http4ss

http4ss is a Scala library for building HTTP services. It is built on top of the http4s-kernel, which provides a core set of abstractions for HTTP request and response handling. http4s-server provides the necessary components for running these services on a server. It supports various server backends, including Netty, Jetty, and Blaze. http4s-client offers client-side capabilities, allowing applications to make HTTP requests to other services.

The library is designed to be functional and type-safe, leveraging Scala's features to provide a robust and expressive API. It emphasizes immutability and pure functions, which can lead to more predictable and testable code. http4s uses `cats` and `cats-effect` for effects and concurrency, allowing for the management of side effects and asynchronous operations in a structured way.

Key features of http4s include its routing DSL, which enables the definition of complex API endpoints in a clear and concise manner. It also provides middleware support, allowing developers to easily add cross-cutting concerns like logging, authentication, and error handling to their services. http4s is known for its focus on composability and its ability to integrate well with other libraries in the Scala ecosystem. It is actively maintained and has a community of users.