Senior iOS engineer and SDK architect. I build production Swift SDKs and ship App Store apps. Articles on Swift 6 concurrency, SDK design, and iOS architecture.https://egzonpllana.github.io/en-usAstro (build iq9zxzxiq9zxzxiqiq9zxzxzx9zxiq)https://egzonpllana.github.io/articles/username-availability-milliseconds/https://egzonpllana.github.io/articles/username-availability-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.Tue, 14 Jul 2026 00:00:00 GMTSystems DesignBloom FiltersDatabasesCachingDistributed Systemsdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/from-0-to-1000-unit-tests-di-framework/https://egzonpllana.github.io/articles/from-0-to-1000-unit-tests-di-framework/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.Thu, 07 May 2026 00:00:00 GMTSwiftiOSDependency InjectionUnit TestingClean Architecturedocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/offline-photo-geocoding-engine/https://egzonpllana.github.io/articles/offline-photo-geocoding-engine/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.Fri, 10 Apr 2026 00:00:00 GMTSwiftiOSGeocodingK-D TreeSpatial Searchdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/six-problems-with-nslocalizedstring/https://egzonpllana.github.io/articles/six-problems-with-nslocalizedstring/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.Sun, 08 Mar 2026 00:00:00 GMTiOSSwiftLocalizationSwiftUIMobile App Developmentdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/apple-app-attest-ios-api-security/https://egzonpllana.github.io/articles/apple-app-attest-ios-api-security/How Apple App Attest replaces static shared secrets with per-device hardware keys in the Secure Enclave to secure iOS API requests.Fri, 13 Feb 2026 00:00:00 GMTSwiftSecurityAppleCertificate AttestationiOSdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/from-network-chaos-to-cached-harmony/https://egzonpllana.github.io/articles/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.Mon, 11 Aug 2025 00:00:00 GMTSwiftiOSClean ArchitectureCachingCombinedocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/stopping-a-silent-memory-leak-ios/https://egzonpllana.github.io/articles/stopping-a-silent-memory-leak-ios/How I diagnosed a silent SwiftUI memory leak, achieved 85% memory reduction on tab switches, and open-sourced a real-time memory profiler.Sun, 27 Jul 2025 00:00:00 GMTSwiftiOSSwiftUIMemory ManagementCombinedocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/eventhorizon-thread-safe-networking-swift/https://egzonpllana.github.io/articles/eventhorizon-thread-safe-networking-swift/EventHorizon is a lightweight, thread-safe Swift package for building a clean, type-safe network communication layer with Swift 6, Sendable and async/await.Wed, 09 Apr 2025 00:00:00 GMTiOSSwiftNetworkingConcurrencyasync-awaitdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/runloop-main-vs-dispatchqueue-main/https://egzonpllana.github.io/articles/runloop-main-vs-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.Wed, 09 Oct 2024 00:00:00 GMTSwiftCombineiOSConcurrencySwiftUIdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/understanding-concurrency-swift-6-sendable-mainactor/https://egzonpllana.github.io/articles/understanding-concurrency-swift-6-sendable-mainactor/A practical guide to Swift 6 concurrency: async/await, MainActor, the Sendable protocol, actors, TaskGroup, and more for safe, modern asynchronous code.Sun, 25 Aug 2024 00:00:00 GMTSwiftiOSConcurrencyasync-awaitSendabledocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/thread-safe-networking-layer-swift-6-interceptors/https://egzonpllana.github.io/articles/thread-safe-networking-layer-swift-6-interceptors/Build a generic, thread-safe networking layer in Swift 6 using the EventHorizon package, with async/await, Sendable, and network interceptors.Sun, 25 Aug 2024 00:00:00 GMTSwiftAsync AwaitSendableGenericsNetworkingdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/airbnb-host-passport-view-swift/https://egzonpllana.github.io/articles/airbnb-host-passport-view-swift/Recreating the Airbnb Host Passport as a flippable, book-like multi-page view in UIKit using transparent views and CATransform3D 3D rotations.Sat, 17 Aug 2024 00:00:00 GMTSwiftiOSUIKit3D AnimationCore Animationdocpllana@gmail.com (Egzon Pllana)https://egzonpllana.github.io/articles/drawing-a-gauge-view-swift/https://egzonpllana.github.io/articles/drawing-a-gauge-view-swift/Building a custom UIKit GaugeViewXK using CAShapeLayer, CAGradientLayer, CADisplayLink, and trigonometry to draw an animated, gradient gauge.Fri, 02 Aug 2024 00:00:00 GMTSwiftiOSUIKitCore AnimationMathematicsdocpllana@gmail.com (Egzon Pllana)