Save time on downloads with delta RPMs in Fedora 11

[Andrew Jamison]

OpenSUSE created the deltarpm? I did not know that! Thanks for that small 
but very important tidbit of information Paul!


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From: "Paul W. Frields" <stickster at gmail.com>
Sent: Friday, September 04, 2009 7:18 PM
To: <fedora-marketing-list at redhat.com>
Subject: Re: Save time on downloads with delta RPMs in Fedora 11

> On Fri, Sep 04, 2009 at 08:56:35PM +0530, Rahul Sundaram wrote:
>> Hi
>>
>> http://blogs.techrepublic.com.com/opensource/?p=904
>>
>> "Fedora 11 introduced a great new feature: delta RPM updates. This
>> feature creates delta RPM packages (.drpm) that are binary “patches” to
>> the existing RPM packages. Instead of downloading all files, regardless
>> of whether they have changed or not, a delta RPM will only download the
>> files that have changed compared to the previous RPM package.
>>
>> Once the delta RPM is downloaded by the Presto plugin for yum, it will
>> try to reconstruct a full RPM based on the contents of the previous RPM,
>> plus the newly changed files from the delta RPM. The newly-created RPM
>> will then be installed by yum."
>
> I think it would be fair and right for us to note in interviews or
> followup that the deltaRPM code comes from our friends in the openSUSE
> community.  Credit where credit is definitely due!
>
> -- 
> Paul W. Frields                                http://paul.frields.org/
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