MicroService-start

Developing Microservice Project(Doctor-Appoinment) Using Spring-boot [Secured] using OAuth2

Simple Modules

1. Admission
2. Doctor
3. Patient (Resource Server)

Try to find out Answers

• Why Micro-service?
• Why API-Gateway needed?
• Fine, But why config-server?
• Is it necessery to use Hystrix Dashboard?
• Is it secured?

Architechture

• Eureka
• Gateway
• Hystrix
• Hystrix-Dashboard
• API (resources)
• Config Server
• Authorization server and Resource server
• Appointment UI

N.B: OAuth2 used Authorization-Resource server (view jdbc token store)

***Perdon me for mistakes(if any)

Strategy

• Start Eureka-Boss Service
• Then Config-Server, Gateway service
• Then Admission,Doctor,Patient, Hystrix-Dashboard
• LoadBalanced (Implemented before ResTemplate, also in Gateway .yml file [lb] )
• Try to access: http://localhost:8989/admission/allDoctors (8989 for Gateway, URI for accessing Doctors from Admission)
• Dynamic CircuitBreaker pattern added for Admission (as it has Internal API call), also exposed actuator End-point for Hystrix-Dashboard
• For Dashboard: http://localhost:9191/hystrix , then copy target URI (http://localhost:8083/actuator/hystrix.stream) and Hit Monitor Button

Config-server?? What is that??

• Change EndPoint, Values without making any changes in code..Cool
• No need to repeat same Config for all resources over micro-services
• Remember (add a repo, add dependencies, point to config-server uri in bootstrap.yml file)

Challenges

• @Value for reading value from Config-server