Istio is a powerful service mesh that provides advanced traffic management, security, and observability features for Kubernetes applications. When starting with Istio, one of the most common challenges teams face is optimizing the resource usage and performance of the Istio Proxy (Envoy) sidecars and Ingress Gateway.

In this post, you'll learn how Istio Proxy works, what factors impact its resource consumption, and how to tune CPU, memory, and concurrency settings for both Ingress Gateway and sidecars.

Whether you're new to Istio or looking to fine-tune your existing setup, this guide provides practical examples and best practices to help you get the most out of Istio in your environment.