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Philip Tellis

@bluesmoon.info

1K followers 190 following 180 posts

Creator: boomerang.js ∘ Founder: LogNormal ∘ Organizer: Boston Web Perf & CAJUN ∘ Web Performance ∘ Real User Measurement ∘ Data Nerd ∘ Bread Baker ∘ Akamai ∘ W3C WebPerf WG ∘ Julia dev ∘ Conference speaker ∘ Full stack pancakes ∘ Unstacked developer

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Philip Tellis @bluesmoon.info · 5h

I'll be chatting with @henrihelvetica.bsky.social in about 90 minutes about the history of boomerang and RUM. Join us.

Henri Helvetica 🧑🏾‍🚀🇭🇹 @henrihelvetica.bsky.social · 1d

✨ SPDY STREAM 014 ✨ with @bluesmoon.info.
Originating at Yahoo Engineering nearly 15 years ago, Boomerang is a high-performance JavaScript library for Real User Measurement (RUM). Philip will share its history + current impact. JOIN US!
📅 Wednesday Oct 15th
⏰ 1pm EDT
🔗 bit.ly/spdy-stream-014

SPDY STREAM 014 with Philip Tellis of Akamai

Boomerang is a high-performance JavaScript library for Real User Measurement (RUM) that has been actively developed for nearly 15 years, originating at Yahoo Engineering. RUM has never been more impor...

bit.ly

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Philip Tellis @bluesmoon.info · 1d

Based on the photos from you and @devdevcharlie.com it looks like you'll are sitting at two ends of the same row in that conference room.

Reposted by Philip Tellis

bleary @bleary.off-the-records.com · 2d

If anyone needs me I will be in the museum, lying down next to the bog bodies.

Did people really memorize phone numbers before cell phones, or is that just a movie thing?
2? Questions
I was watching some old shows from the 90s and noticed people would just dial numbers from memory - like they'd call their friends or family without looking anything up.
Made me wonder if that was actually normal back then? Did people genuinely have all their important numbers memorized, or did most folks keep a little address book or written list nearby?

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Philip Tellis @bluesmoon.info · 4d

This is why you don't trust google's AI overview: "The error 0x23 is the hexadecimal representation of the decimal error code 23". No, hex 23 is NOT the same as decimal 23.

Philip Tellis @bluesmoon.info · 8d

As kids we'd use headphones as a microphone to record our voices. Was quite soft though.

Philip Tellis @bluesmoon.info · 8d

Wanna do a practice session at the Boston Web Perf meetup?

Philip Tellis @bluesmoon.info · 10d

Stanford law school had evening classes that I attended while I lived in mountain view 15 years ago. It was very interesting. I'm still not a lawyer.

Philip Tellis @bluesmoon.info · 13d

The next CAJUN meetup will be at 4:30pm on Wed, Oct 15 at Akamai HQ in Kendall Sq. Anshul Singhvi will speak about GeometryOps.jl: www.meetup.com/julia-cajun/...
#julia #cambridge #geometry

Building geometry processing tools using multiple dispatch, Wed, Oct 15, 2025, 4:30 PM | Meetup

Welcome to the October 2025 CAJUN meetup. We welcome **Anshul Singhvi** speaking about **GeometryOps**. This meetup will be at the **Akamai** office in Kendall Square. See

www.meetup.com

Philip Tellis @bluesmoon.info · 17d

OH: our 8yo explaining the Great British Baking Show to two other 8yos... It's like FIFA, but the teams are just 1 person and instead of soccer they have to bake 3 things, and then one of them goes out.

Philip Tellis @bluesmoon.info · 18d

To make it more confusing, they only do counterfeiting of cash. Checks on the other hand are FBI... I got that from "Catch me if you can" 😁

Reposted by Philip Tellis

Edward Elderman @elderman.bsky.social · 19d

This only happens to you once

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Philip Tellis @bluesmoon.info · 18d

so apparently the secret service was founded in 1865 specifically to investigate counterfeiting. Protecting presidents came later.

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Philip Tellis @bluesmoon.info · 18d

I only know this because I watched the Jack Reacher TV series and then had to go verify :D

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Philip Tellis @bluesmoon.info · 18d

The secret service is also responsible for financial crimes (particularly counterfeiting) and cyber crimes that affect the US financial systems...

Philip Tellis @bluesmoon.info · 19d

Unit test threw an error... but it wasn't the right error based on my understanding of the code. Investigated and found two different bugs. One that caused the initial error and another that caused the wrong error to fire.

Philip Tellis @bluesmoon.info · 21d

Made apple spice bread for the start of fall. Spices include cinnamon, clove, allspice and ginger. Happy with how this came out because it's generally hard to work with fruits that leak water into the dough while it bakes. #bread

An angled top down view of a loaf of sandwich bread placed left to right on a wire rack. A long score runs horizontally along the length of the loaf while a partially visible design is scored over the top.
Pieces of caramelized apple peek out through the main score.

A head on view of the cross-section of a loaf of sandwich bread. Pieces of apple are visible across the inside while swirls of spice cover the crumb.

Reposted by Philip Tellis

Per Axbom @axbom.com · 27d

If you're on #LinkedIn, this is the link for declining their use of your data for training their AI models:

www.linkedin.com/mypreference...

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Philip Tellis @bluesmoon.info · Sep 11

But what if it's talking about a group of crows?

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Philip Tellis @bluesmoon.info · Sep 10

It's where Billy Joel lives

Philip Tellis @bluesmoon.info · Sep 10

All of my submissions to CodeMotion Milan have been rejected.

Philip Tellis @bluesmoon.info · Aug 28

"Real users are not generic" ™

Reposted by Philip Tellis

Data Visualization Society @datavizsociety.bsky.social · Aug 28

📊 How can data-driven stories be crafted to engage everyone, from the most tech-savvy to those who prefer simplicity?

Nina Errey's research reveals how different age groups interact with narrative visualizations and offers insights to create inclusive designs.

nightingaledvs.com/why-audience...

Why audience age matters: The Influence of Audience Age on Engagement with Interactive Narrative Visualization, Nightingale

Interactive data-driven stories are an increasingly common way to communicate complex information—climate change, election outcomes, etc.

nightingaledvs.com

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Philip Tellis @bluesmoon.info · Aug 25

Also apparently no one told the department that prints out invoices that the url was updated a year ago.

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Philip Tellis @bluesmoon.info · Aug 25

Insurance website url was updated. Their old page has the new link, but it's not a link, it's a <span> that is colored blue and underlined but is not clickable. I don't understand why. It redirects in 15 seconds using a one second JavaScript setInterval that runs for 15 iterations.

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Philip Tellis @bluesmoon.info · Aug 23

I once did a talk in Sweden about how our RUM service worked with SPAs which was very confusing because in Swedish, RUM service translates to "room service".