The Netflix TechBlog

NOVEMBER 9, 2021

by Liwei Guo , Ashwin Kumar Gopi Valliammal , Raymond Tam , Chris Pham , Agata Opalach , Weibo Ni AV1 is the first high-efficiency video codec format with a royalty-free license from Alliance of Open Media (AOMedia), made possible by wide-ranging industry commitment of expertise and resources. Video encoding is essentially a search problem?—?the

Media 246

Media Open Source Efficiency Software Engineering 246

MachMetrics

NOVEMBER 21, 2019

When most people test their site speed, they test a single, static page. That works well for testing home pages, or product pages – but what about a checkout process? How do you test more complex, multi-step processes? Testing a page behind a log in. Testing the speed of a checkout process.

Speed 57

Speed Testing Google Tuning 57

Dynatrace

JULY 16, 2021

We have seen users who joined our preview program “speed up their release validation by 90%”. Many of our users are performance engineers using Cloud Automation Quality Gates to automate the analysis of their performance and load tests – saving hours of analysis time for each test they run. 03:24 – Pre-Requisites.

DevOps 241

DevOps Open Source Cloud Azure 241

Speed Curve

DECEMBER 19, 2023

This should do it: I submit the PR with the changes and verify that the deployment was successful in GitHub: Navigating to my SpeedCurve Deployments dashboard, I see that a deploy has automatically been created and it is in queue for testing. I find what I was after when I view the test details for that deployment.

Performance Testing 62

Performance Testing Testing Performance Mobile 62

The Netflix TechBlog

OCTOBER 7, 2021

At Netflix, we have significant investments in ensuring new versions of our applications are well tested. However, Netflix is available for streaming on thousands of types of devices and it is powered by hundreds of micro-services which are deployed independently, making it extremely challenging to comprehensively test internally.

Metrics 197

Metrics Mobile Testing Strategy 197

The Netflix TechBlog

SEPTEMBER 10, 2019

Toby Mao , Sri Sri Perangur , Colin McFarland Another day, another custom script to analyze an A/B test. You can look at ABlaze (our centralized A/B testing platform) and take a quick look at how it’s performing. At any point a Netflix user is in many different A/B tests orchestrated through ABlaze. Not at Netflix.

Metrics 215

Metrics Architecture Infrastructure Innovation 215

Smashing Magazine

MARCH 2, 2021

The State Of Mobile And Why Mobile Web Testing Matters. The State Of Mobile And Why Mobile Web Testing Matters. And to ensure the quality of a product, we always need to test — on a number of devices, and in a number of conditions. Also, there was a 65% increase in video consumption on mobile devices in 2020.

Mobile 135

Mobile Testing Website Benchmarking 135

Speed Curve

JULY 6, 2021

After Google's announcement about Lighthouse 8 this past month, we have updated our test agents. We've gotten a lot of questions about what has changed and the impact on your performance metrics, so here's a summary. In case you missed it, Lighthouse is a speed tool created by the Chrome Developer team at Google. Learn more.

Google 106

Google Metrics Best Practices Speed 106

The Netflix TechBlog

MARCH 6, 2019

It’s used extensively in our media processing platform, which includes services like Archer and runs features like video encoding and title image generation on tens of thousands of Amazon EC2 instances. We are constantly innovating on video encoding technology at Netflix, and we have a lot of content to encode. We have one file?

Media 214

Media Storage Processing Cache 214

Speed Curve

MARCH 12, 2023

Pages - This detailed view gives you trended information for all the metrics you know and love. Tests - We've had a lot of requests for this, so we're happy to deliver it. You can now see a list of your latest synthetic tests and spot any failed tests. Otherwise, the metrics reflected will be from your synthetic data.

Testing 52

Testing Metrics Website Monitoring 52

Alex Podelko

SEPTEMBER 8, 2020

Some time ago Federico Toledo published Performance Testing with Open Source Tools- Busting The Myths. I remember really liking the technical side of these tests. But I must confess I was not too fond of having to report the results to stakeholders or deal with political/personal issues related to (poor) test results.

Open Source 223

Open Source Performance Testing Testing Performance 223

CSS - Tricks

SEPTEMBER 26, 2019

In this week's roundup: fighting shifty layouts, some videos might be a bit stalled, and a new way to take screenshots in Firefox. Paste the following snippet into the “Custom Metrics” on webpagetest.org in field in the Custom tab (under Advanced Settings ) and make sure that a Chrome browser is selected. Let's get into the news!

Website 42

Website Metrics Speed Servers 42

Speed Curve

NOVEMBER 7, 2021

The metrics that comprise Web Vitals are still evolving. These metrics will (I think) always be in a state of evolution. We need to do our best to stay up to date – not just with which metrics to track, but also with what they measure and why they're important. Which performance metrics should you focus on for SEO?

Performance 96

Performance Google Metrics Mobile 96

Speed Curve

JULY 26, 2022

Fixing high-traffic but poorly performing areas of your site will improve your overall metrics – and create a faster, better experience for more of your users. You can then prioritize and focus on these areas to improve important metrics like Largest Contentful Paint. Change summary metrics on your charts.

Testing 52

Testing Performance Metrics Traffic 52

Speed Curve

MAY 1, 2023

If you've invested countless hours in speeding up your pages, but you're not using performance budgets to prevent regressions, you could be at risk of wasting all your efforts. A performance budget is a threshold that you apply to the metrics you care about the most. Which metrics should you start with?

Performance 98

Performance Metrics Media Google 98

Speed Curve

FEBRUARY 15, 2021

Web pages are unbelievably complex, and there are hundreds of different metrics available to track. A performance budget is a threshold that you apply to the metrics you care about the most. This is when you run into three important questions: Which metrics should you focus on? Which metrics should you focus on?

Performance 133

Performance Metrics Benchmarking Google 133

Speed Curve

DECEMBER 21, 2022

Expanded our test agent locations to bring you even more places to test from worldwide. Jumped into in-person events, and were so happy to catch up with some of you at SmashingConf and performance.now() (You can watch videos of my talk about performance budgets and Andy Davies' talk about third parties.). Synthetic Site.

Benchmarking 52

Benchmarking Retail Traffic Metrics 52

Smashing Magazine

JANUARY 11, 2021

LogRocket tracks key metrics, incl. Getting Ready: Planning And Metrics Performance culture, Core Web Vitals, performance profiles, CrUX, Lighthouse, FID, TTI, CLS, devices. Assets Optimizations Brotli, AVIF, WebP, responsive images, AV1, adaptive media loding, video compression, web fonts, Google fonts. Table Of Contents.

Performance 145

Performance Cache Media Metrics 145

Dynatrace

FEBRUARY 10, 2021

Think curbside delivery for groceries, video conferencing for work and school, and telemedicine for doctor visits. Today, the speed of software development has become a key business differentiator, but collaboration, continuous improvement, and automation are even more critical to providing unprecedented customer value.

Cloud 160

Cloud DevOps Speed Metrics 160

MachMetrics

MAY 14, 2020

When we gave a complete overview of the state of the web in 2020 we challenged our readers to compare their own website metrics to the multiple metric averages. This is the inspiration behind this article, which will go into detail on how you can check your website’s page weight with MachMetric’s Page Speed Audit service.

Website 52

Website Testing Speed Cache 52

Speed Curve

JULY 3, 2023

For more than ten years, I've been writing about page bloat, its impact on site speed, and ultimately how it affects your users and your business. Video – For the first time in the many years that I've been covering the topic of page growth, I'm going to focus on the volume of video that pages contain. More on that later.)

Mobile 52

Mobile Google Metrics Retail 52

Dynatrace

JANUARY 13, 2022

Real user monitoring collects data on a variety of metrics. For example, data collected on load actions can include navigation start, request start, and speed index metrics. Real user monitoring works by injecting code into an application to capture metrics while the application is in use. How real user monitoring works.

Monitoring 170

Monitoring Latency Mobile Best Practices 170

Dynatrace

NOVEMBER 19, 2020

The Jenkins to Keptn integration was explained and demoed in one of our Performance Clinic videos; “. Environment interfaces include queries for topology, metrics, problems, and user sessions to name a few. These interfaces also allow toolchains to push problem comments, events, and metrics into Dynatrace for monitored entities.

Software 140

Software Software DevOps Open Source 140

Speed Curve

DECEMBER 1, 2020

Getting up to speed on Core Web Vitals seems to be at the top of everyone's to-do list these days. Each vital metric is represented in its own section of the dashboard, with a current view of where you stand relative to the recommended thresholds. Both of these metrics are represented in the Vitals dashboard.

Education 110

Education Metrics Speed Testing 110

Testsigma

APRIL 13, 2022

Therefore, as a developer and a tester, it becomes a highly responsible job to test these mobile applications and deliver the best quality. However, we understand that if you are in this profession, you probably know all the basic test cases, scenarios and the holes where bugs can be found. Security related scenarios in mobile testing.

Mobile 52

Mobile Social Media Testing Media 52

Speed Curve

OCTOBER 25, 2023

Fighting regressions should be the top priority of anyone who cares about the speed of their site. The best way to fight regressions is to create performance budgets on key metrics, and get alerted when they go out of bounds. Make sure you're tracking the right metrics There are a lot of performance metrics out there!

Benchmarking 62

Benchmarking Metrics Website Monitoring 62

Speed Curve

APRIL 9, 2023

Here's how the update to Lighthouse 10 may affect your metrics. Metrics and scoring weights include the deprecation of Time to Interactive (TTI) and the increase in weight for Cumulative Layout Shift (CLS). It's important to note that the recommended thresholds may still be adjusted, as this is still an experimental metric.

Cache 73

Cache Best Practices Metrics Google 73

Dotcom-Montior

JUNE 30, 2021

As we’ve noticed, website performance, especially its speed and availability, are essential to the success of your business. High speed, on the other hand, improves your customers’ user experience, and results in an increased conversion rate and income. For this article, we ran a speed test for the TED website as the target website.

Website 52

Website Monitoring Website Performance Performance 52

Speed Curve

SEPTEMBER 25, 2018

This gives us a relatively unique opportunity to analyse and aggregate performance metrics to gain some interesting insights. In this post, I'm going to analyse some browser-based paint timing metrics: First Paint & First Contentful Paint (defined in the Paint Timing spec and implemented in Chromium). What are paint timing metrics?

Metrics 49

Metrics Performance Testing Testing Internet 49

The Netflix TechBlog

SEPTEMBER 2, 2020

Tracing as a foundation Logs, metrics, and traces are the three pillars of observability. Metrics communicate what’s happening on a macro scale, traces illustrate the ecosystem of an isolated request, and the logs provide a detail-rich snapshot into what happened within a service.

Latency 296

Latency Transportation Engineering Traffic 296

Dean Hume

SEPTEMBER 21, 2016

Whilst web page load time is an important metric to measure, it doesn't tell the whole picture. As I started to learn more about web page performance, I started to experiment with webpagetest.org and discovered the different metrics that it uses. The total is your Speed Index score!" speedindex-test.

Speed 40

Speed Analytics Google Retail 40

Dean Hume

SEPTEMBER 21, 2016

Whilst web page load time is an important metric to measure, it doesn't tell the whole picture. As I started to learn more about web page performance, I started to experiment with webpagetest.org and discovered the different metrics that it uses. The total is your Speed Index score!" speedindex-test.

Speed 40

Speed Analytics Google Retail 40

Dean Hume

SEPTEMBER 21, 2016

Whilst web page load time is an important metric to measure, it doesn't tell the whole picture. As I started to learn more about web page performance, I started to experiment with webpagetest.org and discovered the different metrics that it uses. The total is your Speed Index score!" speedindex-test.

Speed 40

Speed Analytics Google Retail 40

The Netflix TechBlog

MARCH 13, 2020

Compression efficiency and performance Encoder performance SVT-AV1 reaches similar compression efficiency as libaom at the slowest speed settings. In the plot, the Y-axis shows the additional bitrate in percent needed to achieve similar quality as libaom encoder according to three metrics. A single-threaded compression mode is used.

Open Source 154

Open Source Efficiency C++ Speed 154

Speed Curve

DECEMBER 20, 2021

We apply this litmus test to everything we do, and I believe it's the secret of our success. We've been tracking these as individual metrics – Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift – since before Google branded them as a set. Watch a video walkthrough of the Vitals dashboard.).

Retail 52

Retail Benchmarking Metrics Website 52

Dotcom-Montior

AUGUST 5, 2020

Page speed has been a key factor in Google’s ranking algorithm since 2010 , so it is essential to understand the various ways you can optimize your pages and why implementing synthetic monitoring can ensure your pages perform flawlessly and revenue isn’t lost. Remember, speed is key to the user experience. Optimize Your Pages.

Website 92

Website Speed Cache Traffic 92

Speed Curve

MARCH 7, 2022

How does page bloat affect other metrics, such as Google's Core Web Vitals? I intentionally left out the numbers for video, because they seemed inconsistent. Google's Core Web Vitals are a set of metrics that are intended to focus on measuring performance from a user-experience perspective. Cumulative Layout Shift.

Mobile 145

Mobile Benchmarking Google Metrics 145