First is better choice, each filed can be updated separately(write only).
Second you have to take care json yourself (read first-modify-then write).
On Fri, Aug 24, 2012 at 5:45 PM, Roshni Rajagopal <
roshni.rajago...@wal-mart.com> wrote:
> Hi,
>
> Suppose I have a column family to associate a user to a dynamic list of
> items. I want to store 5-10 key information about the item, & no specific
> sorting requirements are there.
> I have two options
>
> A) use composite columns
> UserId1 : {
> <itemid1>:<Name> = Betty Crocker,
> <itemid1>:<Descr> = Cake
> <itemid1>:<Qty> = 5
> <itemid2>:<Name> = Nutella,
> <itemid2>:<Descr> = Choc spread
> <itemid2>:<Qty> = 15
> }
>
> B) use a json with the data
> UserId1 : {
> <itemid1> = {name: Betty Crocker,descr: Cake, Qty: 5},
> <itemid2> ={name: Nutella,descr: Choc spread, Qty: 15}
> }
>
> Which do you suggest would be better?
>
>
> Regards,
> Roshni
>
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