How Big-Name Companies Check Username Availability in Milliseconds
It is not a search, it is a keyed existence lookup. How indexes, Bloom filters, and caches make the check instant, and why correctness lives somewhere else entirely.
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Articles
Writing on Swift 6 concurrency, SDK architecture, and shipping production iOS frameworks.
From 0 to over 1,000 Unit Tests: The DI Framework Behind It
Why I built OrbitCore, an open-source Swift DI container with three retain policies, thread-safe lazy injection, and a test pattern that scaled past 1,000 unit tests.
How I Built an Offline Photo Geocoding Engine That Clusters 8,000 Photos in Under 5 Seconds
Replacing Apple CLGeocoder with embedded GeoNames data, a K-D Tree, and a chain expansion algorithm to geocode and cluster thousands of photos offline in seconds.
6 Problems With NSLocalizedString That Made Me Build LocalizationEngine SDK
Why Apple's built-in localization tools fall short for multi-language iOS apps, and the open-source Swift Package I built to fix them.
Implementing Apple App Attest for iOS API Security - No More Static Secrets
How Apple App Attest replaces static shared secrets with per-device hardware keys in the Secure Enclave to secure iOS API requests.
From Network Chaos to Cached Harmony
How I replaced scattered, redundant contact API calls with a multi-layered, reactive caching architecture in a SwiftUI app using Clean Architecture.
How I Stopped a Silent Memory Leak in My iOS App
How I diagnosed a silent SwiftUI memory leak, achieved 85% memory reduction on tab switches, and open-sourced a real-time memory profiler.
EventHorizon - A thread-safe networking layer in Swift with Sendable and async-await
EventHorizon is a lightweight, thread-safe Swift package for building a clean, type-safe network communication layer with Swift 6, Sendable and async/await.
The important difference between RunLoop.main and DispatchQueue.main
Why a Combine pipeline can pause UI updates during scrolling, and how the choice between RunLoop.main and DispatchQueue.main on receive(on:) affects value delivery.
Understanding Concurrency in Swift 6 with Sendable protocol, MainActor, and async-await
A practical guide to Swift 6 concurrency: async/await, MainActor, the Sendable protocol, actors, TaskGroup, and more for safe, modern asynchronous code.
Building a generic, thread-safe Networking Layer in Swift 6 with Interceptors
Build a generic, thread-safe networking layer in Swift 6 using the EventHorizon package, with async/await, Sendable, and network interceptors.
Building the Airbnb Host Passport view in Swift 5.9 on iOS
Recreating the Airbnb Host Passport as a flippable, book-like multi-page view in UIKit using transparent views and CATransform3D 3D rotations.
Drawing a Gauge View with Swift 5.9 on iOS
Building a custom UIKit GaugeViewXK using CAShapeLayer, CAGradientLayer, CADisplayLink, and trigonometry to draw an animated, gradient gauge.