data

How we knew COVID was over (and what our models had to unlearn)

Published 2026-08-20 forecasts forecast structure

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Project Lighthouse — Part 3: Introducing project-lighthouse-anonymize

Published 2026-08-26 dq anonymize lighthouse

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Beyond the model: Engineering AI infra with scientific judgement

Published 2026-09-16 insight investigation product

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Sharing Sounds

Published 2011-04-05 soundcloud sharing tracks

UPDATE: Check out our guides on Authentication and Sharing Sounds for the most recent information. If you build an app or web service that generates any type of…

MySQL for Statistics – Old Faithful

Published 2011-07-05 plays table using

MySQL turns out to be a good Swiss Army Knife for persistence, if used wisely. Understanding disk access patterns driven by your storage…

Building the SoundCloud mobile site using backbone.js

Published 2011-08-02 backbone soundcloud site

Until early this year, there was a gap. A gap between the desktop-targeted main SoundCloud site, what we call the ‘mothership’, and the…

Doing the right thing

Published 2011-08-24 slaves binlog replication

The recent outage of SoundCloud was the result of everybody doing the right thing. This totally jives with John Allspaw’s message that…

Building The Next SoundCloud

Published 2012-06-14 views sound instance

This article is also available in: Serbo-Croatian: Pravljenje novog SoundCloud Armenian: SoundCloud (ձայնամպ) ծրագրավորողների համար The…

Waveforms, Let's Talk About Them

Published 2012-06-26 waveforms johannes webkit

Waveforms I’ve worked at SoundCloud for over two years now, and if there’s one thing I do a lot, it’s color waveforms. Tons of them. And, I’ve done it several d…

Recording and Sharing Phone Calls

Published 2012-07-12 soundcloud recording hack

A few weeks ago, I attended News Hack Day in San Francisco. News Hack Days are events that bring together journalists, developers and designers for multi day cr…