Meta Tech Podcast

For another socially distant interview, Pascal and Rachel are joined by Martin and Kevin who work on Instagram Reels, which had its global launch just a few weeks ago. They lift the veil on country tests, what makes stitching videos seamlessly together so hard on Android and iOS and share their thoughts on the short-form video space in general. You will also learn why doing the simple thing first really pays off when working on complex projects. Before the interview, Pascal walks you through the recent events in the Facebook Open Source space. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Topics Hermes: https://hermesengine.dev/ Facebook Open Source on YouTube: https://www.youtube.com/channel/UCCQY962PmHabTjaHv2wJzfQ Docusaurus v2: https://v2.docusaurus.io/ Timestamps Intro 0:05 News 1:16 Interview 3:32 Outro 43:02 Bloopers 43:45

Inside Facebook Mobile is back for a special interview with the team behind the Facebook COVID-19 Info Centre. Chang, Jarman and Zaven share their experiences of building and shipping a global product like this over the course of just a few weeks. We discuss how the early architectural decisions enabled the seamless collaboration with tens of teams that were all working remotely.   Before we get to the interview, Mihaela joins Pascal for a quick check-in on Litho, the native UI framework for Android, and Flipper, an extensible dev-tools platform for mobile.   Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Topics COVID-19 Hub: https://www.facebook.com/covid-19 Litho: https://fblitho.com/ Flipper: https://fbflipper.com/ Timestamps Intro 0:06 News: Litho 1:09 News: Flipper 4:31 Interview 7:27 Post-Interview 35:36 Outro 37:50 Bloopers 38:14

With large-scale public events seeming rather distant right now, the concept of virtual conferences is an exciting way to stay in touch with people and learn new things. Pascal is joined by the organising team of the Women of React conference, where women take the virtual stage, but everyone is welcome to attend and participate. Cassidy, Sara, Kevin, Jenn and our very own Rachel share how they came up with the idea and what you need to kick off your own online conference.   The conference will happen on Saturday, April 25, 2020 and you can register for free at https://womenofreact.com/.   Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile).   Topics Women of React: https://womenofreact.com/ event.Handler() pod: https://eventhandlerpod.com/ Board Game Arena: https://boardgamearena.com/ Timestamps 0:00 - Intro 1:54 - Interview 27:28 - Outro

Unfortunately due to the current global pandemic, we don't have an interview for you, but stay tuned and subscribe to the feed for some remote interviews in the near future. Do follow @passy, @rachelnabors, and @insidefbmobile for updates.

For the first time, Rachel and Pascal are joined by a guest from WhatsApp. Silky walks the two through a staggering array of optimisations WhatsApp deploy to make sure that text, media and documents arrive quickly, reliably and safely on the other end. They discuss going from five to six nines of reliability for Facebook’s distributed blob store, POPs, FNAs, and fighting abuse on an end-to-end encrypted platform. As ever, before the interview, Pascal and Rachel discuss some news from the Open Source world, including React Native documentation updates, an exciting contracting opportunity on the Docusaurus project and the latest Facebook Open Source statistics. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Topics React Native Docs: https://reactnative.dev/docs/getting-started Docusaurus Contract: https://profacebook.applytojob.com/apply/hZPoVr1Eoj/Front-End-Engineer-V Open source year 2019 in review: https://engineering.fb.com/open-source/open-source-2019/ Evolution of WhatsApp within Facebook’s data centers: https://atscaleconference.com/videos/evolution-of-whatsapp-within-facebooks-data-centers/ WhatsApp on how it’s fighting bulk messaging and fake accounts: https://venturebeat.com/2019/02/06/whatsapp-on-how-its-fighting-bulk-messaging-and-fake-accounts/ How WhatsApp Reduced Spam for Over 1 Billion People: https://developers.facebook.com/videos/f8-2017/how-whatsapp-reduced-spam-for-over-1-billion-people/ Timestamps Intro    0:05 News: React Native Docs    1:02 News: Docusaurus Contractor    1:52 News: Open Source in Review 2019    3:10 Interview with Silky    5:05 Sharding Graph Databases    6:10 Getting into CompSci    7:45 Scaling an Exabyte Blob Store    9:00 Benefits of Shared Infrastructure    13:46 Going from 5 to 6 Nines    17:19 POPs    18:09 ISP-Level Caches    19:19 Making WhatsApp New-Year-Safe    22:13 Fighting Encrypted Abuse at WhatsApp    25:00 Encrypted Media Forwarding    32:45 ML Teams at FB    35:42 Transition to Management (and Back)    37:37 Outro    43:56 Aftershow/Outtakes    48:55 Harley Quinn: Birds Of Prey    50:59

Pascal is joined by Rachel in the co-host chair for this first episode of the new decade. The two interview Sergey from the Android UI Frameworks team to discuss the long-awaited rollout of Kotlin within Facebook. Sergey himself is currently working on a new set of APIs for building UI components in Kotlin. With Rachel’s background in React and React Native, they explore some of the inspirations and differences between React, React Native and Litho before talking about the design of new Kotlin APIs for Litho. The last part of the conversation focuses on the gradual adoption of Kotlin at Facebook and why this is a big undertaking at a company operating at this scale. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Links Litho: https://fblitho.com/ React Native Docs: https://facebook.github.io/react-native/docs/getting-started Flipper: https://fbflipper.com/ ktfmt: https://github.com/facebookincubator/ktfmt Redex: https://github.com/facebook/redex Redex IFBM Episode: https://pca.st/J3cn Timestamps Intro 0:00 React Native Docs Update 0:58 Flipper Sidebar Reorganisation 4:42 Interview with Sergey 8:01 Litho and React-style UI frameworks 14:47 Kotlin API Design 27:53 Kotlin at Facebook 36:30 Redex Code Optimisation 39:25 Introducing New Languages at Facebook 40:32 Facebook Mobile Build Infrastructure 41:19 Litho's Target Audience 43:07 Educating About New Languages 46:29 Code Formatting (ktfmt) 48:45 Current Kotlin Use at Facebook 50:21 Outro 51:41 Bloopers 55:40

For the last episode of the decade, Pascal is joined by Inside Facebook Mobile royalty Emil, who shares what he has been up to since his last appearance on the podcast and how Facebook Open Source is still part of his day-to-day work. Then we head over to Droidcon UK 2019 again, where Pascal interviews Aziz from the Android Native UI Frameworks team about benchmarking UI components, followed by a chat with Aziz’s teammates Andy and Pasquale about effective multi-threading on Android. Unfortunately, the video recordings of the talks are still unavailable, but we will update you if that changes. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). News and Topics fbjni: https://github.com/facebookincubator/fbjni Jest: https://jestjs.io/ Litho: https://fblitho.com/ Flipper: http://fbflipper.com/ Visly: http://visly.app/ Facebook and Microsoft Partnering on Remote Development: https://developers.facebook.com/blog/post/2019/11/19/facebook-microsoft-partnering-remote-development/ The Diff - Talking Libra with Eric Nakagawa: https://thediffpodcast.com/docs/episode-8 Timestamps Intro fbjni 3:43 News: FB and MS work on VS Code 8:47 Skip Language (http://skiplang Interviews 11:55 Interview: Aziz on UI Benchmarking 12:20 Interview: Pasquale and Andy on Threading 21:00 Post-Interview Chat with Emil 32:36 Outro 41:03 Bloopers 41:44

Pascal went mobile again and brought the mics to this year’s droidcon Android conference in London. He interviewed the record-breaking six speakers Facebook had this year and discussed some topics with them. This episode kicks off with Sergey, who presented a deep-dive into the current state of cross-platform coroutine libraries for Kotlin, comparing Reaktive and kotlinx.coroutines Flow in their usability, performance and memory appetite. The second interview is with Alexander from the Fresco team who talks about the evolution of the open source image loading and memory management library and teases at what’s up next for the widely used project. In the last interview we hear from Lisa (https://twitter.com/lisawrayz), a software engineer on the Messenger Lite team. She joins Pascal to chat about the design principles that went into designing a messenger application for emerging markets. Sadly, the video recordings of the talks are currently unavailable, but we will update you here and on the podcast as soon as that changes. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). News and Topics fbjni soft launch: https://github.com/facebookincubator/fbjni PyTorch for Android: https://pytorch.org/mobile/android/ Fresco: https://frescolib.org/ Reaktive: https://github.com/badoo/Reaktive Kotlinx.coroutines: https://github.com/Kotlin/kotlinx.coroutines Messenger Lite: https://play.google.com/store/apps/details?id=com.facebook.mlite Timestamps Intro    0:05 News: fbjni    1:43 News: PyTorch for Android    2:34 Interviews    3:05 Correction    3:43 Sergey on Kotlin Coroutines    4:26 Alexander on Fresco    11:42 Lisa on Messenger Lite    26:58 Outro    35:50 Nope, no bloopers    36:33

Once a year, Facebook invites developers from various companies to a cosy place somewhere in East London to talk for a day about scaling challenges on mobile. This year, Mihaela and Pascal join the fun and talk to a bunch of the attendees, which are for the first time not (all) Facebook employees. Tune in to learn how Deliveroo are moving from Java to Kotlin, the BBC is using their app to find a more inclusive audience, how Asos moved away from never-ending feature branches and much more. Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Topics Discussed mvfst-rl: https://github.com/facebookresearch/mvfst-rl The Diff: https://thediffpodcast.com/ Tech & Society with Mark Zuckerberg: https://podcasts.apple.com/us/podcast/tech-society-with-mark-zuckerberg/id1460731098 Timestamps Intro 0:00 mvfst-rl 0:40 The Diff 1:20 Tech & Society 1:53 London Mobile Forum 2:19 Sophie Interview - The Guardian 4:48 Andrew Interview - BBC 7:17 Ana Interview - Deliveroo 10:03 Kateryna Interview - Magic Lab 13:20 Stefano Interview - Asos 19:33 Adiba Interview - Moody Month 23:29 Pasquale Interview - Facebook/Litho 29:43 Maria Interview - Deliveroo 34:24 Abdul Interview - Deliveroo 39:36 Outro 44:57 Bloopers 47:28

Every time we get to talk about an open-source project on our podcast, we couldn't be happier. This episode we have Marc to talk about Hermes, an open-source JavaScript engine, optimised for running React Native apps on Android. You can listen to Marc explain why it was necessary to build a JavaScript engine to support the needs of a particular framework and get a glimpse of the architecture and the design decisions behind it. Tune in now for episode 17! Please do send us feedback! You can reach us via email mobilepodcasts@fb.com, Twitter (@insidefbmobile) or Instagram (insidefbmobile). Topics Discussed Hermes: https://hermesengine.dev/ React Native: https://facebook.github.io/react-native/docs/hermes Timestamps Intro 00:05 Interview: Marc 00:57 Hermes Overview 02:25 Design Tradeoffs 07:01 Garbage Collector 11:56 Feature Omissions 15:36 Hermes Technical Design 17:35 Developer Experience 19:23 What's Next? 20:15 Using Hermes Without RN 21:32 Outro 22:28 Bloopers 00:25:50