Vapor is a comprehensive server-side web framework designed for building scalable, high-performance applications and APIs in Swift. It provides a non-blocking, event-loop-based runtime that manages concurrent task processing, background job queues, and asynchronous request handling. The framework is built around a dependency injection container that manages the lifecycle and resolution of services, configurations, and database connections throughout the request pipeline.
The framework distinguishes itself through a protocol-oriented design that emphasizes type safety across all layers of the application. It includes a robust object-relational mapper that abstracts database interactions, allowing developers to define data models and execute complex queries using a chainable, type-safe interface. This is complemented by a modular middleware chain for intercepting requests and a built-in templating engine for server-side HTML rendering.
Beyond core routing and request handling, the project offers an extensive suite of tools for modern web development. This includes comprehensive support for authentication via sessions and industry-standard tokens, real-time bidirectional communication through WebSockets, and automated schema-based database migrations. The framework also provides built-in validation logic, cryptographic utilities, and tools for managing application lifecycles and background processing.
The project is distributed as a Swift package, with documentation and tooling that support standard testing frameworks and containerized deployment workflows.
