Any comments/view points on this?
------On Sat, Feb 12, 2011 at 5:05 PM, Aditya Narayan <ady...@gmail.com>wrote: What if the caching requirements, sorting needs of two kind of data are very much similar, is it preferable to go with a single CF in those cases ? Regards Aditya > > >>> On Sat, Feb 5, 2011 at 10:43 AM, Tyler Hobbs<ty...@datastax.com> > wrote: > >>>>>> > >>>>>> I read somewhere that more no of column families is not a good idea > as > >>>>>> it consumes more memory and more compactions to occur > >>>>> > >>>>> This is primarily true, but not in every case. > >>>>> > >>>>>> But the caching requirements may be different as they cater to two > >>>>>> different features. > >>>>> > >>>>> This is a great reason to *not* merge them. Besides the key and row > >>>>> caches, > >>>>> don't forget about the OS buffer cache. > >>>>> > >>>>>> Is it recommended to merge these two column families into one ?? > >>>>>> Thoughts > >>>>>> ? > >>>>> > >>>>> No, this sounds like an anti-pattern to me. The overhead from having > >>>>> two > >>>>> separate CFs is not that high. > >>>>> > >>>>> -- > >>>>> Tyler Hobbs > >>>>> Software Engineer, DataStax > >>>>> Maintainer of the pycassa Cassandra Python client library >
