--- title: A SwiftUI app where background DB cleanup caused issues... description: A SwiftUI app experienced intermittent UI freezes caused by a background database compaction task sharing the same store file with the main thread. The root... canonical: https://daily.dev/posts/a-swiftui-app-where-background-db-cleanup-caused-issues-weeks-later-what-happened-there--5o7nao8c8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A SwiftUI app where background DB cleanup caused issues weeks later, what happened there? | daily.dev og:description: A SwiftUI app experienced intermittent UI freezes caused by a background database compaction task sharing the same store file with the main thread. The root... og:url: https://daily.dev/posts/a-swiftui-app-where-background-db-cleanup-caused-issues-weeks-later-what-happened-there--5o7nao8c8 og:image: https://api.daily.dev/og/posts/5O7NaO8c8.png og:image:alt: A SwiftUI app where background DB cleanup caused issues weeks later, what happened there? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A SwiftUI app where background DB cleanup caused issues weeks later, what happened there? **[Rebeloper](https://daily.dev/sources/rebeloper)** · 1 min read · 0 upvotes · 0 comments ## Summary A SwiftUI app experienced intermittent UI freezes caused by a background database compaction task sharing the same store file with the main thread. The root cause was lack of isolation: the background job ran while the app could still reopen the same store, occasionally causing brief locks that manifested as random scroll freezes. The fix was strict isolation, giving the background job its own store file to prevent shared state contention. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [A “Native” Debate Over SwiftUI Animation -- Fatbobman's Swift Weekly \#154](https://daily.dev/posts/a-native-debate-over-swiftui-animation----fatbobman-s-swift-weekly-154-as4l3it3z) · Fatbobman · 0 upvotes · 0 comments --- Tags: [#database](https://daily.dev/tags/database), [#ios](https://daily.dev/tags/ios), [#swiftui](https://daily.dev/tags/swiftui) [View this post on daily.dev](https://daily.dev/posts/a-swiftui-app-where-background-db-cleanup-caused-issues-weeks-later-what-happened-there--5o7nao8c8) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A SwiftUI app where background DB cleanup caused issues weeks later, what happened there?","url":"https://daily.dev/posts/a-swiftui-app-where-background-db-cleanup-caused-issues-weeks-later-what-happened-there--5o7nao8c8","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-swiftui-app-where-background-db-cleanup-caused-issues-weeks-later-what-happened-there--5o7nao8c8"},"datePublished":"2026-03-12T07:12:31.425Z","dateModified":"2026-03-12T07:12:45.964Z","description":"A SwiftUI app experienced intermittent UI freezes caused by a background database compaction task sharing the same store file with the main thread. 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