MS

This project's main aims is to have understanding of frameworks, tools for Microservice development & deployment.

The business functionality of the project is to expose APIs to list down Orders & Customers. Order data is having Order Id ,Customer Id, Transaction Amount. Customer data is having Customer Id, Name, Age.

This project is updated to deprecate/add tools, farmeworks, packages in favour of making project more cloud native, performant and feature rich. Each version captures description of the changes from previous version.

Base Framework & Tools

• Open JDK 11
• Spring Boot Framework
• Maven
• Docker
• Kubernetes [Added in 0.0.2]
• Nginx [Added in 0.0.3]
• H2 (InMemory DB)

Project Modules

• service_config - Centralised Configuration Server
• service_registry - Service Registry [Removed in 0.0.3 - Replaced by Kubernetes Service]
• service_gateway - API Gateway [Removed in 0.0.3 - Replaced by Kubernetes Ingress]
• customer_service - Customer Service
• order_service - Order Service

0.0.3 - Microservices using Spring Boot & Kubernetes , Deployment by Kubernetes

• Kubernetes is used instead of Spring components for below
  • Registry & Discovery using Service instead of Eureka
  • Nginx as Ingress Controller for API Gateway instead Spring Gateway
• Rest Client using RestTemplate instead of Openfiegn
• Namespace ms is used for kubernetes

Microservice Components

	Spring Component	Reference
Service	Spring Web	customer_service, order_service
Config Server	Spring Config Server	service_config
Config Client	Spring Config Client	customer_service, order_service
Service Registry	Kubernetes Service	kubernetes.yml [Project Specific]
Service Discovery	Kubernetes	kubernetes.yml [Project Specific], ms-ingress.yml
Fault Tolerence	Spring Hystrix	order_service
API Gateway	Kubernetes Ingress (Nginx)	ms-ingress.yml
Service Client	Spring Rest Template	order_service
Trace Logging	Spring Sleuth	service_config, customer_service, order_service
Health Monitor	Spring Actuator	service_config, customer_service, order_service

Containerisation

	Component	Reference
Image Build	Spring Maven	service_config, customer_service, order_service
Orchestration	Kubernetes	kubernetes.yml [Project Specific]

Performance

	Jar Size (mB)	Image Size (MB)	Start up Time (s)
service_config	34	282	29
customer_service	47	294	64
order_service	53	301	64

0.0.2 - Microservices using Spring Boot, Deployment by Kubernetes [Only Changed sections are mentioned]

• Removed Instance Size (MB) in Performance Observation
• Orchestration using Kubernetes
• Usage of IPAddress for Eureka Client Instance

Containerisation

	Component	Reference
Image Build	Spring Maven	service_config, service_registry, service_gateway, customer_service, order_service
Orchestration	Kubernetes	kubernetes.yml [Project Specific]

Performance

	Jar Size (mB)	Image Size (MB)	Start up Time (s)
service_config	34	282	83
service_registry	50	297	115
service_gateway	48	295	95
customer_service	64	311	140
order_service	64	313	139

0.0.1 - Microservices using Spring Boot, Deployment by Docker Compose

Microservice Components

	Spring Component	Reference
Service	Spring Web	customer_service, order_service
Config Server	Spring Config Server	service_config
Config Client	Spring Config Client	service_registry, service_gateway, customer_service, order_service
Service Registry	Spring Netflix Eureka Server	service_registry
Service Discovery	Spring Netflix Eureka Client	service_gateway, customer_service, order_service
Fault Tolerence	Spring Hystrix	order_service
API Gateway	Spring Gateway	service_gateway
Service Client	Spring Feign	order_service
Trace Logging	Spring Sleuth	service_config, service_registry, service_gateway, customer_service, order_service
Health Monitor	Spring Actuator	service_config, service_registry, service_gateway, customer_service, order_service

Containerisation

	Component	Reference
Image Build	Spring Maven	service_config, service_registry, service_gateway, customer_service, order_service
Orchestration	Docker Compose	docker-compose.yml

Performance

	Jar Size (mB)	Image Size (MB)	Start up Time (s)
service_config	34	282	25
service_registry	50	297	33
service_gateway	48	295	33
customer_service	64	311	44
order_service	64	313	49