Ecommerce Microservices Architecture

A complete ecommerce demo Implement based on Microservice Architecture Pattern using Spring Boot, Spring Cloud, Spring WebFlux, Postgresdb and Docker.

Abstract

In this project I didn't built independent microservices But i implemented microservices share the same database Why? Because I want to use database tools like ACID transactions, joins, bulk files imports, ... instead of network overhead for interprocess communication between microservices. I worked in a large project implemented based on microservices architecture we have a set of independent services and I used Spring Cloud Open Feign for inter-process communication (Which uses client side load balancer ribbon)

I'm planning to implement another version from project with independent microservices and communicate via feign.

I have split services into two types system and logical services.

Features

Secured, Authorized and Paginated endpoints.

Functional services

Authentication Service

Authorization Server for all other services which grants OAuth2 tokens for the backend resource services. All other secured services must set jwk uri for endpoint implemented on this service.

   security:
     oauth2:
       resourceserver:
         jwt:
           jwk-set-uri: ${JWKS_URL}

Endpoints

Method	Path	Description	User authenticated
GET	/.well-known/jwks	System endpoint to get JSON Web Key Set (JWKS) is a set of keys containing the public keys that should be used to verify JWT token
POST	/user/merchant	Register new merchant account (with merchant role)
POST	/user/client	Register new client account (with client role)
GET	/user	Get current login user information	×

Product Service

Manage products information and inventory Endpoints

Method	Path	Description	User authenticated	Role
GET	/list?page={page}&pageSize={pageSize}	Get all products	x	any
GET	/list/merchant?page={page}&pageSize={pageSize}	Get products created by merchant	x	merchant,admin
POST	/save	Create new product	x	merchant
PUT	/save	Update existing product	x	merchant
GET	/list/available?page={page}&pageSize={pageSize}	Get available products with inventory > 0	×	any
GET	/list/not-available?page={page}&pageSize={pageSize}	Get available products with inventory = 0	×	any

Order Service

Manage products information and inventory Endpoints

Method	Path	Description	User authenticated	Role
GET	/list/user?page={page}&pageSize={pageSize}	Get login user orders	x	any
GET	/{orderId}	Get order by id	x	any
POST	/save	Create new order	x	client
PUT	/save	Update existing order	x	client

System Services

Core service to implement Netflix OSS design architecture and Services token security

Config Service

Provides configuration for all other services (centralize configuration for all services).
Details: Spring Cloud Config

Discovery Service

It allows automatic detection of network locations for service instances, which could have dynamically assigned addresses because of auto-scaling, failures and upgrades (Every service register in this service after running).
Details: Spring Cloud Netflix
Eureka server url: http://localhost:2222/

Gateway Service

Provide a proxy (routing) and client side load balancing via ribbon You can deploy multiple services for the same service and gateway will load balancing between them ( Simple scalability ) Details: Spring Cloud Gateway

Migration Service

Migrations service handle changes on database tables using flyway
To apply change on database please create file in this folder ecommerce-microservices/storage/migration/src/main/resources/flyway/migrations in this structure *__*.sql then apply this command

cd ecommerce-microservices/storage/migration # change it to your path
mvn clean package
docker-compose build
docker-compose up migration

Monitoring

Not completed require implement turbine service and any broker service (rabbitmq) But you can access start page from http://localhost:8000/hystrix

Run Project

Install maven and docker

mvn clean install 
docker-compse build
docker-compse up

# on the first run or after update sql migration on migration service
docker-compose up migration

Probably you got issues because docker caching refresh docker images by:

docker rm $(docker ps -a -q) -f
docker volume prune

Endpoints Documentations

Endpoints Docs

Contributions are welcome!

greatly appreciate your help. Feel free to suggest and implement improvements.