Hands-On Microservices with Kubernetes

Performance and security

Performance and security are generally at odds. Security typically pushes toward encryption across the board, outside and inside the cluster. There are strong authentication and authorization methods, may be necessary, but has performance overhead. However, security sometimes indirectly helps performance by advocating to cut unnecessary features and reduce the surface area of the system. This spartan approach that produces tighter systems allows you to focus on a smaller target to improve performance. Typically, secure systems don't just add arbitrary features that can hurt performance without careful consideration.

Later, we will explore how to collect and use metrics with Kubernetes, but first let's take a look ...