--- title: Kotlin/Native Concurrency | daily.dev description: A mini-tutorial covering Kotlin/Native's state and concurrency model, explaining the rules around mutable vs. frozen state, global state handling, and advanced... canonical: https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Kotlin/Native Concurrency | daily.dev og:description: A mini-tutorial covering Kotlin/Native's state and concurrency model, explaining the rules around mutable vs. frozen state, global state handling, and advanced... og:url: https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf og:image: https://api.daily.dev/og/posts/Z19SjzEgF.png og:image:alt: Kotlin/Native Concurrency 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. # Kotlin/Native Concurrency **[Touchlab](https://daily.dev/sources/touchlab)** · 8 min read · 0 upvotes · 0 comments ## Summary A mini-tutorial covering Kotlin/Native's state and concurrency model, explaining the rules around mutable vs. frozen state, global state handling, and advanced threading with Worker. Key topics include the freeze() mechanism and its cascading effect on object graphs, @ThreadLocal and @SharedImmutable annotations for global state, how lambdas passed across threads get automatically frozen, and debugging techniques using ensureNeverFrozen() for InvalidMutabilityException and IncorrectDereferenceException errors. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Kotlin Flows in Android: A Clear Mental Model](https://daily.dev/posts/kotlin-flows-in-android-a-clear-mental-model-ln8rffwwm) · Medium · 0 upvotes · 0 comments - [Inside Kotlin Coroutines: State Machines, Continuations, and Structured Concurrency.](https://daily.dev/posts/inside-kotlin-coroutines-state-machines-continuations-and-structured-concurrency--e1itwlfqx) · droidcon · 0 upvotes · 0 comments - [Stop Using Shared Mutable State — Embrace Immutability for Safer Code](https://daily.dev/posts/stop-using-shared-mutable-state-embrace-immutability-for-safer-code-r2wrr0tjn) · Javarevisited · 1 upvotes · 0 comments - [Working in Kotlin: Waiting Around with Coroutines](https://daily.dev/posts/working-in-kotlin-waiting-around-with-coroutines-vjhedyeww) · Atomic Spin · 0 upvotes · 0 comments - [On the Boundaries of Final](https://daily.dev/posts/on-the-boundaries-of-final-ilcxzezrq) · Inside Java · 0 upvotes · 0 comments --- Tags: [#kotlin](https://daily.dev/tags/kotlin) [View this post on daily.dev](https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf) ```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":"Kotlin/Native Concurrency","url":"https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf"},"datePublished":"2026-08-02T07:15:43.669Z","dateModified":"2026-08-02T07:38:51.265Z","description":"A mini-tutorial covering Kotlin/Native's state and concurrency model, explaining the rules around mutable vs. frozen state, global state handling, and advanced...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b8e0c6332ecd76ec09b1d2c642905f9f?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b8e0c6332ecd76ec09b1d2c642905f9f?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Touchlab","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Touchlab","logo":"https://media.daily.dev/image/upload/s--CQ0u6GwB--/f_auto,q_auto/v1785654902/logos/touchlab?_a=BAMAMicg0","url":"https://daily.dev/sources/touchlab"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/kotlin-native-concurrency-z19sjzegf","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"kotlin","timeRequired":"PT8M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Touchlab","item":"https://daily.dev/sources/touchlab"},{"@type":"ListItem","position":3,"name":"Kotlin/Native Concurrency"}]} ```