description Kotlin + Ktor Stack Overview
Ktor is an open-source framework developed by JetBrains for creating asynchronous servers and clients in Kotlin. It runs primarily on the JVM while also supporting Kotlin's multiplatform ecosystem, and its modular design lets developers select features such as routing, authentication, serialization, and content negotiation. The stack is intended for Kotlin developers building web services, backend applications, and HTTP clients with coroutine-based concurrency.
help Kotlin + Ktor Stack FAQ
What is Ktor and who develops it?
Ktor is an open-source framework created by JetBrains, the company behind the IntelliJ IDEA IDE and the Kotlin programming language itself. It is designed for building asynchronous web servers and clients in Kotlin, leveraging Kotlin coroutines for non-blocking I/O.
Does Ktor run on the JVM or is it Kotlin Multiplatform?
Ktor runs primarily on the JVM but also supports Kotlin Multiplatform, allowing the same networking code to be used across JVM, JavaScript, and native targets. This makes it suitable for both server-side applications and shared client logic in mobile or multiplatform projects.
How does Ktor compare to Spring Boot for backend development in Kotlin?
Ktor is lighter and more modular than Spring Boot, using a pipeline-based architecture where developers select only the features they need, such as routing, authentication, or content negotiation. Spring Boot provides a larger, convention-over-configuration ecosystem with extensive integrations, while Ktor offers finer control and a smaller footprint.
What companies or projects use Ktor in production?
Ktor is used by JetBrains in some of its own products and tooling, and it has been adopted by various Kotlin-focused teams for microservices and APIs. While it does not have the same enterprise penetration as Spring, it is a popular choice in the Kotlin community for projects prioritizing coroutine-native async I/O.
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