dotnet-realtime-communication

Real-time communication patterns for .NET applications. Compares SignalR (full-duplex over WebSockets with automatic fallback), Server-Sent Events (SSE, built-in to ASP.NET Core in .NET 10), JSON-RPC 2.0 (structured request-response over any transport), and gRPC streaming (high-performance binary streaming). Provides decision guidance for choosing the right protocol based on requirements.

Scope

• SignalR hubs (WebSocket, auto-fallback, scaling)
• Server-Sent Events (SSE, built-in .NET 10)
• JSON-RPC 2.0 over any transport
• gRPC streaming for high-performance binary
• Protocol comparison and decision guidance

Out of scope

• HTTP client factory and resilience pipelines -- see [skill:dotnet-http-client] and [skill:dotnet-resilience]
• Native AOT architecture and trimming -- see [skill:dotnet-native-aot] and [skill:dotnet-trimming]
• Blazor-specific SignalR usage -- see [skill:dotnet-blazor-patterns]

Cross-references: [skill:dotnet-grpc] for gRPC streaming implementation details and all four streaming patterns. See [skill:dotnet-integration-testing] for testing real-time communication endpoints. See [skill:dotnet-blazor-patterns] for Blazor-specific SignalR circuit management and render mode interaction.