--- title: Build Real-time Applications with the new "watch" API in... description: Deno KV introduces the 'watch' API, which simplifies building real-time applications such as social media newsfeeds, chat applications, and collaborative... canonical: https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Build Real-time Applications with the new "watch" API in Deno KV | daily.dev og:description: Deno KV introduces the 'watch' API, which simplifies building real-time applications such as social media newsfeeds, chat applications, and collaborative... og:url: https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx og:image: https://api.daily.dev/og/posts/kYWwySnqx.png og:image:alt: Build Real-time Applications with the new "watch" API in Deno KV 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. # Build Real-time Applications with the new "watch" API in Deno KV **[Deno](https://daily.dev/sources/deno)** · 4 min read · 6 upvotes · 0 comments ## Summary Deno KV introduces the 'watch' API, which simplifies building real-time applications such as social media newsfeeds, chat applications, and collaborative editors. The API allows developers to listen to changes in Deno KV keys and provides examples of how it can be used along with server-side events or websockets. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#cloud](https://daily.dev/tags/cloud), [#server-sent-events](https://daily.dev/tags/server-sent-events), [#webdev](https://daily.dev/tags/webdev) [View this post on daily.dev](https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx) ```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":"Build Real-time Applications with the new \"watch\" API in Deno KV","url":"https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx"},"datePublished":"2023-12-11T16:05:24.525Z","dateModified":"2026-05-21T02:14:41.364Z","description":"Deno KV introduces the 'watch' API, which simplifies building real-time applications such as social media newsfeeds, chat applications, and collaborative...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/55a70d00491d7315374d6d5c2a263df8?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/55a70d00491d7315374d6d5c2a263df8?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Deno","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":"Deno","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/714ae5897f174e6c9c7ce75db092f9ce","url":"https://daily.dev/sources/deno"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/build-real-time-applications-with-the-new-watch-api-in-deno-kv-kywwysnqx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":6},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"cloud,server-sent-events,webdev","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Deno","item":"https://daily.dev/sources/deno"},{"@type":"ListItem","position":3,"name":"Build Real-time Applications with the new \"watch\" API in Deno KV"}]} ```