Added API Gateway Configuration

cloud-gateway/src/main/java/org/example/CloudGatewayApplication.java

@@ -2,7 +2,10 @@ package org.example;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+
 @SpringBootApplication
+@EnableDiscoveryClient
 public class CloudGatewayApplication {
     public static void main(String[] args) {
         SpringApplication.run(CloudGatewayApplication.class, args);

cloud-gateway/src/main/resources/application.yml

+server:
+  port: 9090
+spring:
+  application:
+    name: api-gateway
+  cloud:
+    gateway:
+      routes:
+        - id: invoicing-service
+          uri: lb://invoicing-service
+          predicates:
+            - Path=/invoices/**
+        - id: users-service
+          uri: lb://users-service
+          predicates:
+            - Path=/users/**
+eureka:
+  client:
+    register-with-eureka: true
+    fetch-registry: true
+    service-url:
+      default-zone: http://localhost:8761/eureka/
+#  instance:
+#  hostname: localhost
+#  preferIpAddress: true
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