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Mobile The Future Is Declarative

Company: Sentry · Dec 7, 2022
Platform: Android / iOS

Lazar Nikolov explores why Android and iOS are finally catching up to React Native and Flutter. The shift to declarative UI is reshaping native mobile development.

Snap Research just proved that Vision Transformers can run as fast as MobileNet on actual mobile devices. Yes, really.

Rodrigo Pintos from Mercado Libre reveals how they're tackling a massive problem: keeping 120 million active users happy while their app keeps growing. Their solution? Put the app on a diet.

Zomato's Android app was slow. Their network layer was the bottleneck, costing them speed, bandwidth, and user patience.

Swiggy App on Diet

Company: Swiggy · Nov 22, 2022
Platform: iOS / Android

Swiggy slashed their Android app size by 22.6% in just one day. Here's how they did it without the usual complexity.

Retrofitting null-safety onto Java at Meta

Company: Meta · Nov 22, 2022
Platform: Android

Meta tackled the billion-dollar mistake: NullPointerExceptions causing 27% of their Android crashes. Here's how they retrofitted null-safety onto millions of lines of Java without rewriting everything.

OKLayoutInflater

Company: OkCredit · Nov 22, 2022
Platform: Android

OkCredit's Android team was hitting a wall: complex XML layouts were causing frozen frames and ANRs. AndroidX's AsyncLayoutInflater wasn't cutting it.

How We Sped Up Zipline Hot Reload

Company: Cash App · Nov 21, 2022
Platform: Android

Cash App's team turned a frustrating 20-second hot reload into a blazing 2.7 seconds. Here's how they systematically hunted down every millisecond.

rolgalan from Glovo tackles a question mobile teams keep asking: how do you actually use DORA metrics when you don't control app distribution? Turns out, the answer isn't to abandon them—it's to adapt them.

Improving the Player on Android

Company: Pinterest · Nov 15, 2022
Platform: Android

Pinterest's Android team faced a unique challenge: playing multiple videos simultaneously in a two-column grid without killing performance. Here's how they optimized ExoPlayer to handle it.

Swiggy shipped voice search in just 2 weeks and now drives 2,500+ incremental orders daily. Here's how they built it fast without sacrificing quality.

Improving Auto Pause for Everyone

Company: Strava · Nov 15, 2022
Platform: iOS / Android

Strava's engineering team faced a deceptively hard problem: how do you automatically detect when a runner stops moving without draining their battery or showing the wrong pace?

Klarna's A/B testing platform needed single-digit millisecond latency at 99.9%. Their Node.js service was spiking to seconds under load.

Rodrigo Pintos from Mercado Libre reveals how they tackled a critical problem: keeping 120M active users from uninstalling their app due to storage constraints. Their solution? Putting their Android app on a di...

Veyndan Stuart from Cash App just open-sourced a solution to one of mobile development's most annoying problems: writing pagination logic twice for Android and iOS.

Scaling Mobile Device Management

Company: Uber · Nov 3, 2022
Platform: iOS / Android

Uber's Client Platform Engineering team faced a massive challenge: rolling out MDM to 20,000+ employees across hundreds of global offices where standard Apple enrollment wouldn't work everywhere.

Yi Yang from Google reveals why your Android performance measurements might be completely wrong. Debug builds can show 2-3x worse performance than what users actually experience.

Spotify migrated 2,200+ mobile components and moved their entire iOS/Android codebase to Bazel across 100+ squads. Here's how they survived the chaos.

From zero to 10 million lines of Kotlin

Company: Meta · Oct 24, 2022
Platform: Android

Meta just migrated 10+ million lines of Android code from Java to Kotlin across Facebook, Instagram, and Messenger. Here's how they automated the impossible.

Planting Trees One Ride at a Time

Company: Gojek · Oct 20, 2022
Platform: iOS / Android

Gojek turned ride-hailing into climate action with a simple toggle. One developer said it best: 'For the first time in my life, writing code generated physical outputs.'

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