abp/docs/en/solution-templates/microservice/communication.md

Microservice Solution: Communication

You must have an ABP Business or a higher license to be able to create a microservice solution.

Microservice solution template provides multiple ways to communicate between services, applications and API gateways. This documents explains the communication methods in the solution template.

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.

• HTTP API Calls
• gRPC Calls

Asynchronous Communication

In this pattern, a service sends message without waiting for a response, and one or more services process the message asynchronously. This is done by using a message broker or event bus. Further information check out.

• Distributed Events