[Rd] contrib.url in non-interactive mode

[Hadley Wickham]

>> It is up to you to set a default mirror: we have little idea where you
>> live (and it may not be where your email address suggests).  Geolocation
>> of mirrors had been mooted but not implemented (and in a corporate
>> setting is not 100% reliable).  The whole point of mirrors is to spread
>> the load: without them there would be no CRAN as the main host would not
>> allow the traffic.
>>
>>
> The RStudio CRAN mirror uses Amazon's CDN to achieve a degree of geographic
> convenience:
>
> http://blog.rstudio.org/2013/06/10/rstudio-cran-mirror/

Cloudfront, the service we use, currently has 36 locations around the
world: http://aws.amazon.com/cloudfront/details/.

Hadley

-- 
http://had.co.nz/