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Consul vs SkyDNS: What are the differences?

# Introduction
This Markdown code provides a comparison of key differences between Consul and SkyDNS, two popular service discovery tools used in modern cloud environments.

1. **Protocol Support**: Consul supports both DNS and HTTP interfaces for service discovery, making it versatile for different applications and environments. SkyDNS, on the other hand, primarily relies on DNS for service discovery, which may limit its compatibility with certain protocols or applications.

2. **Consistency**: Consul uses a consistent key-value store to maintain service discovery data, ensuring that all nodes have the most up-to-date information. SkyDNS, while reliable, may face occasional consistency issues due to its distributed nature and reliance on DNS.

3. **Health Checking**: Consul provides built-in health checking functionalities, allowing services to check the status of their dependencies and react accordingly. SkyDNS lacks this native health checking feature, requiring additional tools or configurations for monitoring service health.

4. **Clustering**: Consul offers built-in clustering support, enabling easy scalability and high availability for service discovery across multiple nodes. SkyDNS, while capable of clustering, may require more manual configuration and management to achieve similar levels of scalability.

5. **WAN Federation**: Consul comes with robust WAN federation capabilities, facilitating service discovery across multiple data centers or cloud regions seamlessly. SkyDNS, on the other hand, may require additional configurations or extensions to achieve the same level of WAN federation.

6. **Community Support**: Consul has a larger and more active community of developers and users, providing extensive documentation, support, and resources for troubleshooting. SkyDNS, while widely used, may have a smaller community presence, leading to potential challenges in finding help or resources when needed.

In Summary, the key differences between Consul and SkyDNS lie in their protocol support, consistency, health checking capabilities, clustering features, WAN federation support, and community backing.
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Pros of Consul
Pros of SkyDNS
  • 61
    Great service discovery infrastructure
  • 35
    Health checking
  • 29
    Distributed key-value store
  • 26
  • 23
  • 12
  • 10
    Token-based acls
  • 6
    Gossip clustering
  • 5
    Dns server
  • 4
    Not Java
  • 1
    Docker integration
  • 1
  • 2
    Srv discovery for etcd

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What is Consul?

Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.

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 Consul?
What companies use SkyDNS?
See which teams inside your own company are using Consul or SkyDNS.
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What tools integrate with Consul?
What tools integrate with SkyDNS?
    No integrations found

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    Blog Posts

    What are some alternatives to Consul and SkyDNS?
    etcd is a distributed key value store that provides a reliable way to store data across a cluster of machines. It’s open-source and available on GitHub. etcd gracefully handles master elections during network partitions and will tolerate machine failure, including the master.
    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.
    Map services to arbitrary URLs in a single, declarative YAML file. Configure routes with CORS support, circuit breakers, timeouts, and more. Replace your Kubernetes ingress controller. Route gRPC, WebSockets, or HTTP.
    Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions.
    Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. Redis provides data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes, and streams.
    See all alternatives