Hi Ervin:

On Fri, Dec 23, 2011 at 01:33:33AM -0800, Ervin Yan wrote:
> Since our customers may only need 4 of the packages for basic
> functions, and need not download the whole image from our production
> server,  and to provide consistent customer experiences with other
> platforms,  we decided to use separate p5p file for different
> packages, like rpm file on Linux, and bff file on AIX.


Bart and Shawn already covered a number of these points, but if you'd
prefer to avoid having your customers download the entire image just to
install a subset, an external respository is the way to go.  This has
the added benefit that on upgrade operations your customers will only
have to download the content that changed between releases.  Depending
upon how this is managed, you can speed up upgrades a lot, since you
typicially don't need to replace every installed component.

It's also possible for the HTTP repositories to interoperate with CDNs
and web caches, which allows your content to potentially get closer to
users, which also decreases their download times.

-j
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