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Eureka vs SkyDNS: What are the differences?

## Introduction
Eureka and SkyDNS are commonly used service discovery tools in microservices architecture. 

1. **Deployment**:
Eureka is typically deployed alongside other Netflix OSS components which can provide additional functionality like load balancing and circuit-breaking, while SkyDNS is more lightweight and designed for simple service discovery without additional features.

2. **Integration with Container Orchestration Platforms**:
Eureka has better integration with container orchestration platforms like Kubernetes, Docker Swarm, and Mesos, allowing services to register and discover each other seamlessly within these environments. SkyDNS might require additional configuration and setup for optimal integration in such platforms.

3. **Protocol Support**:
Eureka primarily uses REST for communication between clients and the service registry, while SkyDNS uses DNS-based service discovery where clients query a DNS server to resolve service names to IP addresses. This difference in protocols can affect how services communicate and discover each other.

4. **Scalability**:
Eureka is known for its ability to scale horizontally by adding more instances to handle a large number of service registrations and queries, making it suitable for large-scale deployments. Meanwhile, SkyDNS may face scalability challenges when dealing with a high volume of service discovery requests.

5. **Monitoring and Metrics**:
Eureka provides built-in monitoring and metrics capabilities, offering insights into the health and performance of the service registry, whereas SkyDNS may require additional tools or configurations for monitoring and metrics collection, potentially leading to more setup overhead.

6. **Community Support**:
Eureka has a robust community of users and contributors due to its association with Netflix, providing extensive documentation, support forums, and continuous updates. SkyDNS, while widely used, may have a smaller community and fewer resources available for troubleshooting and support.

In Summary, Eureka and SkyDNS differ in deployment options, integration with container orchestration platforms, protocol support, scalability, monitoring capabilities, and community support in the context of service discovery in microservices architecture.
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Pros of Eureka
Pros of SkyDNS
  • 21
    Easy setup and integration with spring-cloud
  • 9
    Web ui
  • 8
  • 8
    Health checking
  • 7
    Circuit breaker
  • 6
    Netflix battle tested components
  • 6
    Service discovery
  • 4
    Open Source
  • 2
    Srv discovery for etcd

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What is Eureka?

Eureka is a REST (Representational State Transfer) based service that is primarily used in the AWS cloud for locating services for the purpose of load balancing and failover of middle-tier servers.

What is SkyDNS?

SkyDNS is a distributed service for announcement and discovery of services. It leverages Raft for high-availability and consensus, and utilizes DNS queries to discover available services. This is done by leveraging SRV records in DNS, with special meaning given to subdomains, priorities and weights (more info here:

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What companies use Eureka?
What companies use SkyDNS?
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What tools integrate with Eureka?
What tools integrate with SkyDNS?
    No integrations found
    What are some alternatives to Eureka and SkyDNS?
    Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.
    It is the front door for all requests from devices and websites to the backend of the Netflix streaming application. As an edge service application, It is built to enable dynamic routing, monitoring, resiliency, and security. Routing is an integral part of a microservice architecture.
    A centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications.
    JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
    Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
    See all alternatives