[WIP][DO NOT MERGE] Proposal: Auto-scaling

Auto-scaling is a feature that allows users to increase capacity as needed by controlling the number of replicas deployed within the system based on request statistics. Auto-scaling is bidirectional, it will scale up to a specified limit as requests increase and scale down to minimal capacity as the requests decrease.

https://github.com/pweil-/origin/blob/035e0351a838a6ec6dcd65cc1977c85fca98ae5f/docs/autoscaling.md



No one knows what "routing layers" are, or endpoints.  I don't think that's a good example here.  Rephrase - "Most applications will expose one or more network endpoints for clients to connect to.  Many of those endpoints will be load balanced or situated behind a proxy - the data from those proxies and load balancers can be used to estimate client to server traffic for applications.  This is the primary, but not sole, source of data for making decisions."