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Glance powers lockscreens for millions across India, Indonesia, Latin America, and Japan. Zero tolerance for lag when you're the first thing users see.

Michael Ramdatt and the Lyft team reveal how they beat every competitor to launch the first rideshare app on CarPlay and Android Auto. The secret? Building their own mapping platform from scratch.

Bringing HDR video to Reels

Company: Meta · Jul 17, 2023
Platform: iOS / Android

Meta just solved a problem most users never notice: making HDR video look great on billions of devices with wildly different capabilities.

Colin White reveals how Coil 3.0 is breaking free from Android to become truly multiplatform. The image loading library that powers countless Android apps is making a bold leap to iOS, web, and desktop.

Migrating to Apollo 1.0 for iOS

Company: Thumbtack · Jul 12, 2023
Platform: iOS

Scott Southerland from Thumbtack reveals how their iOS app hit a breaking point: 8-minute builds, mysterious crashes, and 80,000-line auto-generated files that finally stopped compiling altogether.

Introducing Swift HTTP Types

Company: Swift.org · Jul 10, 2023
Platform: iOS

Apple just open-sourced Swift HTTP Types, and it's about to change how iOS and server-side Swift developers handle HTTP. No more converting between URLRequest and SwiftNIO types.

Grab's engineering team faced a brutal problem: rain in Southeast Asia would crash their entire ride-hailing system. When demand spiked locally, users everywhere suffered.

Bevan Christian uncovered why users were mysteriously logged out of a major startup's iOS app for years. The culprit? A homegrown token refresh mechanism that created race conditions nobody noticed.

Flipkart shaved 30% off page load times in their React Native app with 500M weekly visits. Here's how they did it without rewriting everything.

Page not found - Engineering at Meta

Company: Meta · Jun 22, 2023
Platform: iOS / Android

Meta's Engineering blog just hit a 404. Sometimes even the biggest tech companies deal with broken links and content migrations.

Flow testing with Turbine

Company: Cash App · Jun 21, 2023
Platform: iOS / Android

Cash App just open-sourced Turbine 1.0, solving one of the trickiest parts of Kotlin coroutines: testing Flows without the headache.

Improving Video Cache Hits on Swiggy Apps

Company: Swiggy · Jun 20, 2023
Platform: iOS / Android

Swiggy was bleeding money on video bandwidth costs. The culprit? Videos being requested at 270px, 272px, 275px... you get the idea.

Distributed Load Testing Using Locust

Company: Glance · Jun 15, 2023
Platform: iOS / Android

Glance's engineering team scaled their load testing from basic scripts to a full Kubernetes-powered distributed system. Here's how they did it with Locust.

Timotius Leonardo Lianoto from IDN Engineering discovered his iOS app was reporting 13 MB for a 2.8 MB photo. The culprit? A common mistake thousands of developers make when calculating image file sizes.

Bevan Christian from IDN Engineering tackles a problem every mobile team faces: beautiful Lottie animations that bloat your app size. His solution? On-Demand Resources that cut initial download size while keepi...

Timotius Leonardo Lianoto from IDN Media discovered their livestream gift animations were silently eating memory with every play. Even following Lottie's official docs didn't prevent the leak.

Patrick Tyska and Terry Yiu from Cash App reveal how the same $1,000 needs to display four different ways across their app. Their solution? Kotlin Multiplatform to consolidate 10 separate money formatters into ...

Instagram engineers were losing hours every day waiting for code to compile. So they brought React Native's ⌘R instant refresh experience to native iOS.

Md Al Mamun and Michael Thole from DoorDash reveal how their 100+ engineer iOS team eliminated project merge conflicts entirely. The secret? A command-line tool that turns hours of painful XML debugging into se...

Network Latency Issues in Mobile Apps

Company: Datadog · May 26, 2023
Platform: Android / iOS

Anatole Beuzon and Bowen Chen from Datadog turned what seemed like a simple deployment alert into a months-long debugging odyssey. What they uncovered reveals how deceptively complex network latency issues can ...

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