Now in Public Preview: System events for data-plane in API Management gateway

We’re excited to announce the public preview of new data-plane system events in Azure Event Grid for the Azure API Management managed gateway (starting with classic tiers). This new capability provides near-real-time visibility into critical operations within your data-plane, helping you extend your API traffic with monitoring, automate responses, and prevent disruptions. These data-plane events complement the existing control-plane events available in Azure Event Grid system topics, marking the beginning of expanded event-driven capabilities in Azure API Management. 

What’s New? 

1. Circuit Breaker Events: Our managed gateway now publishes circuit breaker status changes to Event Grid, so you can act before issues escalate. 

• Microsoft.ApiManagement.Gateway.CircuitBreakerOpened 
  Triggered when the failure threshold is reached, and traffic to a backend is temporarily blocked. 

• Microsoft.ApiManagement.Gateway.CircuitBreakerClosed 
  Indicates recovery and that traffic has resumed to the previously blocked backend. 

2. Self-Hosted Gateway Token Events: Stay informed about authentication token status to ensure deployed gateways do not become disconnected. 

• Microsoft.ApiManagement.Gateway.TokenNearExpiry 
  Published 7 days before a token’s expiration to prompt proactive key rotation. 

• Microsoft.ApiManagement.Gateway.TokenExpired 
  Indicates a failed authentication attempt due to an expired token—preventing synchronization with the cloud instance. (note: API traffic is not disrupted). 

And this is just the beginning! We're continuously expanding event-driven capabilities in Azure API Management. Stay tuned for more system events coming soon! 

Why This Matters? 

With system events for data-plane, managed gateway now offer near-real-time extensibility via Event Grid. This allows customers to: 

• Detect and respond to failures instantly. 
• Automate alerts and workflows for proactive issue resolution. 
• Ensure smooth operations with timely token management. 

Public Preview Limitations 

• Single-Instance Scope: Events are scoped to the individual gateway instance where they occur. No cross-instance aggregation yet. 
• Available in classic tiers only: This feature is currently supported only on the classic Developer, Basic, Standard, and Premium tiers of API Management. 

Get Started Today 

Start monitoring your APIs in real-time with event-driven architecture today. 

• Follow the event schema and samples to build subscribers and handlers. 

• Review integration guidance with Event Grid to wire up your automation pipelines. 

For a full list of supported Azure API Management system events and integration guidance, visit the Azure Event Grid integration docs.