title: Spring Cloud Gateway for composite API calls?
body: <p>I am starting to build a Microservice API Gateway, and I am considering Spring Cloud to help me with the routing. But some calls to the Gateway API will need multiple requests to different services. </p>
  
  <p>Lets say I have 2 services: <strong>Order Details Service</strong> and <strong>Delivery Service</strong>. I want to have a Gateway endpoint <strong><em>GET /orders/{orderId}</em></strong> that makes a call to <strong>Order Details service</strong> and then <strong>Delivery Service</strong> and combine the two to return full Order details with delivery. Is this possible with the routing of Spring cloud or should I make these by hand using something like RestTemplate to make the calls?</p>