/microservices-architecture

Primary LanguageJava

Spring MicroServices

Overview

Implementation microservices using Spring Cloud.

  • Establishing Communication between Microservices
  • Centralized Microservice Configuration with Spring Cloud Config Server
  • Spring Cloud Bus to exchange messages about Configuration updates
  • Communication with other Microservices using Feign REST Client
  • Implementation client side load balancing with Ribbon
  • Implementation dynamic scaling using Eureka Naming Server and Ribbon
  • Implementation API Gateway with Zuul
  • Implementation Distributed tracing with Spring Cloud Sleuth and Zipkin
  • Implementation Fault Tolerance with Zipkin

Installing Tools

Installing Rabbit MQ

Windows

Mac

Ports

Application Port
Limits Service 8080, 8081, ...
Spring Cloud Config Server 8888
Currency Exchange Service 8000, 8001, 8002, ..
Currency Conversion Service 8100, 8101, 8102, ...
Netflix Eureka Naming Server 8761
Netflix Zuul API Gateway Server 8765
Zipkin Distributed Tracing Server 9411

URLs

Application URL
Limits Service http://localhost:8080/limits POST -> http://localhost:8080/actuator/refresh
Spring Cloud Config Server http://localhost:8888/limits-service/default http://localhost:8888/limits-service/dev
Currency Converter Service - Direct Call http://localhost:8100/currency-converter/from/USD/to/INR/quantity/10
Currency Converter Service - Feign http://localhost:8100/currency-converter-feign/from/EUR/to/INR/quantity/10000
Currency Exchange Service http://localhost:8000/currency-exchange/from/EUR/to/INR http://localhost:8001/currency-exchange/from/USD/to/INR
Eureka http://localhost:8761/
Zuul - Currency Exchange & Exchange Services http://localhost:8765/currency-exchange-service/currency-exchange/from/EUR/to/INR http://localhost:8765/currency-conversion-service/currency-converter-feign/from/USD/to/INR/quantity/10
Zipkin http://localhost:9411/zipkin/
Spring Cloud Bus Refresh http://localhost:8080/bus/refresh

Zipkin Installation

Quick Start Page

Downloading Zipkin Jar

Command to run

RABBIT_URI=amqp://localhost java -jar zipkin-server-2.5.2-exec.jar

VM Argument

-Dserver.port=8001

Commands

mkdir git-configuration-repo
cd git-configuration-repo/
git init
git add -A
git commit -m "first commit"

Spring Cloud Configuration

spring.cloud.config.failFast=true

More Reading about Microservices