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CSS and Network Performance

CSS Wizardry

CSS is critical to rendering a page—a browser will not begin rendering until all CSS has been found, downloaded, and parsed—so it is imperative that we get it onto a user’s device as fast as we possibly can. download any CSS needed for the current context (medium, screen size, resolution, orientation, etc.) Employ Critical CSS.

Network 278
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Globalizing Productions with Netflix’s Media Production Suite

The Netflix TechBlog

Local storage and compute services are connected through the Netflix Open Connect network (Netflix Content Delivery Network) to the infrastructure of Amazon Web Services (AWS). Media Downloader An automated download tool that initiates a download once media has been made available in the Netflixcloud.

Media 203
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Monitor web applications from within your corporate network

Dynatrace

Your browser monitor can: Download all the web page resources and objects. Q: Do I need a special network configuration, opening non-standard ports and/or whitelisting some addresses? A: It all depends on your internal network architecture. Execute client-side JavaScript. Measure the performance of complete web pages.

Network 203
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The Three Cs: Concatenate, Compress, Cache

CSS Wizardry

Compressing them over the network: Which compression algorithm, if any, will we use? Given this limitation, it was advantageous to have fewer files: if we needed to download 18 files, that’s three separate chunks of work; if we could somehow bring that number down to six, it’s only one discrete chunk of work. main.af8a22.css

Cache 348
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Netflix Android and iOS Studio Apps?—?now powered by Kotlin Multiplatform

The Netflix TechBlog

The high likelihood of unreliable network connectivity led us to lean into mobile solutions for robust client side persistence and offline support. Poor network connectivity coupled with frequently changing configuration values in response to user activity means that on-device rule evaluation is preferable to server-side evaluation.

Mobile 279
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Why Not document.write()?

CSS Wizardry

slow: Synchronous JS can block DOM construction while the file is downloading. Synchronous JS never blocks downloads of subsequent files. The reason scripts never block subsequent downloads is because of something called the Preload Scanner. There are a number of things that can make regular, synchronous scripts 1.

Google 298
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How Dynatrace protects its software development and delivery life cycle against supply chain attacks

Dynatrace

Access to source code repositories is limited on both the network and the user level. Source code management systems are only accessible from within the Dynatrace corporate network. Remote access to the Dynatrace corporate network requires multi-factor authentication (MFA). No manual, error-prone steps are involved.

Software 289