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Shadow Table Strategy for Seamless Service Extractions and Data Migrations
The shadow table strategy creates a synchronized duplicate of the data that keeps the production system fully operational during changes, enabling zero-downtime migrations. The approach supports diverse scenarios - including database migrations, microservices extractions, and incremental schema refactoring - that update live systems safely and progressively.
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The Wonders of Postgres Logical Decoding Messages
In this article, author Gunnar Morling discusses Postgres database's logical decoding function to retrieve the messages from write-ahead log, process them, and relay them to external consumers, with help of use cases like outbox, audit logs and replication slots.
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Saga Orchestration for Microservices Using the Outbox Pattern
The outbox pattern, implemented via change data capture, is a proven approach for addressing the concern of data exchange between microservices. The saga pattern, as demonstrated in this article, is useful for data updates that span multiple microservices.