*ruby*.txt

"oldbackends": [
    {
        "hostname": "serverurl",
        "port": 123,
        "weight": 123,
        "backup": false
    },
    {
        "hostname": "anotherurl",
        "port": 123,
        "weight": 321,
        "backup": true
    }
]

"newbackends": {
    "anotherurl": {
        "backup": true,
        "port": 123,
        "weight": 321
    },
    "serverurl": {
        "backup": false,
        "port": 123,
        "weight": 123
    }
}