Distributed Services with Go

Multiplex to Run Multiple Services on One Port

Multiplexing allows you to serve different services on the same port. This makes your service easier to use: there’s less documentation, less configuration, and fewer connections to manage. And you can serve multiple services even when a firewall constrains you to one port. There’s a slight perf hit on each new connection because the multiplexer reads the first bytes to identify the connection, but for long-lived connections that performance hit is negligible. And you must be careful you don’t accidentally expose a service.

Many distributed services that use Raft multiplex Raft with other services, like an RPC service. Running gRPC with mutual TLS makes multiplexing tricky because we want to multiplex ...