how SignalR works for internal (in-app) notifications

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ICSM Computer · Answer

How SignalR Works – Notification Process
1. Client Connects to Server
When a user opens the application (web or mobile), their browser/app establishes a
SignalR connection with the server.SignalR chooses the best transport method available (WebSockets preferred).
2. User Authentication
If the app uses authentication (cookies, JWT), SignalR ties the connection to that
authenticated user.This allows the server to identify users by their unique ID (e.g., user ID or username).
3. User ID Mapping (Optional but Common)
On connection, SignalR automatically links the user’s connection to their identity.This enables targeted messaging, like notifying a specific user.
4. Event Happens on Server
Something happens in the backend (e.g., a task is assigned, a message is received, a status is updated).The server determines who needs to be notified.
5. Server Sends Notification
The server uses SignalR to push a message to:
All users (broadcast)A specific user (based on ID)A group (e.g., all admins, all users in a team)
6. Client Receives the Notification
The client listens for notification events (e.g., ReceiveNotification).When it receives one, it shows a pop-up, toast, or
badge count in real-time — without refreshing the page.
7. User Interacts with Notification
User may click the notification, open a detail view, mark it as read, etc.You can store these notifications in a database to track which ones are read/unread.
Summary
Step
Description
1.
Client connects to SignalR hub
2.
Server recognizes the user
3.
A backend event triggers a notification
4.
Server sends message to the right client(s)
5.
Client receives and displays the notification instantly

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how SignalR works for internal (in-app) notifications

ICSM Computer

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1 Answers

How SignalR Works – Notification Process

1. Client Connects to Server

2. User Authentication

3. User ID Mapping (Optional but Common)

4. Event Happens on Server

5. Server Sends Notification

6. Client Receives the Notification

7. User Interacts with Notification

Summary

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Step	Description
1.	Client connects to SignalR hub
2.	Server recognizes the user
3.	A backend event triggers a notification
4.	Server sends message to the right client(s)
5.	Client receives and displays the notification instantly