The Netflix TechBlog

JANUARY 24, 2022

This post describes how the Netflix TVUI team implemented a robust strategy to quickly and easily detect performance anomalies before they are released?—?and What do we mean by Performance? Technically, “performance” metrics are those relating to the responsiveness or latency of the app, including start up time.

Performance 199

Performance Metrics Performance Testing Testing 199

The Netflix TechBlog

APRIL 26, 2022

The first version of our logger library optimized for storage by deduplicating facts and optimized for network i/o using different compression methods for each fact. Then we started hitting roadblocks while optimizing the query performance. Pay the storage, network, and compute cost.

Storage 187

Storage Design Scalability Latency 187

Dynatrace

JUNE 27, 2022

For example, the ability to test against a wireless provider in a remote area. Performance testing based on variable metrics (i.e., connectivity, access, user count, latency) of geographic regions. Synthetic monitoring drawbacks. Much like RUM, synthetic monitoring has its limitations.

Best Practices 166

Best Practices Monitoring Wireless Traffic 166

Smashing Magazine

OCTOBER 31, 2023

Type 2: Full Real-User Monitoring (RUM) If CrUX offers one flavor of real-user data, then we can consider “full real-user data” to be another flavor that provides even more in the way individual experiences, such as specific network requests made by the page. The accuracy of observed data depends on how the test environment is set up.

Speed 99

Speed Google Website Metrics 99

The Netflix TechBlog

MARCH 6, 2019

We use this to debug errors and performance issues in specific mounts. Rerun a batch of replays We collect replays from actual MezzFS mounts in production, and we rerun large batches of replays for regression and performance tests. Adaptive Buffering — The shiny new technique described above.

Media 214

Media Storage Processing Cache 214

CSS - Tricks

JULY 25, 2019

Over the past couple of years, it has become the go-to free performance analysis tool. Lighthouse uses Chrome’s Remote Debugging Protocol to read network request information, measure JavaScript performance, observe accessibility standards and measure user-focused timing metrics like First Contentful Paint , Time to Interactive or Speed Index.

Google 71

Google Engineering Speed Mobile 71

Testsigma

JANUARY 30, 2021

Each smartphone comes with various screen sizes and resolutions, operates on different network speeds, and has different hardware capabilities. Keeping all these differences, it becomes very important that a website is tested thoroughly before it is launched on different platforms.

Mobile 52

Mobile Testing Website Internet 52

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled 3G network (e.g.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled network (e.g.

Performance 104

Performance Cache Metrics Network 104

Rigor

OCTOBER 30, 2019

The Lighthouse Performance score is based on some of the most important performance metrics : First Contentful Paint, First Meaningful Paint, Speed Index, Time to Interactive, First CPU Idle, and Estimated Input Latency. As we’ve discussed before , Lighthouse blends these performance metrics into a single composite score.

Google 51

Google Best Practices Energy Website 51

SQL Server According to Bob

JANUARY 11, 2020

Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations. Dirty Page Latency ​​ – A page is considered dirty when data modifications have taken place. SQLIO.exe SQLIO.exe is a SQL Server 2000 I/O utility used to establish basic benchmark testing results.

Servers 40

Servers Cache Media Hardware 40

Smashing Magazine

SEPTEMBER 6, 2021

Next, we’ll look at how to set up servers and clients (that’s the hard part unless you’re using a content delivery network (CDN)). Finally, we’ll see which tools you can use to evaluate the performance impact of the new protocols (that’s the almost impossible part, at least for now). Servers and Networks. Network Configuration.

Network 107

Network Servers Cache Traffic 107