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Diego Riccioly
Diego Riccioly

Downloading and Running Spring Cloud Netflix Eureka Server with Maven


How to Download and Use Spring Cloud Starter Netflix Eureka Server Jar




Spring Cloud Netflix Eureka Server is a popular solution for service discovery and registration in microservices architecture. It allows services to find and communicate with each other without hard-coding the hostname and port. It also provides a web dashboard to monitor and manage the registered services.


In this article, we will learn how to download and use spring-cloud-starter-netflix-eureka-server jar to create a Eureka server application and a Eureka client application. We will also explore some of the features and benefits of using Eureka server for service discovery and registration. Finally, we will look at some of the alternatives to Eureka server in case you want to try something different.




spring-cloud-starter-netflix-eureka-server jar download


Download File: https://www.google.com/url?q=https%3A%2F%2Ft.co%2F5F1qr666jZ&sa=D&sntz=1&usg=AOvVaw3dkM_APLNWumPf5q1oNOdg



Introduction




What is Spring Cloud Netflix Eureka Server




Spring Cloud Netflix Eureka Server is a project that provides Netflix OSS integrations for Spring Boot applications. It enables you to quickly set up a service registry that can be used by other microservices in your system. A service registry is a central place where all the services register themselves and discover other services.


Eureka server is based on the Netflix Eureka project, which is an open source implementation of a service registry. Netflix uses Eureka server to manage its large-scale distributed systems with thousands of services.


Why use it for service discovery and registration




Service discovery and registration are essential components of microservices architecture. They allow services to dynamically locate and communicate with each other without relying on static configuration or DNS. This makes the system more resilient, scalable, and adaptable to changes.


Eureka server provides a simple and effective way to implement service discovery and registration in your microservices system. It has several advantages over other solutions, such as:


  • It is easy to set up and use with Spring Boot and Spring Cloud.



  • It supports both client-side and server-side load balancing.



  • It has a built-in health check mechanism that automatically removes unhealthy instances from the registry.



  • It has a web dashboard that shows the status and information of all registered services.



  • It is highly available and fault-tolerant, as it can replicate its state across multiple nodes.



What are the main features and benefits




Eureka server has many features that make it a powerful tool for service discovery and registration. Some of the main features are:


  • Self-registration: Services can register themselves with Eureka server by providing their metadata, such as name, host, port, health endpoint, etc. They can also update their status periodically by sending heartbeat messages to the server.



  • Discovery: Services can discover other services by querying Eureka server for their metadata. They can also cache the metadata locally for faster access and reduced network traffic.



  • Load balancing: Services can use Eureka server to perform client-side or server-side load balancing. Client-side load balancing means that the client chooses which instance of a service to call based on some criteria, such as round-robin or availability. Server-side load balancing means that the server redirects the client request to an appropriate instance of a service based on some criteria, such as load balancing or latency. Eureka server supports both types of load balancing by integrating with other Spring Cloud projects, such as Spring Cloud LoadBalancer, Spring Cloud OpenFeign, and Spring Cloud Gateway.



  • Health check: Eureka server can monitor the health of the registered services by checking their health endpoints. If a service fails to send a heartbeat message or responds with an error, Eureka server will mark it as down and remove it from the registry. This ensures that only healthy instances are available for discovery and load balancing.



  • Dashboard: Eureka server provides a web dashboard that displays the status and information of all registered services. You can use the dashboard to view the details of each service, such as name, host, port, health, metadata, etc. You can also use the dashboard to manually register or unregister services, or to force a refresh of the registry.



  • Replication: Eureka server can replicate its state across multiple nodes to achieve high availability and fault tolerance. You can configure Eureka server to run in a peer-to-peer mode, where each node acts as both a client and a server. In this mode, each node registers itself with other nodes and shares its registry information with them. This way, if one node goes down, the other nodes can still function normally.



Prerequisites




To follow this tutorial, you will need the following:


  • Java 8 or later: You will need Java 8 or later to run Spring Boot and Spring Cloud applications. You can download Java from .



  • Maven or Gradle: You will need Maven or Gradle to build and manage your project dependencies. You can download Maven from .



  • Spring Boot 2.5 or later: You will need Spring Boot 2.5 or later to create and run your applications. You can use Spring Initializr to generate a Spring Boot project with the required dependencies.



  • Spring Cloud 2020.0.3 or later: You will need Spring Cloud 2020.0.3 or later to use Spring Cloud Netflix Eureka Server and other Spring Cloud projects. You can add the Spring Cloud BOM to your project to manage the versions of Spring Cloud dependencies.



Creating a Eureka Server Application




In this section, we will create a simple Eureka server application that will act as a service registry for our microservices system. We will use Spring Boot and Spring Cloud to create and run the application.


spring-cloud-starter-netflix-eureka-server maven dependency


spring-cloud-starter-netflix-eureka-server example


spring-cloud-starter-netflix-eureka-server configuration


spring-cloud-starter-netflix-eureka-server tutorial


spring-cloud-starter-netflix-eureka-server github


spring-cloud-starter-netflix-eureka-server version


spring-cloud-starter-netflix-eureka-server properties


spring-cloud-starter-netflix-eureka-server annotation


spring-cloud-starter-netflix-eureka-server bootstrap.yml


spring-cloud-starter-netflix-eureka-server application.yml


spring-cloud-starter-netflix-eureka-server gradle


spring-cloud-starter-netflix-eureka-server docker


spring-cloud-starter-netflix-eureka-server port


spring-cloud-starter-netflix-eureka-server ssl


spring-cloud-starter-netflix-eureka-server authentication


spring-cloud-starter-netflix-eureka-server cloud config


spring-cloud-starter-netflix-eureka-server zuul


spring-cloud-starter-netflix-eureka-server ribbon


spring-cloud-starter-netflix-eureka-server hystrix


spring-cloud-starter-netflix-eureka-server feign


spring-cloud-starter-netflix-eureka-server actuator


spring-cloud-starter-netflix-eureka-server swagger


spring-cloud-starter-netflix-eureka-server logging


spring-cloud-starter-netflix-eureka-server metrics


spring-cloud-starter-netflix-eureka-server health check


spring-cloud-starter-netflix-eureka-server load balancing


spring-cloud-starter-netflix-eureka-server heartbeat interval


spring-cloud-starter-netflix-eureka-server registration policy


spring-cloud-starter-netflix-eureka-server peer replication


spring-cloud-starter-netflix-eureka-server self preservation mode


spring-cloud-starter-netflix-eureka-server client cache refresh interval


spring-cloud-starter-netflix-eureka-server client retry mechanism


spring-cloud-starter-netflix-eureka-server client service url default zone


spring-cloud-starter-netflix-eureka-server client instance id format


spring-cloud-starter-netflix-eureka-server client prefer ip address option


spring-cloud-starter-netflix-eureka-server client fetch registry option


spring-cloud-starter-netflix-eureka-server client register with eureka option


spring-cloud-starter-netflix-eureka-server client metadata map option


spring-cloud-starter-netflix-eureka-server client lease duration option


spring-cloud-starter-netflix-eureka-server client lease renewal interval option


Adding the dependency




The first step is to add the spring-cloud-starter-netflix-eureka-server dependency to our project. This dependency will pull in all the required libraries and dependencies for Eureka server.


If you are using Maven, add the following dependency to your pom.xml file:


<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency>


If you are using Gradle, add the following dependency to your build.gradle file:


implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-server'


Enabling the annotation




The next step is to enable the @EnableEurekaServer annotation on our main application class. This annotation will activate the Eureka server configuration and functionality in our application.


Add the following annotation to your main application class:


@EnableEurekaServer @SpringBootApplication public class EurekaServerApplication public static void main(String[] args) SpringApplication.run(EurekaServerApplicatio


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