On Thu, Jan 15, 2015 at 2:30 PM, Gilles Dubuc <[email protected]> wrote:
> Erik came up with the following suggestion on the whole > thumbnails-stored-in-swift issue: would it be possible to store thumbnails > in a separate Swift cluster than originals, and have the replica count > setting for the thumbnail swift cluster set to 1? > > The rationale being that this would solve the main issue of storage space > waste without having to learn/test/deploy a new tool. > it is possible to have a separate swift cluster but I'm not sure it'd yield many benefits because e.g. each swift machine would become a "SPOF" in the sense if it is down imagescalers would have to take all hits for all thumbs stored on that machine. To give some numbers, originals take up ~58T and thumbs ~32T while there are ~27M originals vs ~428M thumbs and from swift thumbs are requested ~6.5x more than originals. There's more proposals here too: https://www.mediawiki.org/wiki/Talk:Requests_for_comment/Simplify_thumbnail_cache HTH, filippo
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