API Gateway & Routing with Spring Cloud Gateway Mock Test

Question 1: API GATEWAY - Purpose of Spring Cloud Gateway

What is the primary role of Spring Cloud Gateway in a microservices architecture?

Question 2: API GATEWAY - Code Snippet (Basic Route)

What does this configuration achieve?

@Bean
public RouteLocator routes(RouteLocatorBuilder builder) {
    return builder.routes()
        .route("order_route", r -> r.path("/orders/**")
            .uri("http://localhost:8081"))
        .build();
}

Question 3: API GATEWAY - Using Service Discovery

How do we enable service discovery–based routing in Spring Cloud Gateway with Eureka?

Question 4: API GATEWAY - Code Snippet (Discovery Routing)

What does this route config do?

spring:
  cloud:
    gateway:
      routes:
        - id: payment_route
          uri: lb://payment-service
          predicates:
            - Path=/payments/**

Question 5: API GATEWAY - Predicates in Routing

What do Predicates in Spring Cloud Gateway define?

Question 6: API GATEWAY - Code Snippet (Header Predicate)

What does this config enforce?

spring:
  cloud:
    gateway:
      routes:
        - id: auth_route
          uri: http://localhost:8082
          predicates:
            - Header=X-Auth-Token, .+

Question 7: API GATEWAY - Filters

What is the purpose of filters in Spring Cloud Gateway?

Question 8: API GATEWAY - Code Snippet (Add Request Header Filter)

What does this filter configuration do?

spring:
  cloud:
    gateway:
      routes:
        - id: log_route
          uri: http://localhost:8083
          predicates:
            - Path=/logs/**
          filters:
            - AddRequestHeader=X-App-Name, GatewayService

Question 9: API GATEWAY - Global Filters

What is true about Global Filters in Spring Cloud Gateway?

Question 10: API GATEWAY - Rate Limiting

How can Spring Cloud Gateway implement API rate-limiting?