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Hexagonal (Clean) Architecture -> Port & Adapter Style
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Domain Driven Desing (DDD)
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SAGA Pattern : process & rollback ( compensating transactions )
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Outbox Pattern : Pulling Outbox Table With Scheduler , Saga Status
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Cover Failure Scerinarios :
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Ensure idempotency using outbox table in each service
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Prevent concurrency issues with optimistic looks & DB constaints
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Kepp updating saga and order status for each operation
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CQRS Pattern : Materialized view & Event Sourcing
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Relational Database : for ACID and distributed transactional
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Kafka Messaging Systems for CQRS desing and Microservices Communication
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Kubernetes And GKE ( Google Kubernetes Engine )