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How do you handle communication between Microservices?
There are two basic messaging patterns that microservices can use to communicate with other microservices.
- Synchronous communication. In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC.
- Asynchronous message passing.
What is synchronous communication in Microservices?
A synchronous microservice is one in which data moves to and from an endpoint of a service in a blocking interaction. A typical example of a synchronous data exchange is an HTTP request/response interaction, seen in Figure 1 below.
2 Answers. You are not likely to benefit from a Microservices architecture if all the services share the same database tables. This is because you are effectively tightly coupling the services. If a database table changes all the services will have to change.
What problems do microservices solve?
With microservices, you get true separation among the teams. They each have their own, much smaller codebases. Builds are snappy, and all facets of development are more manageable at smaller scales. This can mean some enormous windfalls in productivity.
How is synchronous communication used in a microservice?
Synchronous communication. In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC. This option is a synchronous messaging pattern because the caller waits for a response from the receiver. Asynchronous message passing.
Is it possible to avoid communication between microservices?
You can’t avoid the communication in these situations. So, you need to implement it as efficient as possible. You should prefer asynchronous communication for all remote calls. They don’t block any resources while you’re waiting for the response and you can even execute multiple calls in parallel.
How does microservices inter-service communication work in monolithic application?
Microservices Inter-Service Communication As you can see in the preceding diagram, a monolithic application has all of its components combined as a single artifact and deployed to a single machine. One component calls another using language-level method calls.
How to avoid service coupling in Java microservices?
We can avoid this coupling by using the Hystrix library, which enables us to use fallbacks in case the service is not available at that time. There are numerous protocols, such as REST, gRPC, and Apache Thrift, that can be used to interact with services synchronously.