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2023 Black Friday and Cyber Monday retail and e-commerce IT performance observations

Dynatrace

Social media was relatively quiet, and as always, the Dynatrace Insights team was benchmarking key retailer home pages from mobile and desktop perspectives. This had the effect of dramatically speeding up its performance and reducing support costs. This type of issue would definitely affect conversion rates on a retail site.

Retail 223
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Measure What You Impact, Not What You Influence

CSS Wizardry

As I see it, there are two main issues when it comes to measuring performance changes (note, not improvements , but changes) in the lab: Site-speed is nondeterministic 1. We can take reasonable measures (always refresh from a cold cache; throttle to a constant network speed), but we can’t account for everything. Isolate Your Impact.

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New web performance insights with additional metrics and enhanced Visually complete for synthetic monitors

Dynatrace

These metrics are tightly connected to the perceived load speed of your application. This is definitely a great starting benchmark against which to optimize your application. However, the downside of calculating Visually complete based on DOM changes is that it’s definitely a lot more complex.

Metrics 217
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How to use Server Timing to get backend transparency from your CDN

Speed Curve

Looking at the industry benchmarks for US retailers , four well-known sites have backend times that are approaching – or well beyond – that threshold. Pagespeed Benchmarks - US Retail - LCP When you examine a waterfall, it's pretty obvious that TTFB is the long pole in the tent, pushing out render times for the page.

Servers 57
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Average Page Load Times for 2020 – Are you faster?

MachMetrics

As you know, there are many metrics that determine a website’s page speed, and we can’t look at just one of them to determine how performant our site is. By analyzing the data from Backlinko.com and their Page Speed Stats article, we’ll look to answer these questions: What size should be a website be?

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An Opinionated Guide to Performance Budgets

Speed Curve

Throughout this post I've used examples from our public Industry Benchmarks dashboard , which I'd encourage you to check out so that you can explore these metrics on your own. In an ideal world, pages served to mobile devices should be under 1 MB – and definitely not more than 2 MB – but I often see pages in excess of 5 MB.

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Optimizing Video For Size And Quality

Smashing Magazine

A video with large dimensions or a high bitrate will take longer to download and will require a higher speed network to play back smoothly. Bitrate is the playback speed of the video. However, all the other connections have a downlink speed that’s significantly lower than 20 MBPS. There is a solution though! Large preview ).

Network 143