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Microservice_IMP.md

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-Dspring.profiles.active=staging java -jar application.jar --spring.profiles.active=cloud --spring.config.location=c:\config

java -jar application.jar --spring.profiles.active=cloud

mvn package -DskipTests mvn package -Dmaven.test.skip=true mvn clean install -Dspring.profiles.active=peer1

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LOCATION TRANSPARANCY

	Naming Server (Eureka) 
# Service Discoveries:
	  NetFlix Eureka
	  HashiCorp Consul
	  Apache Zookeeper

Eureka Server Discovery :

CartService Eureka Client ===> Service Registry Eureka Server ===> ProducetService Eureka Client 
CartService Eureka Client ===> Product Service Eureka Client  ===> ProducetService Eureka Client 

Note1: eureka server Start :
           http://localhost:8761/

HashiCorp Consul Discovery Agent :(It is Go Language)

       http://localhost:8500/ui/dc1/services

Zookeeper:

zookeper Discovery Agent

 zkServer.sh start
 Then zkCli.sh 


       http://localhost:7081

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LOAD DISTRIBUTION

Ribbon (Client Side)

#VISIBILITY AND MONITORING Zipkin Distributed Tracing Netflix API Gateway

#FAULT TOLERANCE Hystrix

CENTRALIZED CONFIGURATION && MANAGEMENT

Spring Cloud Config Server

RESPONSE STATUS

200 - SUCCESS
404 - RESOURCE NOT FOUND
400 - BAD REQUEST
201 - CREATED
401 - UNAUTHORIZED
500 - SERVER ERROR

MicroService Commuication through

Rest Template and Feign Client

Dynamic Routing and Load Balcing using

Spring Cloud Ribbon

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NetFlix Zuul API Gateway

Desktop ---> API Gateway ---> Product Service && Cart Service Mobile ---> API Gateway

i. Reduce RoundTrips ii. Secuirty iii. Service Discovery integration iv. Cross cutting Concerns v. Load Balancing vi. Caching the reponse vii. Dynamic Routing viii. Static response handing ix Rate Limiting and throuthing

API Gateways:

i. Netflix Zuul API Gateway ii. Spring Cloud Gateway iii. Apigee iv. Amazon AWS API gateway v. Azure API Gateway vi. Google Cloud Endpoints vii. Express API Gateway

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Circuit Breaker

Monitoring : Netflix Hystrix Dashboard and Turbine

Circuit Breker Implemenations:

i.Netflix Hystrix (Not using) ii. Resilence4j (Using) iii. Sentinel (using) iv. Spring Retry

HYstrix Dashboard required : @EnableCircuitBreaker

http://192.168.0.3:8695/hystrix URL : http://192.168.0.3:8695/actuator/hystrix.stream http://192.168.0.3:8695/hystrix/monitor?stream=http%3A%2F%2F192.168.0.3%3A8695%2Factuator%2Fhystrix.stream Enter: http://192.168.0.3:8695/addMycart/12

TurbineStream :

http://192.168.0.3:8695/hystrix http://192.168.0.3:8095/turbine.stream

Distributed Tracing: using Sleuth and Zipkin Server

Spring Cloud Seluth :

Spring Cloud Sleuth 
SPring Cloud Sleuth Logs are printed in the folloing format 
  [ TraceID, SpanId, ZipKin ]

Zipkin

Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in service architectures.

Features include both the collection and lookup of this data.
http://localhost:9411/zipkin

http://localhost:9411/zipkin/?serviceName=cartservice&spanName=all&lookback=3600000&startTs=1586642229946&endTs=1586645829946&annotationQuery=&minDuration=&limit=10&sortOrder=duration-desc