How to Emulate Web Traffic Using Standard Load Testing Tools

TL;DR

This paper proposes a new methodology for accurately emulating modern asynchronous web traffic using standard load testing tools, addressing limitations of traditional synchronized testing approaches.

Contribution

It introduces a coherent methodology based on two fundamental principles to better simulate real-world web traffic with existing load testing tools.

Findings

Provides a practical approach for emulating asynchronous web traffic

Addresses inaccuracies caused by traditional load testing assumptions

Enhances the reliability of performance testing results

Abstract

Conventional load-testing tools are based on a fifty-year old time-share computer paradigm where a finite number of users submit requests and respond in a synchronized fashion. Conversely, modern web traffic is essentially asynchronous and driven by an unknown number of users. This difference presents a conundrum for testing the performance of modern web applications. Even when the difference is recognized, performance engineers often introduce modifications to their test scripts based on folklore or hearsay published in various Internet fora, much of which can lead to wrong results. We present a coherent methodology, based on two fundamental principles, for emulating web traffic using a standard load-test environment.