Book Image

Bootstrapping Service Mesh Implementations with Istio

By : Anand Rai
4 (1)
Book Image

Bootstrapping Service Mesh Implementations with Istio

4 (1)
By: Anand Rai

Overview of this book

Istio is a game-changer in managing connectivity and operational efficiency of microservices, but implementing and using it in applications can be challenging. This book will help you overcome these challenges and gain insights into Istio's features and functionality layer by layer with the help of easy-to-follow examples. It will let you focus on implementing and deploying Istio on the cloud and in production environments instead of dealing with the complexity of demo apps.  You'll learn the installation, architecture, and components of Istio Service Mesh, perform multi-cluster installation, and integrate legacy workloads deployed on virtual machines. As you advance, you'll understand how to secure microservices from threats, perform multi-cluster deployments on Kubernetes, use load balancing, monitor application traffic, implement service discovery and management, and much more. You’ll also explore other Service Mesh technologies such as Linkerd, Consul, Kuma, and Gloo Mesh. In addition to observing and operating Istio using Kiali, Prometheus, Grafana and Jaeger, you'll perform zero-trust security and reliable communication between distributed applications. After reading this book, you'll be equipped with the practical knowledge and skills needed to use and operate Istio effectively.
Table of Contents (19 chapters)
Part 1: The Fundamentals
Part 2: Istio in Practice
Part 3: Scaling, Extending,and Optimizing

Understanding the fundamentals of Wasm

Wasm is a portable binary format designed to run on virtual machines (VMs), allowing it to run on various computer hardware and digital devices, and is very actively used to improve the performance of web applications. It is a virtual instruction set architecture (ISA) for a stack machine designed to be portable, compact, and secure with a smaller binary file size to reduce download times when executed on web browsers. A modern browser’s JavaScript engines can parse and download the Wasm binary format in order of magnitude faster than JavaScript. All major browser vendors have adopted Wasm, and as per the Mozilla Foundation, Wasm code runs between 10% and 800% faster than the equivalent JavaScript code. It provides faster startup time and higher peak performance without memory bloat.

Wasm is also a preferred and practical choice for building extensions for Envoy for the following reasons:

  • Wasm extensions can be delivered at runtime...