SteelHeadā„¢ Deployment Guide - Protocols : Video Optimization : Video On-Demand with HTTP Prepopulation
  
Video On-Demand with HTTP Prepopulation
Company updates and new internal training videos are examples of video content that can cause bursts of traffic when they are first made available. Video content is generally accessible only from Web servers and can only be accessed using HTTP. Prewarming RiOS data store during off hours helps to reduce WAN bandwidth consumption during peak hours. While HTTP prepopulation enables you to prepopulate any information over HTTP, this feature is geared toward video optimization.
For more information about HTTP prepopulation, see HTTP Prepopulation.