--- title: Incremental Hydration in Angular: Build SSR Apps That... description: Incremental hydration in Angular allows SSR apps to render content instantly while activating interactivity only when needed, reducing the gap between visual... canonical: https://daily.dev/posts/7waiueimq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Incremental Hydration in Angular: Build SSR Apps That Feel Instantly Interactive | daily.dev og:description: Incremental hydration in Angular allows SSR apps to render content instantly while activating interactivity only when needed, reducing the gap between visual... og:url: https://daily.dev/posts/7waiueimq og:image: https://api.daily.dev/og/posts/7WaiueIMQ.png og:image:alt: Post cover image 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. # Incremental Hydration in Angular: Build SSR Apps That Feel Instantly Interactive **[Angular](https://daily.dev/sources/angulardev)** · [@tonyshaji](https://daily.dev/tonyshaji) · 3 upvotes · 0 comments ## Summary Incremental hydration in Angular allows SSR apps to render content instantly while activating interactivity only when needed, reducing the gap between visual rendering (LCP) and interactivity (TTI). Using the @defer block with triggers like 'on idle', 'on viewport', 'on interaction', and 'on hover', developers can control when components hydrate, keeping the main thread free and reducing Total Blocking Time. The technique includes automatic event replay to capture user interactions before hydration completes, requires proper HTML structure to avoid re-rendering, and maintains SEO benefits since content is server-rendered. Implementation involves configuring provideClientHydration with withIncrementalHydration, understanding parent-child hydration hierarchy, and debugging hydration mismatches using Angular DevTools. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [40% Faster Interaction: How Wix Solved React's Hydration Problem with Selective Hydration and Suspense](https://daily.dev/posts/40-faster-interaction-how-wix-solved-react-s-hydration-problem-with-selective-hydration-and-suspen-vvghktv0f) · Wix Engineering · 1 upvotes · 0 comments - [Different hydration and rendering strategies](https://daily.dev/posts/different-hydration-and-rendering-strategies-uy1xqwg3n) · Neciu Dan · 46 upvotes · 4 comments - [Vue SSR Performance Optimization: A Complete Beginner-to-Practical Guide](https://daily.dev/posts/vue-ssr-performance-optimization-a-complete-beginner-to-practical-guide-sdz5hhy9a) · Medium · 3 upvotes · 0 comments - [The right way to architect modern web applications](https://daily.dev/posts/the-right-way-to-architect-modern-web-applications-owyoaycki) · InfoWorld · 2 upvotes · 1 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#performance](https://daily.dev/tags/performance), [#frontend](https://daily.dev/tags/frontend), [#angular](https://daily.dev/tags/angular) [View this post on daily.dev](https://daily.dev/posts/7waiueimq) ```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":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/7waiueimq","headline":"Incremental Hydration in Angular: Build SSR Apps That Feel Instantly Interactive","text":"Shared: Incremental Hydration in Angular: Build SSR Apps That Feel Instantly Interactive","url":"https://daily.dev/posts/7waiueimq","datePublished":"2026-02-09T09:21:28.155Z","dateModified":"2026-02-09T09:21:28.158Z","author":{"@type":"Person","name":"Tony Shaji","url":"https://daily.dev/tonyshaji","image":"https://media.daily.dev/image/upload/s--jc5dd2XL--/f_auto/v1709280537/avatars/avatar_9hfViMhDgT7FdvIvgeKil","description":"Passionate full-stack developer with a focus on Angular, continuously exploring new technologies ","worksFor":{"@type":"Organization","name":"Thomsun Infocare","logo":"https://media.daily.dev/image/upload/s--SdAH218b--/f_auto/v1737127424/companies/thomsuninfocare"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":810}},"image":"https://media.daily.dev/image/upload/s--CxzD6vbw--/f_auto/v1722860399/public/Placeholder%2005","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/IK9pHXhlv"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/angulardev","name":"Angular"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Angular","item":"https://daily.dev/squads/angulardev"},{"@type":"ListItem","position":3,"name":"Incremental Hydration in Angular: Build SSR Apps That Feel Instantly Interactive"}]} ```