Build Pure Functional HTTP APIs with Scala and http4s

Are you ready to move beyond traditional object-oriented patterns and build highly reliable, scalable backend services? Functional programming offers powerful tools for creating predictable and maintainable APIs. This course teaches you how to leverage the full power of Scala’s functional ecosystem to construct pure HTTP APIs. You will gain practical experience integrating modern libraries for routing, effect handling, database interaction, and configuration management, resulting in robust, production-ready applications. What you'll learn: * Understand the core concepts of pure functional programming, including immutability and referential transparency in Scala. * Configure and implement RESTful API routing using the http4s library for handling HTTP requests and responses. * Master data serialization and deserialization (JSON) using Circe, ensuring type safety throughout the API layer. * Practice safe, functional database access and transaction management using the Doobie library. * Apply type classes and functional effect management to handle asynchronous operations and resource allocation cleanly. * Implement configuration management using PureConfig to separate application settings from code. The course begins with foundational definitions of functional programming concepts and the modern Scala ecosystem. We then move step-by-step through setting up a project, defining models, implementing routing, handling effects, and connecting to a database, focusing on best practices for maintainability. This course is designed for beginners in functional programming and Scala developers who want to learn how to build production-grade APIs using modern, type-safe techniques. No prior experience with http4s or functional effect systems is required. Start building scalable, pure functional backend services today.