anchor.diff:                 <<"databases">> => []},
         ok = persist_config(Conf),
         {ok, Conf}
  -  end.+  end.
  
positive.code:   Path = filename:join(data_dir(), "barrel_config"),
    ok = filelib:ensure_dir(Path),
    Path.
    
  persist_config(Conf) ->
    file:write_file(conf_path(), jsx:encode(Conf)).
  
  
negative.code: handle_info({'EXIT', DbPid, _Reason}, State) ->
    NState = db_is_down(DbPid, State),
    {noreply, NState};
  
  handle_info(init_dbs, State) ->
    %% load databases from config
    {Loaded, State2} = load_dbs(State),
  