openfeign依据consul中的服务找到对应的pod的ip：port。蓝绿怎么做？

```mermaid
flowchart TD
    subgraph Client Side
        A[Spring Boot App with OpenFeign] -->|Call my-service| B[Spring Cloud LoadBalancer]
    end

    subgraph Consul
        B -->|Query my-service instances| C[Consul Service Discovery]
        C -->|Return instances with tags/meta| D[Instance List with version info]
    end

    subgraph K8s Cluster
        D -->|Filter version=blue/green| E[Service Selector / LoadBalancer]
        
        subgraph Blue Deployment
            E --> F[Pod Blue 1]
            E --> G[Pod Blue 2]
        end

        subgraph Green Deployment
            E --> H[Pod Green 1]
            E --> I[Pod Green 2]
        end
    end

    %% Optional: Gateway / Ingress for traffic control
    subgraph Gateway/Ingress Layer
        J[Ingress / Service Mesh] -.-> E
        J -->|Route 90% blue, 10% green| F
        J -->|Route 90% blue, 10% green| H
    end
```