Thanks. We try! Package deltas (assuming you mean those rather than index deltas, pdiffs or whatever) haven't been as much of a pressing issue, so there's nothing currently in progress on those. But now that we have much more scalable librarian space thanks to Swift, there are useful things we could do that look more like a modern service: prepare deltas in the database/librarian, expire them some threshold after the packages they're based on are superseded, and have a service in prodstack that proxies the paths that debdelta would want to fetch to the appropriate librarian paths. We'd then be able to scale much more sensibly than previous attempts to prototype this.
Would you like us to put this or something like it on the OLS feature backlog? I do think that we ought to do diskless PPAs first to relieve ourselves of ppa.launchpad.net being a single big un-horizontally-scalable host attached to the SAN. That project would involve building a good chunk of the same technology, we can do it without needing to coordinate with any client-side work, and we intentionally implemented by-hash in such a way that it would help with the first stages of diskless archives. Our best guess on performance is that we'll need PS5 Swift to be in place for the librarian before we can deploy either of these, so there's a certain lead time involved anyway. -- https://code.launchpad.net/~cjwatson/launchpad/fewer-by-hash-algorithms/+merge/291871 Your team Launchpad code reviewers is requested to review the proposed merge of lp:~cjwatson/launchpad/fewer-by-hash-algorithms into lp:launchpad. _______________________________________________ Mailing list: https://launchpad.net/~launchpad-reviewers Post to : [email protected] Unsubscribe : https://launchpad.net/~launchpad-reviewers More help : https://help.launchpad.net/ListHelp
