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From Javier Canillas <javier.canil...@gmail.com>
Subject Re: Understanding Indexes
Date Thu, 24 Feb 2011 19:33:15 GMT
I don't say you shouldn't. In case you feel like there is a problem, you may
think of splitting column families into N. But I think you won't get that
problem. You can read about RowCacheSize and KeyCache support on 0.7.X of
Cassandra, if you rows are small, you may cache a lot of them and avoid a
lot of latency issues when reading writing.

On Thu, Feb 24, 2011 at 4:18 PM, mcasandra <mohitanchlia@gmail.com> wrote:

>
> Thanks! I am thinking more in terms where you have millions of keys (rows).
> For eg: UUID as a row key. or there could millions of users.
>
> So are we saying that we should NOT create column families with these many
> keys? What are the other options in such cases?
>
> UserProfile = { // this is a ColumnFamily
> >    1 {   // this is the key to this Row inside the CF
> >        // now we have an infinite # of columns in this row
> >        username: "phatduckk",
> >        email: "[hidden email]",
> >        phone: "(900) 976-6666"
> >    }, // end row
> >    2 {   // this is the key to another row in the CF
> >        // now we have another infinite # of columns in this row
> >        username: "ieure",
> >        email: "[hidden email]",
> >        phone: "(888) 555-1212"
> >        age: "66",
> >        gender: "undecided"
> >    },
> > }
>
> --
> View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Understanding-Indexes-tp6058238p6061574.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at
> Nabble.com.
>

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