Building a Simple REST API with Elixir

This guide explains how to create a basic REST API using Elixir and the Phoenix Framework. To start, install Elixir and Erlang, then install the Phoenix Framework and create a new Phoenix API project. Configure the database and create the database using the `ecto.create` command. Generate a Book resource using `phx.gen.json` and add the generated routes to the router. Run the database migration to create the books table. The Book schema defines the database model, and the Library context contains the business logic. The BookController handles HTTP requests, and the BookJSON module formats the data for JSON responses. A custom endpoint can be added to search books by author. The API can be tested using tools like curl, Postman, or any HTTP client. Finally, the guide provides explanations of Elixir-specific concepts, such as pattern matching, and enhanced validation techniques.