Sidecar Mode - Downstream / Upstream of an Outbound Request

Sidecar Mode - Downstream / Upstream of an Outbound Request An architecture diagram generated by Archify. Application · sends the request · Application Pod (Sidecar Mode) · Downstream Application sends the request Downstream Envoy Sidecar · istio-proxy · Application Pod (Sidecar Mode) · Proxy Envoy Sidecar istio-proxy Proxy Backend Service · receives the request · Architecture component · Upstream Backend Service receives the request Upstream Send request (Downstream → Envoy) Forward request (Envoy → Upstream) Application Pod (Sidecar Mode) Legend Frontend Backend Security

From Envoy's perspective

  • • The application is Downstream (sends requests)
  • • The backend service is Upstream (receives requests)