They are intended for use in environments with many users spread across multiple teams, or projects. For clusters with a few to tens of users, you should not need to create or think about `namespaces` at all. Start using `namespaces` when you need the features they provide.
Like a `Deployment`, a `StatefulSet` manages Pods that are based on an identical container spec. Unlike a `Deployment`, a `StatefulSet` maintains a sticky identity for each of their Pods. These pods are created from the same spec, but are not interchangeable: each has a persistent identifier that it maintains across any rescheduling.
`StatefulSets` are valuable for applications that require one or more of the following.
* Stable, unique network identifiers, ex: distributed system, like ElasticSearch
* Stable, persistent storage, ex: MySQL
* Ordered, graceful deployment and scaling
* Ordered, automated rolling updates, ex: MySQL Master+Slave