congiuluc/notification-backend
skills/notification-backend/SKILL.md
Implement backend real-time notifications with SignalR, push patterns, and notification persistence. Use when: setting up SignalR hubs, broadcasting events to connected clients, sending targeted user notifications, or building a notification storage and retrieval system.
tools
Updated Apr 16, 2026
$ install --global
skillsauthnpx skillsauth add congiuluc/my-awesome-copilot notification-backendInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 16, 2026, 1:22 PM5.2s2 files scanned
SKILL.md
- name:
- notification-backend
- description:
- >-
- notification persistence. Use when:
- setting up SignalR hubs, broadcasting
- argument-hint:
- Describe the notification scenario (broadcast, user-targeted, event-driven).
Backend Notifications (.NET / SignalR)
When to Use
- Sending real-time push notifications to connected frontend clients
- Broadcasting system-wide events (maintenance, announcements)
- Sending targeted notifications to specific users or groups
- Building a notification history/inbox with persistence
- Triggering notifications from background jobs or domain events
Official Documentation
- ASP.NET Core SignalR
- SignalR Hubs
- SignalR Groups
- SignalR Authentication
- Background Services
Recommended Libraries
| Library | Purpose | |---------|---------| | Microsoft.AspNetCore.SignalR | Real-time push (built-in) | | MediatR | Domain event → notification dispatch | | Hangfire / Quartz.NET | Scheduled notification delivery |
Procedure
- Set up SignalR hub — see SignalR patterns
- Review notification hub sample
- Define notification types in Core layer
- Register hub endpoint in
Program.cs - Configure CORS for SignalR WebSocket/SSE
- Implement
INotificationServicefor sending from any service - Add user/group targeting for scoped notifications
- Persist notifications for offline users (optional)
- Add structured logging for all notification dispatches
- Test with integration tests using
HubConnectionclient
Architecture
Domain Event → INotificationService → SignalR Hub → Connected Clients
↘ Repository (persist for offline)
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