--- title: Zero-Latency Quizzing: How P2P Replication Solved the... description: A developer built KahootP2P, an iOS quiz game that runs entirely over local peer-to-peer networking with no internet dependency. Using Couchbase Lite... canonical: https://daily.dev/posts/zero-latency-quizzing-how-p2p-replication-solved-the-conference-wi-fi-problem-kpfm5tq4n twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Zero-Latency Quizzing: How P2P Replication Solved the Conference Wi-Fi Problem | daily.dev og:description: A developer built KahootP2P, an iOS quiz game that runs entirely over local peer-to-peer networking with no internet dependency. Using Couchbase Lite... og:url: https://daily.dev/posts/zero-latency-quizzing-how-p2p-replication-solved-the-conference-wi-fi-problem-kpfm5tq4n og:image: https://api.daily.dev/og/posts/kpFM5tq4n.png og:image:alt: Zero-Latency Quizzing: How P2P Replication Solved the Conference Wi-Fi Problem 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. # Zero-Latency Quizzing: How P2P Replication Solved the Conference Wi-Fi Problem **[Couchbase](https://daily.dev/sources/couchbase)** · 9 min read · 0 upvotes · 0 comments ## Summary A developer built KahootP2P, an iOS quiz game that runs entirely over local peer-to-peer networking with no internet dependency. Using Couchbase Lite Enterprise's P2P replication and Bonjour for device discovery, the app solves the conference Wi-Fi bottleneck problem by keeping all data traffic local. The architecture models game state as Couchbase Lite documents — questions, answers, scores, and leaderboard — with bidirectional replication between a host device and player devices in a star topology. The post covers device discovery via Bonjour, scoring with the host's monotonic clock to avoid NTP dependency, reactive UI with Combine, and Codable integration for clean Swift model mapping. End-to-end latency from host action to player screen update is under 100ms on local Wi-Fi. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [When the Internet Goes Down, Your Business Shouldn’t](https://daily.dev/posts/when-the-internet-goes-down-your-business-shouldn-t-ai2sxv1a1) · Couchbase · 0 upvotes · 0 comments - [Build a Real-Time Collaborative Notes App with Replicache](https://daily.dev/posts/build-a-real-time-collaborative-notes-app-with-replicache-xiutpfqs9) · Telerik · 0 upvotes · 0 comments - [We Mass-Deployed 15-Year-Old Screen Sharing Technology and It's Actually Better](https://daily.dev/posts/we-mass-deployed-15-year-old-screen-sharing-technology-and-it-s-actually-better-qldjxorao) · HelixML · 35 upvotes · 2 comments - [Behind the Streams: Real-Time Recommendations for Live Events Part 3](https://daily.dev/posts/behind-the-streams-real-time-recommendations-for-live-events-part-3-5u7i82cck) · Netflix TechBlog · 46 upvotes · 0 comments --- Tags: [#swift](https://daily.dev/tags/swift), [#peer-to-peer](https://daily.dev/tags/peer-to-peer), [#offline-first](https://daily.dev/tags/offline-first) [View this post on daily.dev](https://daily.dev/posts/zero-latency-quizzing-how-p2p-replication-solved-the-conference-wi-fi-problem-kpfm5tq4n) ```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":"Zero-Latency Quizzing: How P2P Replication Solved the Conference Wi-Fi Problem","url":"https://daily.dev/posts/zero-latency-quizzing-how-p2p-replication-solved-the-conference-wi-fi-problem-kpfm5tq4n","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/zero-latency-quizzing-how-p2p-replication-solved-the-conference-wi-fi-problem-kpfm5tq4n"},"datePublished":"2026-07-09T07:51:54.476Z","dateModified":"2026-07-09T07:53:05.627Z","description":"A developer built KahootP2P, an iOS quiz game that runs entirely over local peer-to-peer networking with no internet dependency. 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