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From "Paul Davis" <>
Subject Re: Couch performance
Date Fri, 30 May 2008 14:06:15 GMT

I haven't seen any numbers on attachments yet, but one thing you may
run up against is that attachments currently have to be Base64
encoded. Upgrading the attachment API to handle raw data is in the
works, but I haven't the slightest when it'll land.

Paul Davis

On 5/30/08, Simon Kapeniak <> wrote:
> Hello,
> I'd like to ask what is expected performance of CouchDB in case of heavy
> binary data attachments. Scenario I'd like to evaluate CouchDB for, implies
> little different usage then web based application or such, which as I
> understand involves dozens of small chunkcs requests rather then constant
> access to big files.
> I wonder what are possible issues with that: I want to save, lets say, a
> 1000 of binary files with about 1-20MB each. Many of them will have a number
> of versions (ten). There won't be too many simultaneous requests, but rather
> constant access of 1 to 20 clients per minute asking about single file, or
> some of them (less) also sequence of attachments.
> In general, under one project, my database should handle a few TB of data
> generated during a period of ~60 days, allowing access to that data (with a
> rate of ~500MB per minut) for something like 10-20 people in total?
> Are there any issues I don't see now? What are possible problems introduced
> by such application? Thanks for any comments!
> Cheers,
> Simon.

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