Modular Monolith

ERP Plus uses a modular monolith architecture.

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Why?

Instead of microservices:

• simpler deployment
• shared database
• faster development
• lower operational cost

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Structure

Each module is a Rails Engine:

engines/
  erp_core
  erp_accounts
  erp_users

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Benefits

• Clear boundaries
• Reusable modules
• Independent testing
• Scalable design