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Transactional integrity with order service and MongoDB #2

@davidkopp

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@davidkopp

The pattern database per service is used. For each service that participates in the saga workflow, transactional integrity must be ensured using the CDC service of the Eventuate Tram framework.

However, the CDC service only implements the transactional outbox pattern for the PostgreSQL instances, but not for the MongoDB instance of the order service. MongoDB is not supported by the Eventuate Tram framework.
As no transactions are configured for the MongoDB connection anyway, the transactional outbox pattern would have no use in this case anyway. This ultimately means that there is no transactional integrity in the operations of the order service with the current implementation.

c4-container-microservices-messaging-simplified

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