Merge pull request cncf#172 from fturib/graduation-coredns

CoreDNS application for Graduated project

reviews/graduation-coredns.md

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+
+# CoreDNS Graduation Application
+
+CoreDNS joined CNCF in March 2017 as inception project and graduated as incubation project on February 2018
+
+It has grown significantly over time in maturity and user base, both as a DNS Server available in Cloud Native environment and as a key component of Kubernetes project:
+- In Fall 2017, CoreDNS was proposed to become a DNS Discovery Service for Kubernetes.
+- First version as alpha feature was released in v1.9 of Kubernetes - Dec 2017
+- CoreDNS is considered the “default” DNS Discovery Service for Kubernetes v1.13 - to be released in Dec 2018
+
+The following application links to the required information to become a graduated project.
+
+## CoreDNS fulfills all the incubating and graduation criteria:
+
+### Document that it is being used successfully in production by at least three independent end users which, in the TOC’s judgement, are of adequate quality and scope.
+
+* **SoundCloud** uses CoreDNS as internal cache+proxy in Kubernetes clusters to handle hundreds of thousands DNS service discovery requests per second.
+* **Infoblox** uses CoreDNS in its Active Trust Cloud SaaS service, as well as for Kubernetes cluster DNS.
+* **Admiral** uses CoreDNS to handle geographic DNS requests for our public-facing microservices.
+* **Qunar** uses CoreDNS for service discovery of its GPU machine learning cloud with TensorFlow and Kubernetes.
+* **Tradeshift** uses CoreDNS to look up company identifiers across multiple shards/regions/zones
+* **AdGuard** uses CoreDNS in AdGuard Home and, therefore, in production public AdGuard DNS servers.
+* **Bose, Zalando, Yandex, Hellofresh, Sodimac, Kismia [and many others](https://github.com/coredns/coredns/blob/master/ADOPTERS.md)** use CoreDNS for their production's Kubernetes Cluster
+
+
+* On Kubernetes side, from [a recent CNCF Survey](https://docs.google.com/forms/d/e/1FAIpQLSehsvd0n2HKnPEifukNHej4gMBrXe2saJOmxAmPq34dTGMWKA/viewanalytics), 50% deployments of cluster are using CoreDNS as the DNS discovery service
+
+
+### Have a healthy number of committers. A committer is defined as someone with the commit bit; i.e., someone who can accept contributions to some or all of the project.
+
+CoreDNS currently has 16 maintainers.
+They are listed as ‘approvers’ on our [OWNER document](https://github.com/coredns/coredns/blob/master/OWNERS)
+
+### Demonstrate a substantial ongoing flow of commits and merged contributions.
+
+More than [100+ contributors](https://github.com/coredns/coredns/graphs/contributors) and 12 [releases](https://coredns.devstats.cncf.io/d/3/community-stats?orgId=1&var-period=d&var-repo_name=CoreDNS) since incubation graduation
+
+### Have committers from at least two organizations.
+
+We currently have [16 maintainers](https://github.com/coredns/coredns/blob/master/OWNERS).
+Most of them are contributing in their spare time; but, considering organizations, 4 maintainers are working for 2 distinct companies
+
+### Have achieved and maintained a Core Infrastructure Initiative Best Practices Badge.
+
+https://bestpractices.coreinfrastructure.org/en/projects/1250
+
+### Adopt the CNCF Code of Conduct.
+
+https://github.com/coredns/coredns/blob/master/CODE-OF-CONDUCT.md
+
+### Explicitly define a project governance and committer process. This preferably is laid out in a GOVERNANCE.md file and references an OWNERS.md file showing the current and emeritus committers.
+
+https://github.com/coredns/coredns/blob/master/GOVERNANCE.md
+
+### Have a public list of project adopters for at least the primary repo (e.g., ADOPTERS.md or logos on the project website).
+
+https://github.com/coredns/coredns/blob/master/ADOPTERS.md