gistfile1.txt

// this needs to be read from the DB on startup
var userId = 1;

function putUser(user, cb) {
    // am making this up for the purposes of demonstration - don't know what your use-case is
    userId++;
    user.id = userId;

    var ops = [
        { type: 'put', key: 'sequence:userId', value : userId },
        { type: 'put', key: user.nick, value: user }
    ];

    db.batch(ops, function (err) {
        if (err) return console.log('Ooops!', err)
        console.log('Great success dear leader!')
    });
}