--- title: How Redis Implements Transactions and How We Implement... description: A walkthrough of how Redis implements transactions using MULTI/EXEC/DISCARD commands, followed by a hands-on implementation of the same behavior in a custom... canonical: https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How Redis Implements Transactions and How We Implement It | Redis Internals | daily.dev og:description: A walkthrough of how Redis implements transactions using MULTI/EXEC/DISCARD commands, followed by a hands-on implementation of the same behavior in a custom... og:url: https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz og:image: https://api.daily.dev/og/posts/ebcwksOhz.png og:image:alt: How Redis Implements Transactions and How We Implement It | Redis Internals 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. # How Redis Implements Transactions and How We Implement It | Redis Internals **[Asli Engineering by Arpit Bhayani](https://daily.dev/sources/asli-engineering)** · 22 min read · 1 upvotes · 0 comments ## Summary A walkthrough of how Redis implements transactions using MULTI/EXEC/DISCARD commands, followed by a hands-on implementation of the same behavior in a custom Redis-like database (DiceDB) written in Go. Key concepts covered include: queuing commands per client, per-client state management using a connected clients hashmap keyed by file descriptor, single-threaded sequential execution guarantees, and the absence of rollback support. The implementation refactors command execution into separate functions to support both buffered and non-buffered output, enabling array responses for EXEC. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#backend](https://daily.dev/tags/backend), [#golang](https://daily.dev/tags/golang), [#redis](https://daily.dev/tags/redis) [View this post on daily.dev](https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz) ```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":"How Redis Implements Transactions and How We Implement It | Redis Internals","url":"https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz"},"datePublished":"2026-06-07T03:19:35.058Z","dateModified":"2026-06-07T03:19:52.930Z","description":"A walkthrough of how Redis implements transactions using MULTI/EXEC/DISCARD commands, followed by a hands-on implementation of the same behavior in a custom...","image":"https://i.ytimg.com/vi/USZAZeuP8Iw/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/USZAZeuP8Iw/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Asli Engineering by Arpit Bhayani","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":"Asli Engineering by Arpit Bhayani","logo":"https://media.daily.dev/image/upload/s--qezTGRtV--/f_auto,q_auto/v1780213733/logos/asli-engineering?_a=BAMAMiWQ0","url":"https://daily.dev/sources/asli-engineering"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-redis-implements-transactions-and-how-we-implement-it-redis-internals-ebcwksohz","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"backend,golang,redis","timeRequired":"PT22M","video":{"@type":"VideoObject","name":"How Redis Implements Transactions and How We Implement It | Redis Internals","description":"A walkthrough of how Redis implements transactions using MULTI/EXEC/DISCARD commands, followed by a hands-on implementation of the same behavior in a custom...","thumbnailUrl":"https://i.ytimg.com/vi/USZAZeuP8Iw/sddefault.jpg","uploadDate":"2026-06-07T03:19:35.058Z","duration":"PT22M","url":"https://api.daily.dev/r/ebcwksOhz","embedUrl":"https://www.youtube.com/embed/USZAZeuP8Iw"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Asli Engineering by Arpit Bhayani","item":"https://daily.dev/sources/asli-engineering"},{"@type":"ListItem","position":3,"name":"How Redis Implements Transactions and How We Implement It | Redis Internals"}]} ```