1 HN user recommended this talk1 month2015–2016score 1
Years with an HN recommendation, 2007–2026
HN points to it as a look at developer infrastructure at large scale, with speakers covering source control and CI test selection.
An F8 2015 talk touring the tool-chain Facebook uses to let thousands of engineers build mobile apps, including its move to Mercurial, an Atom-based IDE and continuous integration.
“It's a long video but it's very watchable using the YouTube speed multiplier.” (HN, 2015)
I think the best part of this article was the small link to the F8 2015 "Big Code" video [0] where they go into detail about switching from Git to Mercurial, building their own IDE around Atom, and detailing their continuous integration process. It's a long video but it's very watchable using the YouTube speed multiplier. :) [0] [this video]
Details Facebook's move to Mercurial, Atom-based IDE, and CI.
All correct, but I don't think Bryan O'Sullivan does much haskell these days. He's the manager of some sort of "Developer productivity" team. The Hack programming language came out of his team [1] (tho he wrote a blog post to contrast all the media coverage and say "my people did it, not me! [2]); he spoke about his activity at the last F8 [3]. But he does teach Haskell at Facebook after work :) [4] [1] [link] [2] [link] [3] [this video] [4] [link] EDIT: spelling
Talk where Bryan O'Sullivan describes Facebook developer productivity work.
Facebook does this to scale their tests, you can hear Katie Coons talking about it in CI at the end of [this video] . There are also rules that say "if you changed this file, run all tests" for things like CI config and such. Also, the build tool Buck ( [link] ) enables this because it knows the graph and associates tests with the code they test...so you even get this test minimization locally as a developer (that is, outside CI) for free. I'm sure Bazel likely has a similar feature too.
Katie Coons explains Facebook's test selection in CI.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.
Plays via YouTube's privacy-enhanced embed
4 Hacker News comments
From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.
Citations, criticism and jokes