Does each Microservice need to have its own database?

The short answer is yes. In order to be able to independently develop microservices , they must be loosely coupled. Each microservice’s persistent data must be private to that service and only accessible via it’s API .

What is Microservice database?

A monolithic application interacts with a single database. The data is shared between all application’s components. By contrast, in a microservices app, data ownership is decentralized. Every service is autonomous and has its own private data store relevant to its functionality.

Which acts as database of services in microservices?

Answer: service deployment Relational Database services acts as a Database of Services.

Why microservices should not share database?

Microservices with shared databases can’t easily scale. What is more, the database will be a single point of failure. Changes related to the database could impact multiple services. Besides, microservices won’t be independent in terms of development and deployment as they connect to and operate on the same database.

What kind of database should I use for my microservice?

For some services, a relational database is the best choice. Other services might need a NoSQL database such as MongoDB, which is good at storing complex, unstructured data, or Neo4J, which is designed to efficiently store and query graph data. Keep each microservice’s persistent data private to that service and accessible only via its API.

Do all services need to be in a database?

Most services need to persist data in some kind of database. For example, the Order Service stores information about orders and the Customer Service stores information about customers. What’s the database architecture in a microservices application?

What is encapsulating DB data with users microservice?

Encapsulating DB data with Users microservice we make it basically as proxy for the database. Of course, there can be cases, where a service applies sufficient transformation to the data, but it that case it’s new data already and it belongs to that microservice. Such data definitely can be requested via service API.

What is the appropriate way to handle shared database?

The “appropriate” way to handle this from the microservices perspective is to have the shared database mediated by a “database” microservice. Other microservices that wanted to know about the contents of the database would send messages to that “database microservice”.