Idea - Server-Sent Events

Server-Sent Events

New

Backend

Recently came to know about server side event and its support in ASP.net. Lot of my project we had requirement to implement something of this sort. I thought it would be cool if this feature is available in future version of Outsystems.

07 Jun 2019

Tiago Leão

Staff

Changed the category to

Backend

11 Jun 2019

Daniël Kuhlmann

MVP

Merged this idea with 'Native support for Server Sent Events (SSE)' (created on 15 Jan 2026 11:08:38 by Tiago Ribeiro)

16 Jan

Tiago Ribeiro

Champion

When building real-time dashboards in OutSystems, we often have to rely on polling or integrate third-party WebSocket providers to push live updates to the UI. Both approaches add complexity, infrastructure overhead, and maintenance cost.

With the recent addition of native Server-Sent Events (SSE) support in .NET 10, it’s now easier than ever for OutSystems to offer first-class, built-in support for this pattern at the platform level.

15 Jan

Sebastian Krempel

Champion

I support this idea and would like to add/concretize additional aspects:

Native SSE support would enable developers to implement UI updates such as progress indicators, status updates, or notifications in a simple and declarative way, without leaving the platform or integrating external services (alongside with it's complexity).
If SSE is provided as a platform capability, authentication and authorization could be handled consistently by default, which further simplifies implementation and improves security.
Especially with increasing use of AI agents, more server interactions will exceed typical request timeouts and be handled asynchronously. Pushing updates to the UI in these scenarios avoids frequent polling for results stored in entities and reduces unnecessary load on application servers and databases.

15 Jan