def METHOD_NAME():
    conf = {
        'title': "Redis DB size",
        'fields': (
            ('size', dict(
                label="redis_size",
                type="gauge",
            )),
        )
    }
    redis_metric = RedisMetric(**conf)
    context = redis_metric.get_context()
    html_body = render_template('prometheus_data.html', **context)
    return Response(html_body, content_type="text/plain")