Twitter doesn't currently have the stack to scale realtime reverse chron search... there was a spec doc years ago where each timeline would just be a search que

Twitter doesn't currently have the stack to scale realtime reverse chron search... there was a spec doc years ago where each timeline would just be a search query on a pool of tweets but that architecture never got built. I'm sure if Twitter was a product which came out of Google's culture, it would've worked that way.