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Consul vs Eureka: What are the differences?

Consul: A tool for service discovery, monitoring and configuration. Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable; Eureka: AWS Service registry for resilient mid-tier load balancing and failover. 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.

Consul and Eureka can be categorized as "Open Source Service Discovery" tools.

"Great service discovery infrastructure" is the primary reason why developers consider Consul over the competitors, whereas "Easy setup and integration with spring-cloud " was stated as the key factor in picking Eureka.

Consul and Eureka are both open source tools. It seems that Consul with 16.2K GitHub stars and 2.82K forks on GitHub has more adoption than Eureka with 7.88K GitHub stars and 2.16K GitHub forks.

Slack, SendGrid, and Oscar Health are some of the popular companies that use Consul, whereas Eureka is used by Notify-e, Swingvy, and LabNetwork. Consul has a broader approval, being mentioned in 131 company stacks & 52 developers stacks; compared to Eureka, which is listed in 7 company stacks and 14 developer stacks.

What is Consul?

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

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.

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      What are some alternatives to Consul and Eureka?
      etcd
      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.
      Zookeeper
      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.
      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: http://blog.gopheracademy.com/skydns).
      Ambassador
      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
      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.
      See all alternatives
      Decisions about Consul and Eureka
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      How developers use Consul and Eureka
      Avatar of Chris Hartwig
      Chris Hartwig uses ConsulConsul

      All our services use Consul for discovery, configuration and cluster management (auto scaling, health monitoring, dynamic reconfiguration, leader elections)

      Avatar of Tom Staijen
      Tom Staijen uses ConsulConsul

      Discovery service. Some configuration is stored in consul.

      Avatar of Robert Hao
      Robert Hao uses ConsulConsul

      I used Consul as config center & service discoverer.

      Avatar of Ismael Arenzana
      Ismael Arenzana uses ConsulConsul

      How else do you discover microservices? ;)

      Avatar of exana
      exana uses ConsulConsul

      For service discovery.

      How much does Consul cost?
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