Java Microservices: Spring Boot, Spring Cloud, Docker, Kubernetes, Microservices Architecture, Netflix OSS, Eureka, Zuul, Ribbon, Hystrix, Consul, API Gateway, Config Server, Sleuth, Zipkin, Prometheus, Grafana, RabbitMQ, Kafka, Elasticsearch, Logstash, Kibana, Fluentd, Jaeger, OpenTracing, OpenAPI, Swagger, RESTful Web Services, GraphQL, gRPC, Thrift, Micronaut, Quarkus, Helidon, Service Mesh, Istio, Linkerd, Envoy, Service Discovery, Circuit Breaker, Load Balancer, Rate Limiting, OAuth 2.0, JWT, SAML, WebSockets, Server-Sent Events (SSE), Reactive Programming, Event Sourcing, CQRS, Saga Pattern, API Composition, API Versioning, Containerization, Orchestration, Continuous Integration/Continuous Deployment (CI/CD), GitOps, Monitoring, Logging, Tracing, Fault Tolerance, Resilience, Scalability, High Availability, Security, Data Management, Event-Driven Architecture, Message Brokers, Cloud Native, DevOps, NoSQL Databases, SQL Databases, Cache, Session Management, Microservices Testing, Contract Testing, End-to-End Testing, Performance Testing, Load Testing, Chaos Engineering, Blue/Green Deployment, Canary Releases, Feature Flags, Service Registry, Centralized Configuration, Distributed Tracing, API Management, Microservices Deployment, Microservices Design Patterns, Cloud Computing Services, Serverless Architecture, Function as a Service (FaaS).