Understanding Pod drawbacks and their solutions

As we reviewed in the previous chapter, Chapter 3, Running Application Containers on Kubernetes, a Pod in Kubernetes is an instance of one or more application containers that run on a node. Creating just one Pod is enough to run an application the same way you would in any other container.

That being said, using a single Pod to run an application ignores many of the benefits of running containers in the first place. Containers allow us to treat each instance of our application as a stateless item that can be scaled up or down to meet demand by spinning up new instances of the application.

This has the benefits of both allowing us to scale our application easily and making our application more available by providing multiple instances of our application at a given time. If one of our instances crashes, the application will still continue to function, and will automatically scale to pre-crash levels. The way we do this on Kubernetes...