microservice

[syrym-almaty]

Microservices

🔹 Spring Boot

• Foundation for building production-ready Spring applications.
• Offers starter dependencies (web, data, security) and embedded servers (Tomcat/Jetty).
• Ideal for microservices setup, minimizing boilerplate code.

🔹 Spring Cloud

• Tools for distributed system needs: service discovery, config management, load balancing.
• Key components:
  • Spring Cloud Netflix: Eureka (service discovery), Zuul (API gateway), Hystrix (resilience).
  • Spring Cloud Gateway: Reactive API gateway for routing.
  • Spring Cloud Config: Centralized configuration.
  • Spring Cloud OpenFeign: Declarative REST client for inter-service communication.

🔹 Spring WebFlux

• Reactive, non-blocking web framework for high-performance applications.
• Built on Project Reactor for asynchronous data processing.
• Supports both annotation and functional programming models.

🔹 Spring Native

• Compiles Spring apps into native executables using GraalVM.
• Faster startup times, reduced memory usage.
• Aimed at microservices and serverless deployments.

🔹 Reactive Programming with Project Reactor

• Non-blocking, event-driven architecture for asynchronous data flows.
• Critical for building responsive and resource-efficient systems.
• Integral to Spring WebFlux and reactive microservice designs.

🔹 Spring Security with OAuth2 & JWT

• Comprehensive security framework, supporting:
  • OAuth2 and JWT for stateless authentication.
  • Role-based access, endpoint protection.
• Essential for securing microservices in distributed systems.

🔹 Spring Actuator

• Monitoring, health checks, and metrics for microservices.
• Integrates with tools like Prometheus and Grafana for application observability.
• Offers insights into system performance and health.

🔹 Messaging & Event-Driven Systems

• Asynchronous communication between microservices.
• Options:
  • Apache Kafka: Real-time event streaming.
  • RabbitMQ: Reliable message queuing.
• Supports loosely-coupled, scalable microservices architecture.

🔹 Containerization with Docker & Kubernetes

• Docker: Standardizes deployment of Spring microservices in containers.
• Kubernetes: Orchestrates containers, handles scaling, failover, and networking.
• Crucial for maintaining consistent environments and automating deployments.

🔹 API Documentation with Swagger/OpenAPI

• Auto-generates REST API documentation.
• Integrates with Springdoc OpenAPI for Spring Boot.
• Essential for collaboration, especially in microservices ecosystems.

🔹 Observability with Elastic Stack (ELK)

• Centralized logging and visualization.
• Components:
  • Elasticsearch: Indexes and stores logs.
  • Logstash: Aggregates and processes logs.
  • Kibana: Dashboards and data visualization.
• Provides deep insights into microservice interactions and performance.

🔹 CI/CD for Automation

• Automates building, testing, and deploying microservices.
• Key Tools:
  • Jenkins / GitHub Actions / GitLab CI: Pipeline setup for automation.
  • Argo CD (Kubernetes-native): GitOps for Kubernetes deployments.
• Reduces release cycle time, ensuring continuous delivery.

🔹 Testing & Resilience

• Testing tools and patterns for reliability.
• Key components:
  • JUnit, Mockito: Unit and integration testing.
  • Spring Cloud Contract: Contract testing for service interactions.
  • Resilience4j: Patterns like circuit breaker, retry, rate limiting.
• Ensures resilient, fault-tolerant microservices.

[syrym-almaty]

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