StatefulSet is a Kubernetes workload API specifically used for managing stateful applications. This is a comprehensive guide to setting up and using StatefulSets, where we look at the following topics:
- What is a StatefulSet, and when should you use it?
- Example: Setting up and running MongoDB as a StatefulSet
- Limitations of StatefulSets and what to watch out for
- Best practices while implementing StatefulSets
Stateless and Stateful Applications
Let's start with distinguishing stateless and stateful applications. A stateless application is one in which every request is treated as a new, isolated transaction independent of any previous transactions. It does not store session-specific data between requests, either on the client side or the server side.