Why does every microservice have its own database?

Question

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. 8 авг. 2019 г.

Do we need separate database for microservices?

You can use a single shared database with tables that owned by different microservices if your data is heavily related. Also in case you have strong requirements on data consistency and availiblty of a service.

Do microservices use common databases?

In the shared-database-per-service pattern, the same database is shared by several microservices. You need to carefully assess the application architecture before adopting this pattern, and make sure that you avoid hot tables (single tables that are shared among multiple microservices).

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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