Thought as much, but wanted someone to give me a convincing reply so that we can make a better decision.
Thanks for the quick reply! On Tue, Dec 9, 2008 at 4:16 PM, Simon Hobson <[EMAIL PROTECTED]> wrote: > Gautham Pai wrote: > > >We are trying to see if RRDTool is a good fit to build a popularity > >service for a social network. > > No, I don't think it will help you much, if at all. > > >The requirements are: > >A unique score is given to every user based on various factors. The > >number of such users could run into millions. We then feed this > >score along with the userids to a datastore. We should then be able > >to query the store for answers to questions like: > >* Who are the top 5 active users in the network? > > RRD won't tell you that, you'd have to write a script to extract the > data and sort it. > > >* Who are the top 5 active users in the last one month and how has > >their activity changed in the last week? > > Ditto, RRD won't find the top users for you, but once you've found > them then it could tell your what their activity has been. > > >I read that RRDTool allows only numeric data to be captured. But we > >need some book-keeping data too that needs to be stored and > >retrieved later. > > Correct, only numeric data is held, and the data elements are static > - eg you cannot store (user, date/time, activity) tuples. You would > have to either store a separate database for each user (that's a LOT > of files), or stuff LOTS of users into one file (really hard to > manage), or keep a number of files each of which stores data for a > number of users (also very hard to manage). > > >Is it possible to build such a service using RRDTool? > > To be honest, I think the work involved in making it fit your needs > would be more than using a common relational database which would > probably be able to return most of the information you want using > it's standard query facilities. > > -- > Simon Hobson > > Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed > author Gladys Hobson. Novels - poetry - short stories - ideal as > Christmas stocking fillers. Some available as e-books. > > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > -- Gautham Pai, Software Engineer, weRead Website: http://buzypi.in/ Blog: http://blog.buzypi.in/ weRead: http://weread.com/ "What's life without an impossible dream"
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