PubSubHubbub has two legs: 1) a light ping from publisher to the hub, 2) a fat ping (or content push) from the hub to the subscriber.
Alexis is referring to #1 not being fat. The story thus far has been if a publisher wants to fat ping, they should integrate a Hub into their CMS. Otherwise, the benefits of fat content pushing versus URL forwarding is discussed in some detail here: http://code.google.com/p/pubsubhubbub/wiki/ComparingProtocols On Mon, Oct 26, 2009 at 9:29 AM, Alexis Richardson <[email protected]> wrote: > > Alex > > PSHB is not using fat pings. There are use cases for fat pings that > are under discussion, but fat pings are not in the spec at this time. > > alexis > > > On Mon, Oct 26, 2009 at 4:12 PM, Alex Barth <[email protected]> wrote: >> >> I am *very* excited about the pubsubhubbub work I'm seeing. I consider >> making it a mainstay of our aggregation infrastructure. >> >> Reading the spec and some of the issues on project page, my main >> question is: >> >> Why does PuSH POST the entire feed to subscribers? >> >> To me it would seem more efficient that the hub exposes the updated >> feed on a URL and then POSTs only this URL to the subscribers. The >> subscribers would then GET the feed from the hub. >> >> The amount of data to be posted would be a fraction, the updated feed >> hosted by the hub could be cached with a reverse proxy like Varnish or >> Squid. Subscribers could queue URLs neatly, then work them off >> asynchronously. >> >> Further, allowing POSTing a URL where updated data can be fetched >> would open Pubsubhubbub to be applied in fields where the data feeds >> are large (look at http://data.gov). >> >> What are the reasons behind the design decision on PuSH posting fat >> pings? Is there an option to post light pings that I am overlooking? >> Are there threads I should be reading up? >> >> Alex >> >> -- >> I'm one of the geeks at http://developmentseed.org and as such I do a >> lot of work with aggregation for news tracking and Open Data in >> Drupal. Recently we launched an open source news tracker called >> Managing News http://managingnews.com. I maintain and have helped >> maintain 3 aggregators for Drupal (e. g. http://drupal.org/project/feedapi >> and its reincarnation: http://drupal.org/project/feeds). >> >
