On Mon, Dec 21, 2009 at 09:23:36PM -0700, Leif Hedstrom wrote: > > I believe this is being worked on right now, not sure quite what the > status is. Dima Ruban, want to comment on this (since you "own" this > part)? It is supposed to work, but I think those "connection_collapsing" > configs are either not functioning properly, or not at all ;). There is > a feature called "read-while-write" (rww) which should work, and I > believe Dima is working on cleaning up this mess a bit.
Read-while-write feature (proxy.config.cache.enable_read_while_writer) should work w/ builtin cache. Keep in mind that this feature is nearly identical to what other products/projects call a forward connection collapsing. The way it works is - as soon as writer starts writing object into a cache, all the subsequent requests to that object will be able to serve it out from cache even before writer completes writing the entire object. Writer starts writing into cache once it receives headers from the origin server, so if second request came before first request received headers, read while write isn't gonna come into play. Current code tries to deal w/ it with 'connection_collapsing' options but as far as I know it doesn't work properly. It's gonna be addressed in the newer version of read-while-write that I'm working on right now. Cheers! > > Cheers! > > -- leif > > --dima
