microservices

Microservices Architecture - Netflix Expertise

Expert: Marcus Johnson (Netflix Principal Engineer, 15 years) Level: 10/10 - Architected Netflix global streaming (260M+ subscribers)

Overview

Microservices at Netflix scale - 100+ services, 15 billion API requests/day, 99.999% uptime. Netflix pioneered microservices and open-sourced the tools that power them.

Netflix OSS Stack

1. Service Discovery - Eureka

// Service registration
@SpringBootApplication
@EnableEurekaClient
public class OrderService {
    public static void main(String[] args) {
        SpringApplication.run(OrderService.class, args);
    }
}

// application.yml
eureka:
  client:
    serviceUrl:
      defaultZone: http://eureka-server:8761/eureka/
  instance:
    preferIpAddress: true
    leaseRenewalIntervalInSeconds: 10

2. Circuit Breaker - Hystrix

@Service
public class UserService {

    @HystrixCommand(
        fallbackMethod = "getUserFallback",
        commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1000"),
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "50")
        }
    )
    public User getUser(String userId) {
        return restTemplate.getForObject(
            "http://user-service/users/" + userId,
            User.class
        );
    }

    public User getUserFallback(String userId, Throwable e) {
        // Return cached data or degraded response
        return cacheService.get(userId);
    }
}

3. API Gateway - Zuul

@SpringBootApplication
@EnableZuulProxy
public class ApiGateway {
    public static void main(String[] args) {
        SpringApplication.run(ApiGateway.class, args);
    }
}

// Routes configuration
zuul:
  routes:
    user-service:
      path: /api/users/**
      serviceId: user-service
    order-service:
      path: /api/orders/**
      serviceId: order-service

Netflix Patterns

1. Resilience

• Circuit breakers (Hystrix)
• Timeouts on every call
• Fallback responses
• Bulkhead isolation
• Retry with exponential backoff

2. Observability

• Distributed tracing (Zipkin)
• Metrics (Atlas)
• Centralized logging (ELK)
• Service mesh (future: Istio)

3. Deployment

• Blue-green deployments
• Canary releases
• Automated rollback
• Feature flags

Related Skills

• java-spring-expert - Spring Boot/Cloud
• chaos-engineering - Chaos Monkey
• video-streaming - Netflix streaming

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Last Updated: 2026-02-03 Expert: Marcus Johnson (Netflix, 15 years) - 99.999% uptime