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Sample E-commerce project to create an application leveraging microservices architecture
This microservices e-commerce sample project demonstrates how multiple services on the best microservices architecture to enable and scale the product.
The sample application has two services namely shopping-customer-service and shopping-order-service, for authorization the service name as shopping-auth-service. To get the customer details and get the respective order details for the customer.
When one service needs to access a resource from another service , all it has to do is ask discovery and registration server (Consul) to give one of the service information.
Netflix Zuul is a the reverse proxy server which acts as the API Gateway for accessing the micro services behind this it's routes the request to the respective service. Microservice’s stay behind reverse proxy server and needs to be consumed via api gateway. The api-gateway micro service with docker profile runs on port 8080 and can be accessed by http://localhost:8080 .
Configuration done in API Gateway for Routing:
zuul:
ignoredServices: '*'
sensitive-headers:
- Cookie,Set-Cookie
host:
connect-timeout-millis: 60000
socket-timeout-millis: 60000
routes:
customer-service:
path: /customer-api/**
serviceId: shopping-customer-service
order-service:
path: /order-api/**
serviceId: shopping-order-service
auth-service:
path: /auth-api/**
serviceId: shopping-auth-service
Registration and discovery is taken care by the HashiCorp’s Consul. During the startup of the individual services, they register with service registration service those details such as host name, port etc. by which the services can be accessed. Once the service is registered to the consul, consul checks for the health of the service by sending a heartbeat for the health check path and health check interval that has been registered with Consul. Requests to the micro-services has to be routed through shopping-api-gateway during with the shopping-api-gateway contacts discovery service to get the information required to send the request to the intended microservice.
Consul Configuration for microservices to register:
# CONSUL CONFIGURATION
spring:
profiles: dev
cloud:
consul:
host: consul
port: 8500
discovery:
hostname: shopping-customer-service
instanceId: ${spring.application.name}:${spring.application.instance_id:${random.value}}
healthCheckPath: /actuator/health
healthCheckInterval: 15s
Consul management can be accessed through - http://localhost:8500/ui/
Microservices sample project uses a number of open source projects to work properly:
Follow the steps to bring up the development environment in your local and access the service.