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Migrating Netflix to GraphQL Safely

The Netflix TechBlog

The three strategies we will discuss today are AB Testing , Replay Testing, and Sticky Canaries. To launch Phase 1 safely, we used AB Testing. To launch Phase 2 safely, we used Replay Testing and Sticky Canaries. We knew we could test the same query with the same inputs and consistently expect the same results.

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Performance Game Changer: Browser Back/Forward Cache

Smashing Magazine

Performance Game Changer: Browser Back/Forward Cache. Performance Game Changer: Browser Back/Forward Cache. With that caveat out of the way, let’s get to the guts of the article: What is the Back/Forward Cache and why does it matter so much? Didn’t The HTTP Cache Do All That Anyway? Barry Pollard.

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Seamlessly Swapping the API backend of the Netflix Android app

The Netflix TechBlog

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. For the migration, testing was a first-class citizen. Replay Testing Enter replay testing.

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Best Free DNS Hosting Providers

KeyCDN

ISPs do cache DNS however which means if your first provider goes down it will still try to query the first DNS server for a period of time before querying for the second one. You can test the DNS lookup time and TTFB with a website speed test tool. Their network is made up of over 60 POPs and supports IPv6 everywhere.

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KeyCDN Launches New POP in Mexico

KeyCDN

For more POPs planned, check our current network for a list of both active and planned edge server locations. One more POP is planned for 2021! In a few weeks, we'll add a POP in Santiato (Chile) which will make a significant difference for the west of South America.

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Average Page Load Time in 2021

MachMetrics

Many people often confuse site speed with page speed grades of performance testing tools, which are actually calculated based on multiple factors of a page including its loading speed. Average page loading time varies based on the testing environment. Check this image – Average page load time in 2021.

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Why speed test results are different than your load times

MachMetrics

You run a speed test on a website, and the results don’t match what you personally experience. Perhaps you feel like your site loads fairly quickly, but the speed test results are sub-optimal. It’s one of the most common (and frustrating) scenarios in web performance testing.

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