How to Scale WebSocket Connections in Go

Scale WebSocket connections in Go by running multiple server instances behind a load balancer and tuning the GOMAXPROCS and GODEBUG settings for optimal concurrency.

import (
    "net/http"
    "runtime"
)

func main() {
    runtime.GOMAXPROCS(runtime.NumCPU())
    http.ListenAndServe(":8080", nil)
}

Set GODEBUG=http2client=0 if you encounter HTTP/2 compatibility issues with older clients, and ensure your load balancer distributes traffic evenly across instances.

To handle more WebSocket connections, run multiple copies of your Go server and put a traffic manager in front of them to split the load. This is like opening more checkout lanes at a store to serve more customers at once.