Maestro is a library we have developed to handle all playback across SoundCloud web applications. It successfully handles tens of millions of plays per day across soundcloud.com, our mobile site, our widget, Chromecast, and our Xbox application. We are considering open sourcing it, and this blog post is a technical overview of what we’ve achieved thus far with Maestro.
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May 3rd, 2019 Web Playback TypeScript Streaming Playback on Web at SoundCloud By Tom Jenkinson
April 18th, 2019 Announcements Security Taking Our Bug Bounty Program Public By Tobias Schmidt
We’re excited to announce the launch of our public bug bounty program with Bugcrowd — the #1 crowdsourced security platform. This public program is open to Bugcrowd’s full crowd of top, trusted whitehat hackers, and we will award up to $1,500 per vulnerability identified on our website, API, and mobile apps.
April 3rd, 2019 Android Mobile Release Testing Engineering Release Quality and Mobile Trains By Julio Zynger
Once every two weeks, we prepare new versions of our mobile apps to be published to the app stores. Being confident about releasing software at that scale — with as many features and code contributions as we have and while targeting a wide range of devices like we do at SoundCloud — is no easy task. So, over the last few years, we have introduced many tools and practices in our release process to aid us.
In this blog post, I’ll cover some of the techniques we use to guarantee we’re always releasing quality Android applications at SoundCloud.
March 21st, 2019 Search Performance Engineering How to Reindex One Billion Documents in One Hour at SoundCloud By Qaiser Abbasi
In the past, the Search Team at SoundCloud had high lead times for making updates to Elasticsearch clusters, either during the implementation of a new feature or simply while fixing a bug. This was because both tasks require us to reindex our catalog from scratch, which means reindexing more than 720 million users, tracks, playlists, and albums. Altogether, this process took up to one week, though there was even one scenario where it almost took one month to roll out a bug fix.
In this post, I would like to share the concrete Elasticsearch tweaks we made so that we can now reindex our entire catalog in one hour.
March 6th, 2019 Engineering Off-Platform Validation By Joe Kearney
Last month we launched SoundCloud Premier Distribution, which allows creators to distribute their music from SoundCloud to other streaming platforms and stores. For many of our users, this will be their first experience with the conventions and requirements of the music industry supply chain. Due to strict requirements regarding metadata and media, the barriers to entry to this world are very different than those to a creator uploading to SoundCloud.
The aim of SoundCloud Premier Distribution is to make the path from SoundCloud upload to off-platform plays as frictionless as possible. Here we’ll look at how a system of automatic and manual validations allows users to get fast feedback as they prepare a release.