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What is synthetic testing?

Dynatrace

Also called continuous monitoring or synthetic monitoring , synthetic testing mimics actual users’ behaviors to help companies identify and remediate potential availability and performance issues. Availability testing Availability testing helps organizations confirm that a site or application is responding to user requests.

Testing 208
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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? What Are the Benefits of Performance Testing? There are many common issues that performance testing can uncover, such as bottlenecks.

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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. Replay Testing Enter replay testing.

Latency 233
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Tutorial: Guide to automated SRE-driven performance engineering

Dynatrace

Let me walk you through how I have built my Dynatrace Performance Insights Dashboard showing SLIs split by Test Name as well as SLIs for the specific technology and infrastructure: Enriching your load testing scripts with meta data allows building test context specific SLI-dashboards in Dynatrace. SimpleNodeJsService.

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

Tim Kadlec

WebPageTest’s blocking feature lets us block all calls to optimizely.com so we can test the impact. When I did that, the result was a significant improvement in the paint metrics. In practice, were you doing this to your own site, you would hopefully have some data about how performance impacts your own business metrics.

Testing 137
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Automated Deployment and Architectural Validation with Pitometer and keptn!

Dynatrace

Introducing Pitometer: Metrics-based Deployment Validation in your CI/CD. The following shows how to evaluate a deployment score based on metrics from Prometheus and Dynatrace. Pitometer is used to validate a deployment after it was successfully tested based on the defined testing strategy. Pitometer is a Node.js

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The State Of Mobile And Why Mobile Web Testing Matters

Smashing Magazine

These days, with mobile traffic accounting for over 50% of web traffic , it’s fair to assume that the very first encounter of your prospect customers with your brand will happen on a mobile device. However, there are quite a few high-profile case studies exploring the impact of mobile optimization on key business metrics.

Mobile 135