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Performance Testing - Tools, Steps, and Best Practices

KeyCDN

Before you begin tuning your website or application, you must first figure out which metrics matter most to your users and establish some achievable benchmarks. What is Performance Testing? For example, you can use load testing tools to see how your application performs with a certain number of simultaneous users.

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Seamlessly Swapping the API backend of the Netflix Android app

The Netflix TechBlog

To prepare ourselves for a big change in the tech stack of our endpoint, we decided to track metrics around the time taken to respond to queries. After some consultation with our backend teams, we determined the most effective way to group these metrics were by UI screen. This meant that data that was static (e.g.

Latency 233
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Solving CLS Issues In A Next.js-Powered E-Commerce Website (Case Study)

Smashing Magazine

Performance is one of the core aspects to ensure our users are having a delightful user experience irrespective of their devices or network connection. We found out user-centric performance metrics to be the perfect fit for this purpose. We use Lighthouse and WebPagetest as our synthetic testing tools for performance to measure CLS.

Website 106
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Modern Methods For Improving Drupal’s Largest Contentful Paint Core Web Vital

Smashing Magazine

Large preview ) While browsers are generally pretty fast, these steps still take time to load, typically in seconds, and even longer on slower, high-latency network connections. So noticeable, in fact, that Core Web Vitals has a metric all about it called Largest Contentful Paint (LCP). Let’s use that instead of a standard JPG.

Media 73
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Understanding the True Cost of Client-Side A/B Testing

Tim Kadlec

We’re not picking on Optimizely because of anything they do that’s any worse than any other client-side A/B testing solution (all in all, they do pretty well compared to some of the other options I’ve tested), but because of their popularity in the space means this example is likely very relevant to many folks reading this.

Testing 137
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Performance Game Changer: Browser Back/Forward Cache

Smashing Magazine

WebPageTest is one of the few web performance testing tools that actually tests a reload of the page using a primed HTTP Cache — most of the other tools just flag if your HTTP resources are not explicitly set to be cached. Back/Forward Cache Testing Tool. The HTTP Cache is a disk cache.

Cache 91
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Common Challenges in Continuous Testing

Testsigma

You can make changes to the tool/framework to get desired behaviour, but that is a costly affair in terms of resources. You are now investing your resources to evolve the tool/framework rather than the product. Lack of Faster Feedback Loops: To leverage Continuous Testing, it is important to incorporate feedback on an on-going basis.

Testing 69