Envoy

A high-performance C++ proxy built for cloud-native microservice deployments.

Envoy acts as a universal data plane for service mesh architectures, providing advanced routing, load balancing, and observability features. Created at Lyft and now a CNCF graduated project used by companies like Airbnb, Netflix, and Uber.

Key Capabilities

• ⚡ High Performance: C++ implementation with minimal memory footprint
• 🔀 Protocol Agnostic: Native HTTP/1.1, HTTP/2, HTTP/3, gRPC, and TCP support
• 🎯 Intelligent Routing: Path-based routing, traffic splitting, and header manipulation
• 🔄 Resilience Patterns: Automatic retries, circuit breakers, and timeout management
• 📊 Rich Metrics: Built-in stats, distributed tracing, and access logging
• 🔌 Dynamic Configuration: xDS APIs for runtime updates without restarts
• 🛡️ Security First: TLS termination, mutual TLS, rate limiting, and authentication
• 🌍 Multi-Protocol: WebSocket, MongoDB, Redis, Postgres wire protocols

Configuration Overview

This stack includes a basic static configuration. For your use case, you should:

• Edit envoy.yaml to define your routing rules
• Configure upstream clusters for your backend services
• Set up listeners for your specific ports and protocols
• Add filters for authentication, rate limiting, or other features

The default setup provides:

• Admin dashboard at port 9901 for monitoring and debugging
• Example HTTP listener at port 10000
• Sample upstream service definition

Access Points

• Admin Console: http://envoy.stack.localhost:9901 - View config, stats, and health
• Proxy Endpoint: http://envoy.stack.localhost:10000 - Main traffic entry point

Resources

• Official Documentation
• Configuration Reference
• Example Deployments
• Slack Community