Sharkbench

Benchmarking programming languages and web frameworks

Ktor (Kotlin)

Ktor is a framework for building asynchronous servers and clients in connected systems using the Kotlin programming language. It is designed to be flexible and easy to use, allowing developers to create highly scalable and robust applications. Ktor leverages Kotlin's coroutines for handling asynchronous operations elegantly.

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

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)
Kotlin (Temurin v21) / Ktor v3 (Netty)	2613	1.3 ms	1.37 %	557.3 MB
Kotlin (Temurin v21) / Ktor v2 (Netty)	2614	1.3 ms	1.37 %	421.2 MB

About Kotlin

Paradigm

Object-Oriented, Functional, Imperative

Execution

JIT, AOT

Typing

Static

Null Safety

YES

Memory Management

Garbage Collection

Kotlin is a modern programming language developed by JetBrains and officially supported by Google for Android development. It is fully interoperable with Java while addressing many of its limitations through features like null safety and extension functions. Kotlin has rapidly gained popularity for mobile development and is growing in server-side applications.

Kotlin web frameworks

How does Ktor compare other Kotlin 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)
Kotlin (Temurin) / Ktor (Netty)	2613	1.3 ms	1.37 %	557.3 MB

Popular web frameworks

How does Ktor 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
C# (.NET) / ASP.NET Core	14707	1.2 ms	2.64 %	136.5 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
Kotlin (Temurin) / Ktor (Netty)	2613	1.3 ms	1.37 %	557.3 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