One of the main advantages of using containers with Kubernetes is continuous availability. Rather than taking the whole system down for an update or maintenance, each container – containing specific microservices – can be replaced on the fly. The way developers do that is by preparing a new container for the updated microservices, setting up that container for production, and switching the flow of the app in the configuration.
Continuous availability means you have multiple versions of the same container created at different times. In some cases, different versions are archived or kept running for safety reasons. After a while, you may end up with different versions from the development process. To get started, you must first select the best one to use based on your specific requirements.
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