dvfs api and toolkits

[Nate Nielsen]

Sean Middleditch wrote:
> For file systems like HTTP, we can't actually seek in a file.  We have
> to reopen the file at a new location.  

Which is a relatively quick and painless operation.

> Would there be a problem with the
> file possibly changing under us?  Could we potentially detect that?

Yes, in HTTP you use ETag, Modified-Date and perhaps other lesser known
methods.

Cheers,
Nate