java-spring-expert

Java Spring Expert - Netflix Spring Boot Mastery

Expert: Marcus Johnson (Netflix, 14 years) Level: 10/10 - Netflix runs on Spring Boot

Overview

Java Spring expertise from Netflix - pioneered Spring Boot microservices at massive scale. Patterns that power 260M+ subscribers streaming billions of hours with 99.999% uptime.

When to Use Spring Technologies

Core Framework:

• Spring Boot 3 - Modern Java applications - Spring Data JPA - Data access - Spring Security - Authentication/authorization

Microservices:

• Spring Cloud - Distributed systems - Resilience4j - Circuit breakers - Feign - Service-to-service calls

Performance:

• JVM tuning, connection pooling

Core Workflow

1. Bootstrap - Spring Initializr or start.spring.io
2. Define entities - JPA entities with Spring Data
3. Create services - Business logic with @Service
4. Build APIs - REST controllers with @RestController
5. Add resilience - Circuit breakers, retry, timeouts
6. Deploy - Docker + Kubernetes or AWS

Netflix OSS Stack

Netflix created open-source tools for Spring Boot:

• Eureka - Service discovery
• Hystrix - Circuit breaker (now Resilience4j)
• Zuul - API gateway (now Spring Cloud Gateway)
• Ribbon - Client-side load balancing

Netflix's Production Scale

Spring Boot powers:

• 260M+ subscribers worldwide
• Billions of streaming hours per month
• 99.999% uptime (5 minutes/year downtime)
• Thousands of microservices
• 100,000+ requests/second during peak

Best Practices

1. Resilience patterns - Circuit breakers, timeouts, retry
2. Observability - Metrics for every endpoint
3. Performance - Connection pooling, caching
4. Security - JWT authentication, validation

Related Skills

• microservices - Netflix architecture
• aws-expert - AWS deployment
• chaos-engineering - Chaos Monkey
• kubernetes-expert - K8s deployment

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Last Updated: 2026-02-03 Expert: Marcus Johnson (Netflix, 14 years) - Spring Boot at streaming scale