On Mar 11, 2012, at 12:16 AM, Dmitry Ukov wrote: > Hi all, > I want to introduce some ideas about Swift. > > Let’s assume we have huge amount of data stored in Swift (e.g. 10Pb). This > data are dynamically changed by users. So we need to reduce network load > caused by replication and intensive data uploading/downloading. > My proposal is to create so called “Ring of rings”. For example we have 2 > data centers with deployed Swift. We can distinguish some nodes for serving > “Ring of rings” (actually we need only Proxy Servers).
<snip> > So we can use Ring to determine data center to send http request to. > > What do you think about this scheme? > Feedback from the OpenStack/Swift community would be very appreciated. I think these are great ideas to explore. Solving a multi-DC deployment is a goal we have talked about for a long time. There is another thread on this mailing list from John Leach that is talking about solving this same problem, but it uses tiered zones in a single ring instead of a "ring of rings". While conceptually similar (indeed it may just be semantic differences), I think the tiered zones approach is a better path to explore, and I'd love to hear your thoughts on that thread. --John
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