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A comment on The Basics: Kubernetes, Mesosphere, and Docker Swarm. Parent comment

Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by snambi on Thursday February 16, 2017 @12:27AM (#13657940)
etcd itself cannot be horizontally scaled because of the architecture. etcd's leader model cannot allow you to go beyond a certain number of nodes in cluster. The leader would be overloaded.
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Re:The Basics: Kubernetes, Mesosphere, and Docker Swarm by untoreh on Friday February 17, 2017 @05:47AM (#13667353)
I think federation allows to scale horizontally above the limitation of a single etcd cluster. OTOH The fact that zk/etcd/consul are all leader-based is probably the reason flynn "simply" uses postgres
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