We previously introduced stateless applications. In simple terms, these applications can run independently and completely regardless of where they are deployed, making them easier to scale and maintain. Web applications are a common type of stateless application, where multiple instances can be deployed simultaneously, but users receive the same response regardless of which instance they access.
What is Deployment
Deployments are designed to deploy and manage multiple independent and complete Pods simultaneously, with each Pod running the same application image. This aligns with the characteristics of stateless applications, making Deployments suitable for deploying them.
A Deployment can manage multiple replicas of application Pods. The main benefit is that multiple Pods can work together to improve the application’s processing capacity. Additionally, even if some Pods fail or crash, the other Pods can continue to run, ensuring continuous availability of the service.
Imagine a busy coffee shop with a single barista taking orders and making drinks. Initially, with only a few customers, the barista can handle the orders efficiently. However, as more customers arrive, the single barista becomes overwhelmed, and the wait time for customers increases.
