Does microservice uses a common database?

Question

The use cases of using a shared database with microservices aren't common. An example could be a temporary state while migrating the monolith to microservices. The primary benefit of the shared database over per service is transaction management. There is no need to span the transactions over the services. 31 мар. 2022 г.

Can we have single database in microservices?

You can use a single shared database with tables that owned by different microservices if your data is heavily related.

I've seen folks refer to this idea in part, trivially, as “each microservice should own and control its own database and no two services should share a database.” The idea is sound: don't share a single database across services because then you run into conflicts like competing read/write patterns, data-model conflicts ...

Why microservices have their own database?

It would allow you to pick the database technology which fits your Business requirement best in order to get the best performance or usage of it. For example some specific micro-service might have some Read-heavy operations with very complex filter options and a full text search requirement.

Does microservices use NoSQL database?

This is important for a microservices environment where you'll be deploying a LOT and often. Most of all, microservices are built for speed. NoSQL enables most services to get set up quickly, scale-out fast, and create additional data nodes where you can test without touching the persistence layer.

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