How to call Java microservices to each other?

2 years ago
Benjamin Taylor
1 minute

In Java microservices architecture, there are several common ways to implement communication between microservices.

  1. RESTful API: Communication is done using the HTTP protocol, enabling communication between microservices through sending HTTP requests and receiving HTTP responses. RESTful APIs can be implemented using frameworks such as Spring Boot or Java EE.
  2. RPC (Remote Procedure Call) is a protocol that allows one program to call another program (usually on different machines). Examples of common Java RPC frameworks include Dubbo, gRPC, Thrift, etc.
  3. Message queue: Utilizing a message queue as middleware, messages are sent to the queue and other microservices retrieve messages from the queue for processing. Common Java message queue frameworks include ActiveMQ, RabbitMQ, and others.
  4. Service Gateway: All microservice requests are centrally processed through a unified entry point (service gateway). The service gateway can perform operations such as load balancing and security authentication. Common Java service gateway frameworks include Spring Cloud Gateway and Netflix Zuul.

The above are some common ways of calling between Java microservices, the specific choice depending on actual needs and project architecture.

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