I have written a bit more about pinging and notification in my blog: http://www.syndic8.com/~jeff/blog/index.php?p=40
The future is about to get really interesting. Buckle your seat belts and hang on to your keyboards! Jeff; >>I'm sure this is a FAQ but is it only necessary to use a service like >>Ping-o-matic as frequently as one updates an RSS? >> >> > >It is actually not a FAQ, and there is no central place which tells you >everything you need to know about pinging. I would like to write such a >document, but my time is very precious right now. If someone would like >to write it, I could host it in the articles section of Syndic8 >(http://www.syndic8.com/article.php). > >Think of the ping as as signal, originating from your blog and sent out >to the world at large, saying "I have been updated." > >If you change your RSS and you don't ping, then the world at large won't >know until they re-fetch your RSS. > >Lots of tools (including those listed on the ping-o-matic home page) >accept these pings and use them to initiate some action. Think of >ping-o- >matic as a 1:N distributor -- a single ping signal enters, and it is >then echoed out to N receivers. > >Right now, Syndic8 does the following when it receives a ping on a feed >that it already knows (a lot of other stuff happens for unknown feeds, >but I won't go into that just now): > >1 - Update the "last ping" field in the feed's record >2 - Fetch the feed >3 - Compare the feed, item-by-item, with the last stored version >4 - If there are no differences, record this as a bogus ping and stop >5 - Record this as a good ping > ><pause to think -- say more, or save it for later? /> > >Aw, what the heck -- time to roll out this cool new thing... > >Step 6 is new and experimental, and I am still making some changes to >fine tune this for widespread public consumption: > >6 - Publish all of this information to a real-time event router > >The event router is a public Apache module known as mod-pubsub; more >information can be found at http://www.mod-pubsub.org/ . > >You can take a look at the event introspection application at >http://www.mod-pubsub.org/kn_apps/introspect/ to see this in action. >Open up that app and navigate to /what/syndic8.com/news/items . Each >thing in the items column is a single new news item. The items in >the column to the right of that provide additional information. This >may seem like jibberish to the uninitiated. A better demo will be >forthcoming. > >So far, the latency from the time a ping arrives at Syndic8 until >the time the new headline shows up in the introspector is around >1 second, limited mostly by the time needed to fetch the feed. Think >about that for a second. You make a change to your blog, and 1 second >later the whole world can know about it. Is this insanely great >or what? > >Watch this space, I am a bit excited about the possibilities! > >Jeff; > >On Thu, 09 Sep 2004 18:59:46 -0000, "David Bradley" ><[EMAIL PROTECTED]> said: > > >>I'm sure this is a FAQ but is it only necessary to use a service like >>Ping-o-matic as frequently as one updates an RSS? >> >>db http://www.sciencebase.com >> >> >> > > > > >To find more info about Syndicated XML newsfeeds visit http://www.syndic8.com >Yahoo! Groups Links > > > > > > > -- * RSS Feeds: http://www.syndic8.com * Blog: http://www.syndic8.com/~jeff/blog/ * Developer Books: http://www.developer-books.com * Resume: http://www.vertexdev.com/~jeff/resume.html ------------------------ Yahoo! Groups Sponsor --------------------~--> $9.95 domain names from Yahoo!. Register anything. http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/IRislB/TM --------------------------------------------------------------------~-> To find more info about Syndicated XML newsfeeds visit http://www.syndic8.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/syndic8/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
