Spring Cloud Spring Cloud Service Discovery & Registration

Question 1

Which Spring Cloud component provides service registration and discovery using Netflix Eureka?

Accepted Answer

Spring Cloud Netflix Eureka

Answer

Spring Cloud Netflix Eureka provides a service registry where microservices register themselves and discover other services.

Question 2

What annotation is used to enable a Spring Boot application to act as a Eureka Server?

Accepted Answer

@EnableEurekaServer

Answer

@EnableEurekaServer placed on the main application class activates the Eureka Server auto-configuration.

Question 3

What is the default interval at which Eureka clients send heartbeats to the server?

Accepted Answer

30 seconds

Answer

By default, Eureka clients send a heartbeat every 30 seconds to renew their lease with the server.

Question 4

Which property disables Eureka registration for a Spring Boot service during local development?

Accepted Answer

eureka.client.register-with-eureka=false

Answer

Setting eureka.client.register-with-eureka=false prevents the service from registering itself with the Eureka server.

Question 5

What mechanism does Spring Cloud use to support multiple service discovery backends like Eureka, Consul, and Zookeeper through a single API?

Accepted Answer

DiscoveryClient abstraction

Answer

Spring Cloud's DiscoveryClient interface provides a vendor-neutral abstraction that works with Eureka, Consul, Zookeeper, and other backends.

Spring Cloud Practice Test