Should each microservice have separate database?

Question

You should design your microservices architecture in such a way that each individual microservice has its own separate database with its own domain data. This will allow you to independently deploy and scale your microservices. 12 сент. 2018 г.

Do microservices need separate database?

As you described it very well above, each microservice needs to own it's DATA, which could be held within a dedicated database, within a dedicated schema (within a database), or even a set of dedicated tables (within a schema within a database).

Why each microservice should have its 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.

Can different microservices use same database?

Yes, it's possible to integrate a database for microservices. You can create a single shared database with each service accessing data using local ACID transactions.

Does each microservice need its own server?

Microservices are decentralized and run on different servers, but they still work together for an application. Ideally, each microservice serves a single function, which enables simple routing between services with API communication.

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