Java Microservices

Java 8, Spring Boot 2.3.1, Hibernate, PostgreSQL

&&:

Store configuration details on cloud using CloudConfig.
Load balance requests between microservices using Ribbon.
Discover services in cloud using Eureka.
- Ribbon with Eureka.
Increase resilience through Hystrix
- Circuit Breaker pattern, Fail Silent approach.
Use asynchronous communication to improve performance.
- hystrix-javanica: Asynchronous Execution.
Create a API gateway using Zuul.
- Zuul and Ribbon.
- Zuul and Hystrix.
- Cookies and Sensitive Headers.
  official reference
Simplify REST calls through Feign.
Implemented only to get restaurant-ms. RestTemplate is still used to get customer-ms.
Monitor microservices through Turbine, Sleuth and Zipkin.
- Zipkin (docker run -d -p 9411:9411 openzipkin/zipkin).
  https://github.com/openzipkin/zipkin.
Secure Config.
- Spring Basic Authentication Securing Cloud Config Server.
- Encrypt the sensitive values using Postman(Basic Auth and the value to encrypt), you need the key in the cloud-config-server.
  - disable CSRF in cloud-config-server to /encrypt & /decrypt
  - spring-cloud/spring-cloud-config#934 (comment)

External to ms_technology_1

CloudConfig

Inside ms_technology_1

Services

eureka-server
zuul-server

Microservices

restaurant-ms
customer-ms
order-ms

resturant (id, restaurantName, restaurantLocation)
customer (id, customerName, customerLocation)
order (id, orderNumber, restaurantId, customerId, createdAt)

A customer -> places an order -> to a restaurant

Suppose you are a driver and this is what you received to deliver an order to a client:

{
    "id": "101001",
    "orderNumber": "Ord-Nro-1",
    "createdAt": "2020-03-29T01:30:19.396+0000",
    "customer": {
        "id": "101302",
        "customerName": "Dan Jav",
        "customerLocation": "345 Beautiful Rd, Mercerville, NJ"
    },
    "restaurant": {
        "id": "1102",
        "restaurantName": "Sabor Cubano",
        "restaurantLocation": "12 Beautiful Rd, Mercerville, NJ"
    }
}

Basically you need to go to the restaurant location, pick up the order number and deliver it to the customer location

anandvarkeyphilips / ms_technology_1

Java Microservices

Java 8, Spring Boot 2.3.1, Hibernate, PostgreSQL

&&:

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