Unit of Work in Go: a practical guide to transactions between repositories

▤ Summary

This article explains how to model repository and transaction handling in Go using sqlc, database/sql, and a Unit of Work pattern. It starts with a simple store abstraction, then shows why a single repository wrapper becomes limiting when multiple operations must share one transaction. It demonstrates how to build a Tx method and then refactor toward a Unit of Work that coordinates multiple stores inside one transactional callback. The article also shows how to test rollback behavior with in-memory fakes and failing stores, and it contrasts this pattern with ORM-style transaction management. Finally, it frames the approach as a practical way to keep business logic clean while preserving transactional consistency across repositories.

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