Re: how does cassandra compare with mongodb?

2010-05-13 Thread philip andrew
MongoDB encourages you to define your schema in your application code by using mapping classes. This logically infers that it makes no sense to define the schema twice, in the database and in your application code. On Fri, May 14, 2010 at 3:48 AM, Steve Lihn wrote: > What is changing? A more fle

Re: how does cassandra compare with mongodb?

2010-05-12 Thread philip andrew
Hi, >From my understanding, Cassandra entities are indexed on only one key, so this can be a problem if you are searching for example by two values such as if you are storing an entity with a x,y then wish to search for entities in a box ie x>5 and x<10 and y>5 and y<10. MongoDB can do this, Cassa

Re: Is SuperColumn necessary?

2010-05-06 Thread philip andrew
Please create a new term word if the existing terms are misleading, if its not a file system then its not good to call it a file system. On Thu, May 6, 2010 at 3:50 PM, Torsten Curdt wrote: > +1 on all of that > > On Thu, May 6, 2010 at 09:04, David Boxenhorn wrote: > > That would be a good tim

Re: Appropriate use for Cassandra?

2010-05-05 Thread philip andrew
http://www.youtube.com/watch?v=eaCCkfjPm0o 3.30 song begins 4.00 starfish loves you and Cassandra loves you! On Thu, May 6, 2010 at 11:03 AM, Denis Haskin wrote: > i can haz hints pleez? > > On Wed, May 5, 2010 at 9:28 PM, philip andrew > wrote: > > Starfish loves you. >

Re: Appropriate use for Cassandra?

2010-05-05 Thread philip andrew
Starfish loves you. On Wed, May 5, 2010 at 1:16 PM, David Strauss wrote: > On 2010-05-05 04:50, Denis Haskin wrote: > > I've been reading everything I can get my hands on about Cassandra and > > it sounds like a possibly very good framework for our data needs; I'm > > about to take the plunge and

How to model 2D data in Cassandra?

2010-04-17 Thread philip andrew
Hi, Lets say I wanted to store 2 dimensional data in the database, each object has a X and Y location in a very large space. I want to query Cassandra for all objects within a rectangle. My understanding is that my objects can only be indexed by one key, one key for each single object in my tabl