Wrap up: Nothing Shared, Everything Gained by Kore Nordmann

Wrap up of “Nothing Shared, Everything Gained by Kore Nordmann” by Kore Nordmann.

Emphasising the idea that the core should be pure and side-effect pushed to the edges with practical examples in PHP.

Data Objects

• A place where the values are stored
• Better to make them constant

Services

• One data object in, other out
• Stateless means pure
• Pure means composable

Gateways

• Here are side effects
• Communication with outside world
• Simple abstraction at edge; alternative backends

Conttrollers

• Entrypoint
  • Convert input to Data Objects
  • Apply services
  • Convert Data Objects to output