Link tags: latency

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Time to First Byte: What It Is and Why It Matters by Harry Roberts

Harry takes a deep dive into the performance metric of “time to first byte”, or TTFB if you using initialisms that take as long to say as the thing they’re abbreviating.

This makes a great companion piece to Drew’s article on server timing headers.

Cache-Control for Civilians – CSS Wizardry

Harry breaks down cache-control headers into steps that even I can understand. I’ll be using this a reference for sure.

The Elements of UI Engineering - Overreacted

These are good challenges to think about. Almost all of them are user-focused, and there’s a refreshing focus away from reaching for a library:

It’s tempting to read about these problems with a particular view library or a data fetching library in mind as a solution. But I encourage you to pretend that these libraries don’t exist, and read again from that perspective. How would you approach solving these issues?

The Fallacies of Distributed Computing (Applied to Front-End Performance) – CSS Wizardry – CSS Architecture, Web Performance Optimisation, and more, by Harry Roberts

Harry cautions against making assumptions about the network when it comes to front-end development:

Yet time and time again I see developers falling into the same old traps—making assumptions or overly-optimistic predictions about the conditions in which their apps will run.

Planning for the worst-case scenario is never a wasted effort:

If you build and structure applications such that they survive adverse conditions, then they will thrive in favourable ones.

The Nor » Low Latency

Like an Enid Blyton adventure for the 21st century, James goes out into the country and explores the networks of microwave transmitters enabling high-frequency trading.

If you think that London’s skyscraper boom is impressive – the Shard, the Walkie-Talkie, the Cheesegrater, the Gherkin – go to Slough. It is not height that matters, but bandwidth.

Latency: The New Web Performance Bottleneck - igvita.com

This is just wonderful! It combines almost all of my recent obsessions into one unified post: website performance (particularly on mobile) and the locations of undersea cables. The interactive map is the icing on the cake.