--- title: Server-Sent Events in ASP.NET Core and .NET 10 | daily.dev description: ASP.NET Core 10 introduces native Server-Sent Events (SSE) support as a lightweight alternative to SignalR for one-way real-time updates. SSE uses standard... canonical: https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Server-Sent Events in ASP.NET Core and .NET 10 | daily.dev og:description: ASP.NET Core 10 introduces native Server-Sent Events (SSE) support as a lightweight alternative to SignalR for one-way real-time updates. SSE uses standard... og:url: https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb og:image: https://api.daily.dev/og/posts/RQLN4wisb.png og:image:alt: Server-Sent Events in ASP.NET Core and .NET 10 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. # Server-Sent Events in ASP.NET Core and .NET 10 **[Milan Jovanović](https://daily.dev/sources/milanjovanovic)** · 6 min read · 25 upvotes · 0 comments ## Summary ASP.NET Core 10 introduces native Server-Sent Events (SSE) support as a lightweight alternative to SignalR for one-way real-time updates. SSE uses standard HTTP with the text/event-stream content type, requires no client libraries, and supports automatic browser reconnection. The new Results.ServerSentEvents API works with IAsyncEnumerable to stream data, handles missed events via Last-Event-ID headers, and integrates seamlessly with existing authentication and authorization. SSE is ideal for dashboards, notifications, and progress bars where bidirectional communication isn't needed, while SignalR remains better for complex two-way scenarios. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Real-Time at Last: SSE and SignalR in ASP.NET Core](https://daily.dev/posts/real-time-at-last-sse-and-signalr-in-asp-net-core-hfyl1qquh) · We Are .NET · 0 upvotes · 0 comments - [Streaming Server Events with SSE and Blazor](https://daily.dev/posts/streaming-server-events-with-sse-and-blazor-unnxjczmt) · Telerik · 0 upvotes · 0 comments - [Server-Sent Events: streaming from server to browser](https://daily.dev/posts/server-sent-events-streaming-from-server-to-browser-knzthsbgt) · Flavio Copes · 1 upvotes · 1 comments - [Server-Sent Events vs WebSockets: 2026 Developer Guide](https://daily.dev/posts/server-sent-events-vs-websockets-2026-developer-guide-2lwprquzl) · Alex CloudStar · 0 upvotes · 0 comments - [Server Sent Events](https://daily.dev/posts/server-sent-events-83njlflzt) · RUBYLAND · 2 upvotes · 0 comments --- Tags: [#aspnetcore](https://daily.dev/tags/aspnetcore), [#.net](https://daily.dev/tags/.net), [#server-sent-events](https://daily.dev/tags/server-sent-events) [View this post on daily.dev](https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb) ```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":"Server-Sent Events in ASP.NET Core and .NET 10","url":"https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb"},"datePublished":"2025-12-20T00:28:52.475Z","dateModified":"2026-05-21T02:13:57.250Z","description":"ASP.NET Core 10 introduces native Server-Sent Events (SSE) support as a lightweight alternative to SignalR for one-way real-time updates. SSE uses standard...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f30eb9c40446ea113fc550394e3849a2?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f30eb9c40446ea113fc550394e3849a2?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Milan Jovanović","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":"Milan Jovanović","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/78d8abfb692746538410dee47f93e566","url":"https://daily.dev/sources/milanjovanovic"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/server-sent-events-in-asp-net-core-and-net-10-rqln4wisb","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":25},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"aspnetcore,.net,server-sent-events","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Milan Jovanović","item":"https://daily.dev/sources/milanjovanovic"},{"@type":"ListItem","position":3,"name":"Server-Sent Events in ASP.NET Core and .NET 10"}]} ```