/azure-signalr-service

name: azure-signalr-service
description: Expert knowledge for Azure SignalR Service development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when configuring SignalR modes, auth/network setup, scaling multi-region hubs, Event Grid/API Mgmt integration, or live tracing, and other Azure SignalR Service related development tasks. Not for Azure Web PubSub (use azure-web-pubsub), Azure Service Bus (use azure-service-bus), Azure Event Hubs (use azure-event-hubs), Azure Relay (use azure-relay).
compatibility: Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation.
metadata:
  generated_at: "2026-11-08"
  generator: "docs2skills/1.0.0"

Azure SignalR Service Skill

This skill provides expert guidance for Azure SignalR Service. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file

> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)

This skill requires **network access** to fetch documentation content:

• **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
• **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.

Category Index

| Category | Lines | Description | |----------|-------|-------------| | Troubleshooting | L37-L45 | Diagnosing and fixing SignalR issues using Azure Monitor logs and live trace, including connectivity, message delivery, and common Azure SignalR Service errors. | | Best Practices | L46-L51 | Guidance on safely shutting down SignalR app servers and managing client lifecycle events, including detecting, handling, and recovering from client disconnects and reconnects. | | Decision Making | L52-L56 | Guidance on choosing the right SignalR Service mode (Default/Serverless/Classic) and configuring availability zones/zone redundancy for high availability and resilience. | | Architecture & Design Patterns | L57-L63 | Patterns for scaling and sharding SignalR, designing resilient multi-region topologies, and architecting high-availability, high-throughput ASP.NET Core SignalR apps with Azure SignalR. | | Limits & Quotas | L64-L70 | Message/connection billing rules, capacity planning, throughput limits, and how to scale Azure SignalR instances within quota and performance constraints. | | Security | L71-L92 | Securing Azure SignalR: auth (keys, Entra ID, managed identities, custom client auth), RBAC, cross-tenant access, network/private endpoints, NSGs, firewall, key rotation, and Azure Policy compliance. | | Configuration | L93-L104 | Configuring SignalR apps: connection strings, upstream endpoints, custom domains, monitoring/metrics, negotiation endpoints, Functions bindings, and using the local emulator. | | Integrations & Coding Patterns | L105-L120 | Patterns and APIs for integrating SignalR with servers and gateways: SDK usage, client management, REST data-plane versions, and wiring events through Event Grid, API Management, and Application Gateway. | | Deployment | L121-L131 | Deploying and managing Azure SignalR via CLI, ARM/Bicep templates, autoscale setup, regional moves, and end-to-end web app deployment (incl. GitHub auth) |

Troubleshooting

| Topic | URL | |-------|-----| | Use Azure Monitor resource logs to troubleshoot SignalR | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-howto-diagnostic-logs | | Troubleshoot common Azure SignalR Service issues | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-howto-troubleshoot-guide | | Use the Azure SignalR live trace tool for diagnostics | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-howto-troubleshoot-live-trace | | Troubleshoot SignalR connectivity and message delivery | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-howto-troubleshoot-method | | Troubleshoot common Azure SignalR Service issues | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-resource-faq |

Best Practices

| Topic | URL | |-------|-----| | Gracefully shut down Azure SignalR app servers | https://learn.microsoft.com/en-us/azure/azure-signalr/server-graceful-shutdown | | Handle client disconnections and reconnections in Azure SignalR | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-concept-client-disconnections |

Decision Making

| Topic | URL | |-------|-----| | Choose the right Azure SignalR Service mode | https://learn.microsoft.com/en-us/azure/azure-signalr/concept-service-mode |

Architecture & Design Patterns

| Topic | URL | |-------|-----| | Design resilient multi-region Azure SignalR topologies | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-concept-disaster-recovery | | Scale ASP.NET Core SignalR apps using Azure SignalR | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-concept-scale-aspnet-core | | Scale Azure SignalR with multiple instances and sharding | https://learn.microsoft.com/en-us/azure/azure-signalr/signalr-howto-scale-multi-instances |

Limits & Quotas

| Topic | URL | |-------|-----| | Understa