Key Concepts

• Message Handlers
  • Directly invoking a function
  • Calling a function using an alias
  • Calling the function using a command
• Modularity
  • Basics
  • Application module structure
• Events and publish-subscribe
• Transaction Context
• Transaction callbacks and middlewares
• Dependency Injection
  • lagom integration
  • dependency_injector integration
• Message Composition and Decomposition