Using WebPageTest Web Performance Testing for Novices and Power Users

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Название:Using WebPageTest Web Performance Testing for Novices and Power Users

Автор: Rick Viscomi, Andy Davies, Marcel Duran

Издательство: O'Reilly Media

Год: 2015

Страниц: 214

Язык: English

Формат: epub

Размер: 1,6 Mb

Learn basic and advanced uses of WebPagetest, the performance measurement tool for optimizing websites. This practical guide shows users new to this tool how run tests and interpret results, and helps experienced users gain a better and more thorough understanding of hidden features in WebPagetest that make testing easier.

Written by WebPagetest power users and performance experts, this book will help web developers and frontend engineers solve the problem of slow sites. Topics include:

Basic test setup—shows beginners how to get meaningful results

Advanced test setup—provides another level of technical depth by explaining features not thoroughly documented at webpagetest.org

Analysis of results—helps you understand of how to interpret test results

Private instance setup—teaches power users the intricacies of the webpagetest private instance and how it works

API and external tools—provides a detailed reference for the API and demonstrates tools already using the API to extend WebPagetest

Basic Use Cases

Chapter 1How Fast Is My Page?

Measure What Matters

Synthetic Versus RUM

Chapter 2What’s Slowing Down My Page?

Running a Simple Test

Reading a Waterfall

WebPageTest Grades

Chapter 3Cache Optimization

Enabling Repeat View

Analyzing Cachability

Heuristic Caching

Chapter 4Comparing Tests

Perceived Performance

Capture Video

Filmstrip and Video

Summary of Part I

Intermediate Use Cases

Chapter 5Simulating Real Users

Identifying Demographics

Chapter 6Mobile Testing

Desktop Emulation

Traffic Shaping

Native Devices

Chapter 7Scripting Preconditions

Flow View

Authentication

Chapter 8SPOF Testing

Black-Hole Rerouting

Blocking Requests

Advanced Use Cases

Chapter 9WebPageTest API

Getting Started

Running Tests

Reading the Results

Reading Beyond Results

Chapter 10Continuous Integration

Node.js Wrapper

Asserting Metrics from Test Results

Jenkins Integration

Travis-CI Integration

Chapter 11Private Instances

How Does WebPageTest Work?

Using the Preconfigured AWS AMI

Creating Your Own Local Installation

Private-Instance-Only Features

Day-to-Day Management

Troubleshooting

Contributing Changes to WebPageTest

Appendix API Input/Output Reference Guide

Examples of Test Results

Details of Test Results

Details of Requests In Test Results

API