The Netflix TechBlog

OCTOBER 14, 2021

by Joel Sole, Mariana Afonso, Lukas Krasula, Zhi Li, and Pulkit Tandon Introducing the banding artifacts detector developed by Netflix aiming at further improving the delivered video quality Banding artifacts can be pretty annoying. Just a subtle change in the video signal can cause banding artifacts. Banding artifact?

Open Source 195

Open Source Metrics Government Systems 195

Dynatrace

OCTOBER 26, 2020

Dynatrace has recently enhanced its Metrics APIs, allowing everyone to send any type of metric with any set of data dimension to Davis, Dynatrace’s AI engine. Christian Inzko , Performance Engineer out of our Klagenfurt Lab, is running a lot of performance tests to validate performance and scalability of our Dynatrace clusters.

Innovation 157

Innovation Metrics Hardware Games 157

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.

Media 246

Media Open Source Efficiency Software Engineering 246

Dynatrace

JULY 16, 2021

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. The innovative technology powering these recent and future use cases comes from Keptn , our recognized CNCF open-source project.

DevOps 245

DevOps Open Source Cloud Azure 245

The Netflix TechBlog

APRIL 29, 2019

We use Python through the full content lifecycle, from deciding which content to fund all the way to operating the CDN that serves the final video to 148 million members. We use and contribute to many open-source Python packages, some of which are mentioned below. video streaming) takes place in the Open Connect network.

Open Source 279

Open Source Network Infrastructure Big Data 279

Dynatrace

OCTOBER 11, 2021

GCF pairs well with Google Cloud Build, which enables testing and other CI/CD tasks based on functions originating in GCF. Avoid lock-in with open-source technologies. On the processing side, GCF functions can interface with Google’s own AI/ML technologies to inspect video and image content.

Google 227

Google Cloud Serverless Azure 227

Dynatrace

SEPTEMBER 4, 2020

“This is a mouthful of buzzwords” is how I started my recent presentations at the Online Kubernetes Meetup as well as the DevOps Fusion 2020 Online Conference when explaining the three big challenges we are trying to solve with Keptn – our CNCF Open Source project: Automate build validation through SLI/SLO-based Quality Gates.

DevOps 249

DevOps Metrics Innovation Azure 249

The Netflix TechBlog

FEBRUARY 13, 2020

Using the framework we have open sourced, AVIF compression efficiency can be seen at work and compared against a whole range of image codecs that came before it. With the motion extension, it was accepted as the video coding standard for digital cinema in 2004. High-Efficiency Video Coding ( HEVC ) is the successor of H.264,

Code 212

Code Metrics Efficiency Open Source 212

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 134

Mobile Testing Website Benchmarking 134

Dynatrace

MARCH 3, 2020

One way to apply improvements is transforming the way application performance engineering and testing is done. This involves new software delivery models, adapting to complex software architectures, and embracing automation for analysis and testing. Check out Dynatrace’s Load testing tool integration. Get started today! .

Performance 246

Performance Education Innovation Software Architecture 246

The Netflix TechBlog

MAY 21, 2019

using RL agents for test case scheduling By: Stanislav Kirdey , Kevin Cureton , Scott Rick , Sankar Ramanathan Introduction Netflix brings delightful customer experiences to homes on a variety of devices that continues to grow each day. Detect a regression in a test case. These problems could be solved in several different ways.

Testing 163

Testing AWS Lambda Network 163

Dynatrace

APRIL 16, 2021

Whether these are open-source developers I meet through my work on the CNCF project Keptn or Dynatrace partners and customers who I try to help get the most out of their investment in our Software Intelligence platform. Relevant infrastructure, operations and business metrics on a single Dynatrace dashboard for CARY.

Monitoring 155

Monitoring Open Source Best Practices DevOps 155

Dynatrace

NOVEMBER 19, 2020

One highlight from the conference was the introduction of the open-source project called Keptn which Dynatrace is leading. 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.

Software 144

Software Software DevOps Open Source 144

The Netflix TechBlog

OCTOBER 19, 2020

Investigating a video streaming failure consists of inspecting all aspects of a member account. Troubleshooting a session in Edgar When we started building Edgar four years ago, there were very few open-source distributed tracing systems that satisfied our needs. which is difficult when troubleshooting distributed systems.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

Dynatrace

FEBRUARY 10, 2021

Think curbside delivery for groceries, video conferencing for work and school, and telemedicine for doctor visits. Dynatrace Cloud Automation allows easy analysis of the status and impact a release has on your business or on test results in any environment.

Cloud 171

Cloud DevOps Speed Azure 171

Speed Curve

MAY 1, 2023

A performance budget is a threshold that you apply to the metrics you care about the most. You can then configure your monitoring tools to send you alerts – or even break the build, if you're testing in your staging environment – when your budgets are violated. Which metrics should you start with?

Performance 98

Performance Metrics Media Google 98

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

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

Smashing Magazine

SEPTEMBER 29, 2021

Key user-centric metrics often depend on the size, number, layout, and loading priority of images on the page. Smaller file size directly impacts the Largest contentful Paint (LCP) metric for the page as image resources needed by the page get loaded faster. However, you should ideally replace such images with videos.

Open Source 144

Open Source Speed Website Google 144

The Netflix TechBlog

OCTOBER 18, 2019

Contextual and Multi-armed Bandits enable faster and adaptive alternatives to traditional A/B Testing. The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., theme of the ML Platform meetup hosted at Netflix, Los Gatos on Sep 12, 2019.

Infrastructure 126

Infrastructure Metrics Architecture Efficiency 126

Smashing Magazine

APRIL 29, 2022

Performance needs to be built in starting at the code level, and user-centric metrics like time to interactive (TTI), total blocking time (TBT), and first input delay (FID) help you gauge how fast a website is. Large images and videos aside, third-party scripts like pixel trackers, A/B testing, ads, widgets, CDNs, etc.,

Website 81

Website Google Open Source Mobile 81

The Netflix TechBlog

OCTOBER 18, 2019

Contextual and Multi-armed Bandits enable faster and adaptive alternatives to traditional A/B Testing. The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., theme of the ML Platform meetup hosted at Netflix, Los Gatos on Sep 12, 2019.

Infrastructure 100

Infrastructure Metrics Architecture Efficiency 100

The Netflix TechBlog

FEBRUARY 10, 2021

We recently presented a talk on how we built Hawkins; so if you are interested in more details, check out the video. Depending on which solution you choose, you could be inheriting a ton of issues or something that is battle tested. What is a design system? It can mean different things to different people.

Design 230

Design Systems Engineering Entertainment 230

CSS - Tricks

OCTOBER 10, 2019

WebPageTest is an online tool and an Open Source project to help developers audit the performance of their websites. How can you test the performance of your users’ flow, when most of it happens client-side and does not have a specific URL to point to? The problem with testing Single Page Applications. Here’s an example.

Performance Testing 51

Performance Testing Testing Performance Open Source 51

Smashing Magazine

JANUARY 6, 2020

Getting Ready: Planning And Metrics. Testing And Monitoring. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

NOVEMBER 22, 2021

This includes features like videos and animations, sophisticated interactions, and greater customization. Better tooling and metrics standardization. But which metrics should be measured in order to determine website performance? The three metrics are: LCP : Largest Contentful Paint (measures visibility).

Website 126

Website Performance Google Media 126

Smashing Magazine

JANUARY 7, 2019

Getting Ready: Planning And Metrics. Testing And Monitoring. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Table Of Contents. Setting Realistic Goals.

Performance 104

Performance Cache Network Metrics 104

Alex Russell

APRIL 29, 2021

Apple Corporate is at fault, not Open Source engineers or the line managers who support them. Thanks to the Web Platform Tests project and wpt.fyi , we have the makings of an answer for the first: Tests that fail only in a given browser. Another window into this question is provided by the Web Confluence Metrics project.

Media 145

Media Games Education Engineering 145

Smashing Magazine

JUNE 8, 2021

Next to videos, images are the heaviest, most requested assets on the web. Downloading files such as images or videos over the network can be slow and costly. Which metrics should you focus on to improve the user experience? DRM-free, of course. ePUB, Kindle, PDF. Included with Smashing Membership. Get the eBook. About The Book.

Media 106

Media Cache Google Best Practices 106

O'Reilly

JANUARY 17, 2023

If you’re a professional data scientist, you already have the knowledge and skills to test these models. In the past they understood the APIs of TensorFlow and Torch to build models by hand; today they are fluent in the autoML vendor’s APIs to train models, and they understand how to review the metrics.

Tuning 128

Tuning Open Source AWS Software 128

Smashing Magazine

APRIL 28, 2021

Next to videos, images are the heaviest, most requested assets on the web. Downloading files such as images or videos over the network can be slow and costly. Which metrics should you focus on to improve the user experience? DRM-free, of course. ePUB, Kindle, PDF. Included with Smashing Membership. Get the eBook. About The Book.

Media 93

Media Cache Google Best Practices 93

Smashing Magazine

JUNE 2, 2021

The project consisted of upgrading the shop software to our own open-source system and redoing the shop’s front end from scratch. Add to that the payment provider drop-in, and you have yourself some pages that no one will want to touch once they have been properly tested and work. Large preview ). Large preview ).

Performance 116

Performance Cache Website Mobile 116

Rigor

SEPTEMBER 11, 2019

Follow him on Twitter @ RickByers and be sure to watch the video of his conversation at Chrome Dev Summit 2016 , where he discussed the ways Chrome is “improving predictability for developers.” Check out his how-to videos on his YouTube channel as well as his performance related dispatches on Twitter @ paulcalvano.

Performance 89

Performance Education Google Website 89

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. speedindex-test. The final step is very easy: add these numbers together.

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. speedindex-test. The final step is very easy: add these numbers together.

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. speedindex-test. The final step is very easy: add these numbers together.

Speed 40

Speed Analytics Google Retail 40

Smashing Magazine

APRIL 29, 2021

Largest Contentful Paint (LCP) is a Core Web Vitals metric that measures when the largest contentful element (images, text) in a user’s viewport, such as one of these images, becomes visible. Cumulative Layout Shift (CLS, a Core Web Vitals metric) measures the instability of content. Lighthouse. Large preview ). Large preview ).

Media 145

Media Network Metrics Mobile 145