Envoy Proxy Has a Free API — The L7 Proxy Behind Istio, AWS, and Cloudflare

Envoy is the high-performance L7 proxy that powers Istio, AWS App Mesh, Cloudflare, and Lyft. It provides advanced load balancing, observability, and traffic management through a powerful admin API. Free, open source, CNCF graduated. The backbone of modern service meshes. Why Use Envoy? L7 protocol support — HTTP/2, gRPC, WebSocket, MongoDB, Redis, Kafka Advanced load balancing — least request, ring hash, random, zone-aware Dynamic configuration — update routing without restarts via xDS API Built-in observability — distributed tracing, detailed metrics, access logging Hot restart — zero-downtime config updates Quick Setup 1. Run Envoy # Docker docker run -d -p 10000:10000 -p 9901:9901 envoyproxy/envoy:v1.30-latest # The admin interface runs on port 9901 2. Admin API ENVOY = "http://localhost:9901" # Server info curl -s " $ENVOY /server_info" | jq '{version: .version, uptime: .uptime_current_epoch, state: .state}' # All stats curl -s " $ENVOY /stats?format=json" | jq '.stats[] | select(