Digg is using redis for such a feature as well. We use it on the MyNews - Top in 24 hours. Since we need timestamp ordering + sorting by how many friends touch a story.
-Chris On Aug 15, 2010, at 7:34 PM, Benjamin Black wrote: > http://code.google.com/p/redis/ > > On Sat, Aug 14, 2010 at 11:51 PM, S Ahmed <sahmed1...@gmail.com> wrote: >> For CF that I need to perform range scans on, I create separate CF that have >> custom ordering. >> Say a CF holds comments on a story (like comments on a reddit or digg story >> post) >> So if I need to order comments by votes, it seems I have to re-index every >> time someone votes on a comment (or batch it every x minutes). >> >> >> Right now I think I have to pull all the comments into memory, then sort by >> votes, then re-write the index. >> Are there any best-practises for this type of index?
