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How to use Server Timing to get backend transparency from your CDN

Speed Curve

Server-timing headers are a key tool in understanding what's happening within that black box of Time to First Byte (TTFB). Google recommends that TTFB be 800ms at the 75th percentile. Cue server-timing headers Historically, when looking at page speed, we've had the tendency to ignore TTFB when trying to optimize the user experience.

Servers 57
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In Defence of DOM­Content­Loaded

CSS Wizardry

I never thought I’d write an article in defence of DOMContentLoaded , but here it is… For many, many years now, performance engineers have been making a concerted effort to move away from technical metrics such as Load , and toward more user-facing, UX metrics such as Speed Index or Largest Contentful Paint. for the vast minority of sessions.

Metrics 326
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Site reliability done right: 5 SRE best practices that deliver on business objectives

Dynatrace

Microservices-based architectures and software containers enable organizations to deploy and modify applications with unprecedented speed. The growing amount of data processed at the network edge, where failures are more difficult to prevent, magnifies complexity. However, cloud complexity has made software delivery challenging.

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USENIX LISA2021 Computing Performance: On the Horizon

Brendan Gregg

AWS Graviton2); for memory with the arrival of DDR5 and High Bandwidth Memory (HBM) on-processor; for storage including new uses for 3D Xpoint as a 3D NAND accelerator; for networking with the rise of QUIC and eXpress Data Path (XDP); and so on. Ford, et al., “TCP

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USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon

Brendan Gregg

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

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How the Great Firewall of China Affects Performance of Websites Outside of China

Dotcom-Montior

Instead, you will encounter forever loading and other messages like timeout, connection error, network problem, etc. Any website request initially goes to the DNS server to fetch the IP address of the website and accesses it on the responded address. Monitor your website speed from China. DNS Poisoning/Spoofing. Blocking VPNs.

Website 82
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Fostering a Web Performance Culture

Jos

Google’s Lighthouse is one of them, which shows information about PWA, SEO and more. presented in Google IO 2018 ( source ) These tools make it easier to determine where we need to put emphasis to improve our sites. Also, the speed of my internet connection is humongous and I’m close to data centres located in Stockholm and London.