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.

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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