Moving from Genie to HTTP (or a linux socket)

I want to have a deamon running on a server and I would like to be able to change some parameters without restarting it.

My guess was that the best way to do that was by using a socket. I played a bit with genie and I ended up with a structure that works. Here’s a toy example:

using Genie, Genie.Router, Genie.Renderer.Json, Genie.Requests
using Dates

settings = Dict("a" => 1, "b" => 2, "c" => 3)

route("/config") do
  settings |> json
route("/config", method = POST) do
  payload = jsonpayload()
  settings["a"] = payload["a"]
  settings["b"] = payload["b"]
  settings["c"] = payload["c"]
  settings |> json


while true
  print("$( $(settings)\n")

I can run this and it prints the dictionary. Then if I run the following

using HTTP

HTTP.request("POST", "http://localhost:8000/config", [("Content-Type", "application/json")], """{"a":0, "b":0,"c":0}""")

The dictionary changes. That’s basically the only thing I need. I don’t need access from outside the same machine.

So far so good, but is Genie an overkill? Should I do this in HTTP? Or maybe by using a linux socket? How easy is to implement this in HTTP or with a socket?