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From Liam Staskawicz <>
Subject Re: partial/diff updates?
Date Wed, 26 Nov 2008 20:25:45 GMT

On Nov 26, 2008, at 12:20 PM, Noah Slater wrote:

> On Wed, Nov 26, 2008 at 09:57:24AM -0800, Liam Staskawicz wrote:
>> When updating a document, is there any notion of submitting a  
>> partial update?
>> It seems like being able to specify that only some subset of the  
>> fields in a
>> document should be updated would offer some efficiency benefits.  I  
>> guess I
>> had in mind some scenario where CouchDB would create the updated  
>> record by
>> merging the existing revision with the new info and saving the  
>> updated
>> revision, but I'm still new to CouchDB so I don't have a good sense  
>> of whether
>> this tramples on any important concepts.
> Nope, CouchDB does not support this at the moment. If you want to  
> make an update
> you have to send the entire document each time.
> There is some discussion among CouchDB users and developers about  
> the benefits
> of partial updates but it seems the real sticking point so far is  
> deciding on
> the mechanism for enabling this. It seems the rough consensus at  
> this point is
> that whatever method we use be something that is standardised,  
> either through a
> standards body or de facto within the larger JSON community.

Thanks for the response - and yeah, this is not a sticking point at  
the moment but as systems start to ramp up this seems like a pretty  
good way to make the back and forths much more efficient.   Will be  
looking forward to this being introduced at some point.


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