iOS
Articles on iOS performance, Swift optimization, Xcode tooling, and building fast Apple platform apps.
iOS engineering articles 271–300 of 733
GoTransit: Unifying Our Mobility Products with Public Transportation
Gojek discovered that 11 of their top destinations in Jakarta weren't restaurants or malls. They were train stations and bus hubs.
Scaling Glance Game Centre to Support 100 Million Daily Active Users
Glance Game Centre serves millions of daily users playing HTML5 games on their lock screens. Their leaderboard system hit a wall with a single-node MongoDB struggling under 1000 QPS.
Media on Swiggy's Mobile Apps
Swiggy's mobile apps serve millions of users across wildly different devices and network conditions. How do you deliver high-quality images and videos without killing performance or burning through bandwidth co...
From 30 Minutes Down to 10: Taming our Monolith's CI Build Times
Cash App's monolith CI builds were taking 30 minutes at p50. Developers were stuck waiting through multiple build cycles just to get a green merge.
GraphQL Integration with AWS Amplify in Swift for iOS
Bevan Christian from IDN Engineering just cut through months of AWS Amplify confusion. His approach skips 60% of the official setup steps while keeping full GraphQL power.
Making Direct Messages Reliable and Fast
Instagram DMs handle millions of messages per second. How do they make every send feel instant, even when your network drops mid-tap?
What's New in Swift 5.9 Debugging
Adrian Prantl, Augusto Noronha, and Dave Lee from Apple's Debugger Compiler Integration team just made debugging Swift apps significantly faster. If you're still using the old `p` and `po` commands the same way...
Effortless iOS Snapshot Testing Using Emerge Tools
Handshake's iOS team just eliminated nearly 3,000 lines of testing and demo code. Their secret? Rethinking how they do snapshot testing.
Unlocking SwiftUI at Airbnb
Airbnb just replaced their entire iOS UI framework with SwiftUI. Here's how they pulled off a multi-million line codebase migration without breaking production.
Understanding Publishers in SwiftUI and Combine
Mike Pesate from Bumble breaks down Publishers in SwiftUI and Combine with real-world examples. If you're still confused about when to use CurrentValueSubject vs PassthroughSubject, this one's for you.
Making Swiggy's Order Tracking a Magical Experience
Swiggy discovered customers were anxiously checking their order tracking screen multiple times during the 20-45 minute delivery window. Their solution? Let users track orders while doing literally anything else...
Why Mobile Application Performance Testing Is Key to App Success
Amazon's QA team just shared their playbook for mobile performance testing. Here's what separates apps that scale from those that crash.
Inside Slack: Overcoming Challenges to Craft a Seamless Mobile App
Slack's mobile team faces a unique challenge: users expect desktop-level performance while bouncing between subway tunnels and spotty cellular networks.
Native End-to-End Testing for Mobile Apps
Joana Melo from Klarna turned a 6-month diversity program into company-wide impact by solving a pain point that had defeated multiple engineering teams before her.
GraphQL on iOS: How We Decided Against Apollo & Where We Went Next
Handshake chose NOT to use Apollo for GraphQL on iOS. Here's why that unconventional decision made perfect sense for their team.
Transitioning to SwiftUI
Daniel Roth from Thumbtack rebuilt their entire iOS component library from scratch in SwiftUI. The result? Faster builds, fewer bugs, and a development experience that finally lives up to the hype.
Improving iOS CI/CD Performance: Migrating from Azure to Codemagic
Bevan Christian from IDN Engineering cut iOS CI/CD time by 76.85% with one platform switch. Here's how a simple migration delivered results most teams only dream about.
Making Swiggy Buttery Smooth
Swiggy's iOS team cut their app launch time in half and reduced app size by 8MB. Here's how they did it.
Poko goes multiplatform
Drew Hamilton just took Poko, the Kotlin compiler plugin that generates equals/hashCode/toString, fully multiplatform. This solves a real API compatibility headache for library authors.
Enhancing App Performance: A Practical Approach at Glance
Glance powers lockscreens for millions across India, Indonesia, Latin America, and Japan. Zero tolerance for lag when you're the first thing users see.
Being first to market with rideshare on CarPlay and Android Auto
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
Meta just solved a problem most users never notice: making HDR video look great on billions of devices with wildly different capabilities.
Multiplatform image loading: Coil 3.0
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
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
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.
Preventing App Performance Degradation Due to Sudden Ride Demand Spikes
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.
Leveraging Alamofire Interceptors in iOS: A Real-World Case Study
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.
Optimising Page Load Times in Flipkart Mobile App
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
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
Cash App just open-sourced Turbine 1.0, solving one of the trickiest parts of Kotlin coroutines: testing Flows without the headache.