hi Claudio, thanks for the hint the point is, that we need a fast request to the user data, that is why we need the row key to be the user_id
----- Original Message ----- From: Claudio Martella <claudio.marte...@tis.bz.it> Sent: Fri Jul 15 2011 14:40:38 GMT+0200 (CET) To: CC: Subject: Re: data structure
supposed you want a per-hour granularity, you could have a key like this <userID>_<YYMMDDHH> where HH: hour of the day (0-23) DD: day of the month MM: month of the year YY: year this could be one way.