Spring Microservices Tutorial

Monolithic Repository (Monorepo)

Modules

• Eureka server - Discovery
• API gateway - Gateway
• User service - Simple Eureka client
• Order service - RestClient for blocking service communication techniques
• Reactive order service - WebClient, reactive approach to non-blocking communication
• Product service - RabbitMQ, event-driven approach to non-blocking communication (publisher)
• Email service - RabbitMQ, event-driven approach to non-blocking communication (subscriber)
• Inventory service - RabbitMQ, Pub/Sub vs Point-To-Point
• Activity service - Kafka, event streaming approach (producer)
• Audit service - Kafka (consumer - replayability)
• Analytic service - Kafka (consumer - aggregation - stream processing)

RabbitMQ external dependency by Docker

• docker run -d --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:management
• docker start rabbitmq

Kafka external dependency by Docker

• In the project root folder: docker run --rm confluentinc/cp-kafka:7.5.0 kafka-storage random-uuid
  • See docker-compose.yaml for details
• docker compose up -d / docker compose down