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Meta Tech Podcast

Meta Tech Podcast: 87: Everything is Power: Battery Life Engineering for AI Glasses Meta Tech Podcast: 86: A Hard Cell: Engineering Ultra-Narrow Batteries for AI Glasses Meta Tech Podcast: 85: Reel Friends: Building Social Discovery that Scales to Billions Meta Tech Podcast: 84: Trust But Canary: Configuration Safety at Scale Meta Tech Podcast: 83: Patch Me If You Can: AI Codemods for Secure-by-Default Android Apps Meta Tech Podcast: 82: CSS at Scale with StyleX Meta Tech Podcast: 81: From Zero to Polish: Building Meta Ray-Ban Display Meta Tech Podcast: 80: Lowering emissions with the Open Compute Project Meta Tech Podcast: 79: Building Android apps in Meta’s monorepository with Buck2 Meta Tech Podcast: 78: Generating 3D Worlds with AI Meta Tech Podcast: ARCHIVE: What it's like to write code at Meta Meta Tech Podcast: 77: How to build a generic neuromotor interface Meta Tech Podcast: 76: From C to Rust on Mobile Meta Tech Podcast: 75: Open-sourcing Pyrefly - A faster Python type checker written in Rust Meta Tech Podcast: 74: Taking the plunge - The engineering journey of building a Subsea Cable Meta Tech Podcast: 73: Mobile GraphQL at Meta in 2025 Meta Tech Podcast: 72: Multimodal AI for Ray-Ban Meta glasses Meta Tech Podcast: 71: Translating Java to Kotlin at Scale Meta Tech Podcast: 70: Jetpack Compose at Meta Meta Tech Podcast: 68: How to Build a Mixed Reality Headset Meta Tech Podcast: 67: Measuring Developer Productivity with Diff Authoring Time Meta Tech Podcast: 66: Inside Bento - Serverless Jupyter Notebooks at Meta Meta Tech Podcast: 65: Getting Ready for Post-Quantum Cryptography Meta Tech Podcast: 64: Caddy - Building the next generation of CAD software for Mixed Reality Meta Tech Podcast: 63: The key to a happy Rust/C++ relationship Meta Tech Podcast: 62: Building Threads for Web Meta Tech Podcast: 61: Image Quality Improvements at Scale Meta Tech Podcast: 60: Simplified Executable Deployment with DotSlash Meta Tech Podcast: 59: Meta ❤️ Python 3.12 Meta Tech Podcast: 58: Advancing GenAI at Meta Meta Tech Podcast: ARCHIVE: From Facebook Home to Instagram Stories Meta Tech Podcast: 57: Writing and linting Python at scale Meta Tech Podcast: 56: How Threads was built in 5 months Meta Tech Podcast: 55: What it's like to ship code at Meta Meta Tech Podcast: 54: Building Key Transparency at WhatsApp Meta Tech Podcast: 53: Offensive security at Meta’s Red Team X Meta Tech Podcast: 52: The success story behind PyTorch Meta Tech Podcast: 51: Buck2 - a large-scale build system Meta Tech Podcast: 50: De-identified authentication at scale Meta Tech Podcast: 49: Kotlin DevX at Instagram Meta Tech Podcast: 48: A 94% reduction for basic video compute time on Instagram Meta Tech Podcast: 47: Sapling - A scalable, user-friendly source control system Meta Tech Podcast: 46: Cross-Platform Video Calling with RSYS Meta Tech Podcast: 45: Syncing GitHub to Monorepo with Jon Meta Tech Podcast: BONUS: Comparing Company Cultures with Jay Meta Tech Podcast: 44: Building a Cross-App Messaging Platform Meta Tech Podcast: 43: Building for the metaverse with Cami Meta Tech Podcast: 42: Building People-Centric Apps with Maria Meta Tech Podcast: 41: Earth Week Special - Carbon Explorer with Bilge Meta Tech Podcast: 40: Earth Week Special - Green AI with Ramya Meta Tech Podcast: 39: White Labeling Messenger for iOS with Amy Meta Tech Podcast: 38: From Sales to Tech - How Kevin Made The Switch 37: Faster and Smaller Messenger for iOS With Amy Meta Tech Podcast: 36: Developer Experience with Chandrika Meta Tech Podcast: 35: Facebook App Health with Jon Meta Tech Podcast: 34: Open Source Developer Advocacy with Cami Meta Tech Podcast: 33: Switching Teams at FB with Sash Meta Tech Podcast: 32: Measuring UI Quality with Sara, Aaron and Patrik Meta Tech Podcast: 31: Intentional Architecture with Yuan and Dustin Meta Tech Podcast: 30: Linting for Design Quality with Elle Meta Tech Podcast: 29: Design Systems with Sriram Meta Tech Podcast: 28: Modularising iOS Apps with Fabio Meta Tech Podcast: 27: Using Data for Better Android Notifications with Garima Meta Tech Podcast: 26: Kotlin Redux with Thomas Meta Tech Podcast: 25: Instagram Reels with Kevin and Martin Meta Tech Podcast: 24: COVID-19 Hub with Chang, Jarman and Zaven Meta Tech Podcast: 23: Organising the Women of React Remote Conf Meta Tech Podcast: Update: No Interview Episode for March Meta Tech Podcast: 22: Scaling WhatsApp with Silky Meta Tech Podcast: 21: Kotlin at Facebook with Sergey Meta Tech Podcast: 20: droidcon London 2019, Part II Meta Tech Podcast: 19: droidcon London 2019, Part I Meta Tech Podcast: 18: Outside Facebook Mobile at the London Mobile Forum 2019 Meta Tech Podcast: 17: Hermes JS Engine Development with Marc Meta Tech Podcast: 16: React Native Developer Advocacy and Documentation Engineering with Rachel Meta Tech Podcast: 15: Infer Static Analysis for Mobile Apps with Ezgi Meta Tech Podcast: 14: Facebook iOS UI Infrastructure with Adam Meta Tech Podcast: 13: Android UI Infrastructure with Hilal Meta Tech Podcast: 12: Product Management on Workplace with Chiara Meta Tech Podcast: 11: Secure Networking on Android with Subodh Meta Tech Podcast: 10: FBLite and Fast Android Apps for Emerging Markets with Tal Meta Tech Podcast: 9: Android Bytecode Optimisation with Emma Meta Tech Podcast: 8: Android Perf at Instagram with Mona Meta Tech Podcast: 7: Performance and Instrumentation with Ariane Meta Tech Podcast: 6: The Story of Stories with Lillian Meta Tech Podcast: 5: Engineering Management with Balazs Meta Tech Podcast: 4: Product Design with Alisa and Stef Meta Tech Podcast: 3: Release Management with Julia Meta Tech Podcast: 2.5: Quick take on Sonar with Emil Meta Tech Podcast: 2: Facebook Home and Instagram Stories with Will Meta Tech Podcast: 1: Litho and Sections with Mihaela Meta Tech Podcast: 0: Intro
Meta Tech Podcast: 69: To type or not to type — measuring productivity impact with DAT
2024-11-30 · via Meta Tech Podcast

Nov 29, 2024

Do types actually make you more productive or is it just more typing for you to do on the keyboard? That's just one of the questions we managed to answer at least on a small scale with Diff Authoring Time or DAT, here at Meta. Want to know how we leverage metrics to run experiments on productivity in our internal codebase? Tune in to episode 69.

Got feedback? Send it to us on Threads (https://threads.net/@metatechpod), Instagram (https://instagram.com/metatechpod) and don’t forget to follow our host @passy (https://mastodon.social/@passy, and https://threads.net/@passy_). Fancy working with us? Check out https://www.metacareers.com/.

Links

Timestamps

  • Intro 0:06

  • Henri Intro 1:45

  • Ian Intro 3:13

  • Moritz Re-Intro 3:28

  • DAT Recap 3:48

  • What is Hack? 4:20

  • Inner and outer loop 14:13

  • Experimenting with language features 17:47

  • Code sharing frameworks at Meta 27:43

  • Measuring framework productivity 29:01

  • Will we see more experiments? 34:23

  • Time savings from code sharing 37:28

  • Outro 39:03

  • Blooper 39:52