Streaming and buffering in SharePoint 2010

The best single link is a fairly new Technet article on caching and performance planning with SharePoint 2010: http://technet.microsoft.com/en-us/library/ee424404(office.14).aspx. Summary: performance can be tuned through disk-based BLOB caching and bit rate throttling

Bitrate throttling configuration walkthrough: http://learn.iis.net/page.aspx/148/bit-rate-throttling-configuration-walkthrough/. Summary: detailed guide from the IIS team

More direction on where we’re going with streaming (the out-of the-box media web part uses buffering, NOT streaming. Streaming is enabled via IIS media services): http://misfitgeek.com/blog/iis-media-services-3-0/. Summary: good overview of IIS Media Services 3.0

And finally, Silverlight 4 capabilities, including multicasting. Currently SL4 is in beta: http://scorbs.com/2009/11/19/pdc-session-silverlight-4-beta-overview/ http://blogs.msdn.com/ncl/archive/2009/11/18/udp-multicast-in-silverlight-4.aspx