Key Concepts

We think that understanding the concepts presented in this chapter are crucial to being able to use spray-routing effectively:

• Big Picture
  • The HttpService
  • The runRoute Wrapper
• Routes
  • Constructing Routes
  • Composing Routes
  • The Routing Tree
• Directives
  • What Directives do
  • The Responder Chain
  • Composing Directives
  • Type Safety
• Rejections
  • Predefined Rejections
  • RejectionHandler
  • Rejection Cancellation
  • Empty Rejections
• Exception Handling
• Timeout Handling