/solutions/Recent content in Solutions on ngineHugoen-us/solutions/autoscaling/Mon, 01 Jan 0001 00:00:00 +0000/solutions/autoscaling/How it works scalr watches the metrics you already collect — requests per second, queue depth, CPU saturation, anything you can express as a number — and adjusts the size of your instance pool to match. When demand rises it provisions from your prefered cloud provider’s API. When demand falls it drains and removes the surplus. What you need A cloud account we support, a metric source, and a machine image that boots into your application.