Should Microservices be independent?
The objective of microservices is to provide independently deployable, loosely coupled, lean services. This means that you shall be able to change one of the microservices however you want, and can deploy it in production without changing the others. Your scenario 1 indeed breaks the monolith down into smaller pieces.
What does independent service mean in Microservices?
Microservices is an architectural design for building a distributed application using containers. They get their name because each function of the application operates as an independent service. This architecture allows for each service to scale or update without disrupting other services in the application.
Does Microservice need its own database?
The short answer is yes. For example, if you are using a relational database then the options are: Private-tables-per-service – each service owns a set of tables that must only be accessed by that service.
What is the microservices approach in software engineering?
It is a software engineering approach that focuses on decomposing an application into single-function modules with well-defined interfaces. These modules can be independently deployed and operated by small teams that own the entire lifecycle of the service.
What are the units of deployment for microservices?
Therefore, the units of deployment for microservices (and even for databases in this application) are Docker containers, and the reference application is a multi-container application that embraces microservices principles. eShopOnContainers GitHub repo. Source code for the reference application
When does a service violate the microservice architecture?
So a service does not violate the microservice architecture just because you let two of them share some resource – it violates it when sharing the resource becomes mandatory. It doesn’t matter. The only scenario where it could theoretically matter is if one service needs to migrate to a different versions of the database.
What is the difference between SOA and Microservice?
Micro Service is a part of SOA. It is an implementation of SOA. Business units are dependent. They are independent of each other. The technology stack is lower compared to Microservice. SOA applications are built to perform multiple business tasks. They are built to perform a single business task.