Update signalr-howto-reverse-proxy-overview.md

Author: vicancy

articles/azure-signalr/signalr-howto-reverse-proxy-overview.md

@@ -51,7 +51,7 @@ There are several general practices to follow when using a reverse proxy in fron
   Make sure that your reverse proxy supports both transport types for `/client/` subpath. For example, when your transport type is WebSocket, make sure your reverse proxy supports both HTTP and WebSocket for `/client/` subpath.
 
   If you have configured multiple SignalR services behind your reverse proxy, make sure `negotiate` request and `connect` request with the same `asrs_request_id` query parameter(meaning they are for the same connection) are routed to the same SignalR service instance.
-  
+* For `ServerSentEvent`(SSE), make sure your reverse proxy doesn't buffer or cache response. For example, API Management has a [detailed documentation](/azure/api-management/how-to-server-sent-events.md) on how to configure API for server-sent events.
 * When reverse proxy is used, you can further secure your SignalR service by [disabling public network access](./howto-network-access-control.md) and using [private endpoints](howto-private-endpoints.md) to allow only private access from your reverse proxy to your SignalR service through VNet.
 
 ## Next steps
@@ -60,4 +60,4 @@ There are several general practices to follow when using a reverse proxy in fron
 
 - Learn [how to work with API Management](./signalr-howto-work-with-apim.md).
 
-- Learn more about [the internals of Azure SignalR](./signalr-concept-internals.md).
+- Learn more about [the internals of Azure SignalR](./signalr-concept-internals.md).