Distributed System Considerations

Avishek Sen Gupta on 22 July 2021

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Business Characteristics

• Multi-Tenancy
• Third Party Integrations
• Legacy Interoperability
• Ease of Future Integrations

System Characteristics

• Domain Model
• Graceful Service Degradation
• Consistent Integration Patterns
• Resiliency under Failures and Load
• Cross-System Observability
• API and Data Model Evolution
• API Primitives, Coarse-Grained vs. Fine-Grained APIs
• Distributed Transactions
• PCI and PII Data Security
• Event Sourcing, Histories, and Auditability
• Data Consistency Guarantees
• Idempotency Guarantees
• Guaranteed Delivery Properties

Legacy Migration

• Synchronisation to/from Legacy
• Fallback during Transition
• Business Validation during Data Migration
• Data Migration API
• Consistency Requirements of Migrated Data
• Mapping Legacy Domain to New Domain

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