--- title: Kotlin Design Patterns: Flyweight | daily.dev description: The Flyweight design pattern is used to balance memory usage in an app by reusing objects from a pool of similar objects. It can save memory and CPU in object... canonical: https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Kotlin Design Patterns: Flyweight | daily.dev og:description: The Flyweight design pattern is used to balance memory usage in an app by reusing objects from a pool of similar objects. It can save memory and CPU in object... og:url: https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens og:image: https://api.daily.dev/og/posts/3x99pyENs.png og:image:alt: Kotlin Design Patterns: Flyweight 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 Design Patterns: Flyweight **[ProAndroidDev](https://daily.dev/sources/pand)** · 3 min read · 4 upvotes · 0 comments ## Summary The Flyweight design pattern is used to balance memory usage in an app by reusing objects from a pool of similar objects. It can save memory and CPU in object creation, but there are tradeoffs in managing object removal and memory allocation. An example of using the Flyweight pattern is to save memory when using the same image throughout multiple places on a screen. Implementation of the pattern involves a Factory class and using it to create objects. The example also presents a synchronization problem and suggests using a Mutex to fix it. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#design-patterns](https://daily.dev/tags/design-patterns), [#kotlin](https://daily.dev/tags/kotlin) [View this post on daily.dev](https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens) ```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 Design Patterns: Flyweight","url":"https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens"},"datePublished":"2024-05-07T16:05:26.291Z","dateModified":"2025-12-08T02:16:15.094Z","description":"The Flyweight design pattern is used to balance memory usage in an app by reusing objects from a pool of similar objects. It can save memory and CPU in object...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c99b59a8c1d5509edd5e2c80d12c52e7?_a=AQAEuiZ","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c99b59a8c1d5509edd5e2c80d12c52e7?_a=AQAEuiZ","isAccessibleForFree":true,"articleSection":"ProAndroidDev","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":"ProAndroidDev","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/656c1eb1f1ef4f91936e86fc16545114","url":"https://daily.dev/sources/pand"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/kotlin-design-patterns-flyweight-3x99pyens","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"design-patterns,kotlin","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ProAndroidDev","item":"https://daily.dev/sources/pand"},{"@type":"ListItem","position":3,"name":"Kotlin Design Patterns: Flyweight"}]} ```