NestJS · Senior · Question 23 of 75

How do you keep transactions consistent across several services in one request without passing a transaction object everywhere?

✓Correct answer: Store the transaction (or entity manager) in ALS and have repositories pick it up, e.g. with @nestjs-cls/transactional
2Open a separate transaction in each service
3Use request-scoped repositories for every entity

Explanation

ALS keeps the transaction bound to the async flow of the request, so nested service calls join it.

Further reading

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