Thanks, Leif. What I'm looking for is a feature to make wait some time cache requests for some object if this object has been requested and transferring from the origin at this moment. In my current configuration I can see situations when I have couple of requests to the same object at the same time, and all these requests directs to origin, as requested object is not in cache yet.
On 15.04.2013 17:50, Leif Hedstrom wrote: > On 4/15/13 7:58 AM, Vladyslav Bachynskyi wrote: >> Hi All, >> >> I want to use connection collapsing in my current configuration, but >> I'm not sure, is it stable at the moment? > > I think the connection collapsing feature was removed long ago. It was > deemed unstable, and unmaintainable. I don't think anyone is or plan > on working on it, but we certainly would accept such contributions :). > >> >> My current version: >> Apache Traffic Server - traffic_server - 3.3.1-dev - (build # 11318 >> on Dec 3 2012 at 18:52:55) >> >> What else except proxy.config.cache.enable_read_while_writer and >> background_fill_completed_threshold, would you recommend to configure >> in case of configuration with connection collapsing. > > read-while-writer, and the fuzzy "pre-revalidate" feature are both > there to alleviate the stampeding herd problem. The latter lets you > configure a "chance" for a client request to not be served out of > cache, but instead go to origin. You tell it when to start doing this, > and what the percentage chance is (e..g 5 minutes before expiration, > and 0.1% chance). > > -- Leif > > >
