Title:

redis: Support zone-aware routing support for Redis Cluster proxy

Description:

Valkey exposes availability_zone in its INFO command response, and Valkey Glide already leverages this for zone-aware read routing.

Since Envoy already supports zone-aware routing for general clusters, it would be great to bring this capability to the Redis Cluster proxy as wellThis would help reduce cross-zone latency and data transfer costs in multi-AZ deployments.

References:

• https://valkey.io/commands/info/
• https://github.com/valkey-io/valkey-glide
• https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/upstream/load_balancing/zone_aware