On Wednesday, April 06, 2011 02:33:24 PM John R Pierce wrote:
On 04/06/11 7:56 AM, Lamar Owen wrote:
I really really wish repositories would be ACID compliant.
I concur, but I'm not sure how you'd do this, since some users will be in process with an update under 1 state while the repo switches to the new state, even if that state switch is instantaneous.
Pipe dream: MultiVersion Concurrency Control, like PostgreSQL implements it, but for packages instead of regular tuples. Hrmph, PostgreSQL BLOB/bytea support is good enough to serve packages out of, now..... A reader will always get consistent data in an MVCC scheme.
Yeah, I know, I should know better. But I was told that same thing years ago when I first started advocating delta rpms. Now we (well, not CentOS, but upstream Fedora at least) have presto, and, yeah, it works great.