On Wed, Jun 21, 2017 at 12:44 PM, Jeff King <[email protected]> wrote: > > Yeah. The naive way to implement this would be to have the client > connect and receive the ref advertisement. And then when it's a noop > (nothing to fetch), instead of saying "I want these objects", say > "Please pause until one or more refs change". But I don't think we'd > want to leave actual upload-pack processes sitting paused on the server. > Their memory usage is too high.
https://git.eclipse.org/r/#/c/6587/ JGit has had its experiments with some standing connection and then having some sort of Pub/Sub system. AFAICT it did not go anywhere because of the number of connections (even if you optimize for the serverside, such that each connection is just the cost of a java thread and a file descriptor). > > The sticking point on both is that the client needs to speak before the > ref advertisement begins, which is why we have to deal with the protocol > v2 headache. I would not call it headache, but large project that is not to be tackled by one person alone. ;)
