How was the integration process of a microservice carried out in your last project, and through what mechanism?

In my last project, microservice integration was carried out via REST API using Spring Boot. The integration mechanism included:

• Defining API contracts with OpenAPI/Swagger to agree on request and response formats.
• Using an HTTP client (e.g., RestTemplate or WebClient) to call other microservices.
• Handling errors and timeouts to ensure robustness.
• Implementing authentication and authorization mechanisms (e.g., JWT).

Example of calling another microservice via WebClient:

WebClient webClient = WebClient.create("http://other-service");

Mono<Response> response = webClient.get()
    .uri("/api/data/{id}", id)
    .retrieve()
    .bodyToMono(Response.class);

response.subscribe(r -> System.out.println(r));

Also used orchestration and service discovery systems (e.g., Eureka) for dynamic discovery of microservice addresses.