On Thursday, February 28, 2013 at 5:29 AM, M.-A. Lemburg wrote: > On 27.02.2013 19:21, Donald Stufft wrote: > > On Wednesday, February 27, 2013 at 1:11 PM, M.-A. Lemburg wrote: > > > On 27.02.2013 18:37, Donald Stufft wrote: > > > > On Wednesday, February 27, 2013 at 12:10 PM, M.-A. Lemburg wrote: > > > > > Package installers only need access to the static files in > > > > > the /simple/ index. Those can be put behind a CDN to increase > > > > > uptime. > > > > > > > > > > PyPI itself doesn't have to be up and running if you just want > > > > > to download the files (unfortunately, that's not true at the > > > > > moment, because the /simple/ index is dynamically generated, > > > > > but that can be changed). > > > > > > > > > > See http://wiki.python.org/moin/CloudPyPI for details. > > > > > > > > I'm aware of that, but that doesn't change the statement. If /simple/ > > > > is down you cannot determine the external urls. There is no way > > > > to increase uptime by adding more points of failure. > > > > > > > > > > > > > > > > Please reread the proposal. The /simple/ index would > > > get hosted on a separate domain which then points to the CDN. > > > > > > > > > It. Does. Not. Matter. You are simply moving the SPOF which is > > /simple/, if /simple/ is how you discover the CDN and/or external > > urls then the things it points too can have 100% uptime and if > > /simple/ is down the entire system is down. > > > > > We appear to be talking about different things :-) > > The proposal suggests to put the /simple/ index itself > on Amazon S3 and then have CloudFront distribute the files > to the end users. > > The PyPI server would only manage pushing the file > to the S3 buckets. PyPI could go down and Amazon would still > be serving the files. > > See the "Moving static data to a CDN" of > http://wiki.python.org/moin/CloudPyPI/Proposal > I'm aware of what you're talking about, Amazon doesn't have 100% uptime. Moving that there is good for other reasons but it doesn't magically make adding multiple single points of failures defy the laws of nature.
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