I am new to Istio and need help configuring it to maintain persistent connections for push notifications using Server-Sent Events (SSE) with Spring WebFlux. My goal is to ensure these connections remain reliable and active 24/7(connection should be keep alive)

I have set istio configuration for others microservice it’s working fine but here my connection should be persistence

Where I need to set rules for persistence connections.? (In istio)
Please do reply..

Spring WebFlux Application: Handles SSE for push notifications.
Kubernetes Deployment and Service: Deployed the Spring WebFlux application.
Istio: Installed and configured in the Kubernetes cluster(EKS).
I have enabled Istio sidecar injection.
And Created virtual service and Gateway and DestinationRule

How to configure this using istio..?

Any guidance or examples from similar implementations would be greatly appreciated!