Transaction RollBack Option

[JapaharJose]

Is there any option to rollback the emitted transaction(db update) when there is any error occurred in the process.

[intech]

@JapaharJose, could you kindly specify the package you are utilizing - moleculer-db or database - and mention the database adapter you are using? Thank you.

[JapaharJose]

@intech We are using mongodb and mongoose adapter.

[JapaharJose]

Can anyone answer this?

[ccampanale]

@JapaharJose AFAIK neither moleculer nor moleculer-db provide support for any sort of transactional awareness that would handle this sort of rollback.

The Moleculer framework itself focuses primarily on the composition and control of microservices for which there is no standard/inherent transactional practice/pattern. I highly recommend reviewing the patterns documented for both data management and transactional messages in microservice systems over on https://microservices.io/.

The Moleculer DB package which provides some standard, supported database adapters targeting various database management systems for Moleculer services also, as far as I know, is relatively unopinionated about the approach and utilization.

How your application handles transactions - for both data management and inter-service messaging - is something your application will need to implement.