Envoy# 见我的另一本开源书:《Istio & Envoy 内幕》 Network Filter# Taming a Network Filter Lifecycle of a Network Filter Practical Applications Gatekeeping Collecting Protocol-specific Stats Feeding Protocol-specific Metadata Reshaping Traffic Protocol-specific Routing and Load Balancing Native Envoy extensions (C++) vs WebAssembly Conclusion TCP Proxy# TCP Proxy TCP Proxy Configuration Dynamic cluster selection Routing to a subset of hosts Statistics TCP Proxy(proto) Envoy Socket backlog