A scalable component is one which coordinates children components and filters their results.

  • input: commands from parent
  • output: filtered data to parent
  • contains: child components.

Children can send information to parents and commands/requests to their own children.

Children must not leak information in any other direction.

A parent completes an operation when all of its children have completed sub-operations.

Corollary: a parent component is busy as long as any of its children components are busy (recursively).

See Also

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