
JavaScript (Bun v1) / Koa v3	19821	1.3 ms	7.41 %	52.7 MB
JavaScript (Bun v1) / Koa v2	20016	1.3 ms	7.81 %	52.6 MB

Popular web frameworks

How does Koa 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) / Koa	19821	1.3 ms	7.41 %	52.7 MB
C# (.NET) / ASP.NET Core	14707	1.2 ms	2.64 %	136.5 MB
JavaScript (Node.js) / Koa	8828	3.6 ms	64.84 %	53.3 MB
JavaScript (Deno) / Koa	6912	4.4 ms	51.36 %	129.7 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