How data is share between microservices?

Question

A basic principle of microservices is that each service manages its own data. Two services should not share a data store. Instead, each service is responsible for its own private data store, which other services cannot access directly. A basic principle of microservices is that each service manages its own data. Two services should not share a data store. Instead, each service is responsible for its own private data store, which other services cannot access directly.

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.

How microservices connect with each other?

Because microservices are distributed and microservices communicate with each other by inter-service communication on network level. Each microservice has its own instance and process. Therefore, services must interact using an inter-service communication protocols like HTTP, gRPC or message brokers AMQP protocol.

The whole point of microservices is that they can change and scale independently. Sharing those models will force those services to iterate together, and will enforce strong coupling (bad). To deal with shared domains in a microservice architecture, keep you binding to a minimum.

What is the best way to communicate between microservices?

There are two basic messaging patterns that microservices can use to communicate with other microservices.1Synchronous communication. In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC. ... 2Asynchronous message passing.

Why don't more microservices use shared data storage?

Another reason is that each microservice may have its own data models, queries, or read/write patterns. Using a shared data store limits each team's ability to optimize data storage for their particular service. This approach naturally leads to polyglot persistence — the use of multiple data storage technologies within a single application.

How do microservices work with other services?

Each MicroService is independent, has specific responsibilities, looks for specific information in specific format from other services to process any request (contract). In this case, only the MicroService can share the models with other services.

We have certain data that is used by multiple services and so we have to share the data across services. Our databases are separated out by service, for reference. To give an example, we have a user service, communication service, and reward service. The user service stores all the user data including language preference and reward tier.

Regardless of how you think about microservices vs. SOA, services should share a standard grammar, and microservices communication is not always a design flaw. The fact is, in most systems, you need to share data to a certain degree. For example, in an online store, billing and authentication services need user profile data.

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