Articles about iOS development, Swift, SwiftUI, and mobile engineering best practices.https://vburojevic.dev/en-ushttps://vburojevic.dev/blog/ios-image-loading-caching-decoding-scrolling/https://vburojevic.dev/blog/ios-image-loading-caching-decoding-scrolling/A practical image-loading setup for iOS: cache the right thing, decode off the main thread, control request churn, and stop blaming scrolling jank on the collection view.Wed, 08 Apr 2026 17:30:00 GMTiOSPerformanceNetworkingSwiftUISwifthttps://vburojevic.dev/blog/swiftui-design-system-without-overengineering/https://vburojevic.dev/blog/swiftui-design-system-without-overengineering/A useful SwiftUI design system is not a giant abstraction layer. It is a small set of tokens, components, and rules that make product work faster without hiding the platform or freezing the app in theory.Sun, 05 Apr 2026 17:30:00 GMTiOSSwiftSwiftUIDesign SystemsArchitecturehttps://vburojevic.dev/blog/ios-deep-links-maintainable/https://vburojevic.dev/blog/ios-deep-links-maintainable/A maintainable deep-linking setup comes from one rule: treat links as app routes with typed parsing, ownership boundaries, and tests, not as random URL handling scattered across the codebase.Wed, 01 Apr 2026 17:30:00 GMTiOSSwiftDeep LinkingArchitectureNavigationhttps://vburojevic.dev/blog/snapshot-testing-2026-sane/https://vburojevic.dev/blog/snapshot-testing-2026-sane/Snapshot tests are useful when they protect stable UI or serialization contracts, but they become expensive noise the moment they start standing in for design review, product judgment, or weak lower-level tests.Sun, 29 Mar 2026 17:30:00 GMTiOSTestingXCTestSwiftUIArchitecturehttps://vburojevic.dev/blog/ios-testing-stack-fast-stable/https://vburojevic.dev/blog/ios-testing-stack-fast-stable/A useful iOS testing stack is less about tool choice and more about test boundaries, promotion rules, and keeping slow checks rare enough that people still trust the signal.Wed, 25 Mar 2026 18:30:00 GMTiOSTestingSwiftCIArchitecturehttps://vburojevic.dev/blog/ios-feature-flags-safe-rollouts/https://vburojevic.dev/blog/ios-feature-flags-safe-rollouts/A practical feature flag setup for iOS: separate release, experiment, and kill-switch flags, keep evaluation deterministic, and avoid the cleanup debt that turns rollout safety into product entropy.Sun, 22 Mar 2026 18:30:00 GMTiOSFeature FlagsSwiftRelease EngineeringReliabilityhttps://vburojevic.dev/blog/ios-background-tasks-2026/https://vburojevic.dev/blog/ios-background-tasks-2026/A practical guide to background work on iOS in 2026: where BGTaskScheduler helps, where the system throttles you, and how to design refresh and processing flows that stay reliable on real devices.Wed, 18 Mar 2026 18:30:00 GMTiOSBackground TasksSwiftPerformanceReliabilityhttps://vburojevic.dev/blog/sendable-pitfalls-redesign-safely/https://vburojevic.dev/blog/sendable-pitfalls-redesign-safely/Swift 6 surfaces Sendable problems exactly where values cross isolation boundaries. Here is what usually breaks, how to classify each error, and how to redesign ownership without hiding the problem behind @unchecked Sendable.Tue, 17 Mar 2026 01:32:00 GMTSwiftSwift 6ConcurrencySendableiOShttps://vburojevic.dev/blog/actors-in-practice-safe-shared-state/https://vburojevic.dev/blog/actors-in-practice-safe-shared-state/A practical guide to Swift actors: where they help, where they hurt, and how to isolate shared state without turning your app into async soup.Wed, 11 Mar 2026 18:30:00 GMTSwiftSwift 6ConcurrencyActorsiOShttps://vburojevic.dev/blog/swift6-strict-concurrency-migration/https://vburojevic.dev/blog/swift6-strict-concurrency-migration/A practical migration plan for Swift 6 strict concurrency: baseline warnings, isolate boundaries, fix Sendable issues, and tighten checks without stalling delivery.Sun, 08 Mar 2026 18:30:00 GMTSwiftSwift 6ConcurrencyiOSMigrationhttps://vburojevic.dev/blog/swiftui-lists-that-dont-lag/https://vburojevic.dev/blog/swiftui-lists-that-dont-lag/Most SwiftUI list “performance problems” are self-inflicted: unstable identity, accidental view churn, and heavy layout work in rows. Here’s how to make lists fast, measurable, and boring.Thu, 05 Mar 2026 18:30:00 GMTiOSSwiftSwiftUIPerformancehttps://vburojevic.dev/blog/agents-md-for-ios/https://vburojevic.dev/blog/agents-md-for-ios/Treat AI as a powerful, unreliable teammate. An AGENTS.md file gives it constraints, workflows, and verification steps that keep your iOS codebase stable and your PRs reviewable.Sun, 01 Mar 2026 18:30:00 GMTiOSSwiftXcodeAIAutomationEngineering Managementhttps://vburojevic.dev/blog/ios-slash-commands-that-save-hours/https://vburojevic.dev/blog/ios-slash-commands-that-save-hours/Turn repetitive iOS workflows into reliable one-liners. Define a small set of slash commands that run the right builds, tests, and checks, and generate release notes without ceremony.Wed, 25 Feb 2026 18:30:00 GMTiOSSwiftXcodeCIAutomationPerformancehttps://vburojevic.dev/blog/codex-workflow-for-ios/https://vburojevic.dev/blog/codex-workflow-for-ios/A practical Codex-assisted workflow for iOS teams: define guardrails, run tight build and test loops, measure impact, and ship changes without breaking CI.Sun, 22 Feb 2026 18:30:00 GMTiOSSwiftXcodeCICodexAutomationhttps://vburojevic.dev/blog/ios-networking-typed-endpoints-observability/https://vburojevic.dev/blog/ios-networking-typed-endpoints-observability/A practical URLSession setup that scales: typed endpoints and decoding, retry rules that do not create duplicate side effects, and lightweight logging/metrics so you can measure reliability and latency.Wed, 18 Feb 2026 18:30:00 GMTiOSNetworkingSwiftURLSessionObservabilityhttps://vburojevic.dev/blog/ios-testing-fast-and-stable/https://vburojevic.dev/blog/ios-testing-fast-and-stable/A pragmatic iOS testing setup: keep unit tests fast, make UI tests stable, and add one verification loop that catches regressions without turning CI into a lottery.Sun, 15 Feb 2026 18:30:00 GMTiOSTestingXCTestCISwifthttps://vburojevic.dev/blog/ios-app-launch-performance-2026/https://vburojevic.dev/blog/ios-app-launch-performance-2026/A practical way to measure iOS cold start and ship improvements: define a first-frame budget, diagnose the common failure modes, and verify changes with repeatable runs.Wed, 11 Feb 2026 18:30:00 GMTiOSPerformanceLaunchInstrumentsSwifthttps://vburojevic.dev/blog/storekit-subscriptions-real-world/https://vburojevic.dev/blog/storekit-subscriptions-real-world/A practical StoreKit 2 approach for subscription gating that survives renewals, grace periods, restores, and the weird stuff you only see after launch.Tue, 10 Feb 2026 19:20:00 GMTiOSStoreKitStoreKit2SubscriptionsSwifthttps://vburojevic.dev/blog/swiftui-animations-transactions/https://vburojevic.dev/blog/swiftui-animations-transactions/A practical SwiftUI animation guide: how transactions actually work, why animations disappear, and how to ship smooth UI without expensive re-renders.Sun, 01 Feb 2026 22:30:00 GMTSwiftUIAnimationPerformanceiOSSwifthttps://vburojevic.dev/blog/swiftui-observation-performance/https://vburojevic.dev/blog/swiftui-observation-performance/Practical patterns for @Observable, avoiding accidental invalidations, and proving performance wins with measurement (not vibes).Sun, 01 Feb 2026 21:30:00 GMTSwiftUIObservationPerformanceiOSSwifthttps://vburojevic.dev/blog/swift-concurrency-async-await-actors/https://vburojevic.dev/blog/swift-concurrency-async-await-actors/Practical Swift concurrency patterns for async/await, actors, MainActor, Sendable, cancellation, and building responsive iOS apps without data races.Wed, 28 Jan 2026 09:00:00 GMTSwiftConcurrencyiOSAsync Await