Best Practices #

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• Minimize dependencies, put functionality directly into handler classes
• Utilize "compound handlers" to keep logic or transformations in pure functions for easier testability
• Lean on transactional middleware and/or cascading message returns when possible for easier testability
• Prefer method injection over contructor injection
• Try to only publish cascading events in the root message handler to make the message flow easier to understand
• "A-Frame" architecture
• One handler per message type unless trivial