Archive for August, 2009

PubSubHubbub, another open protocol from Google

August 6, 2009

Have you ever wonder why Google has became an Internet Giant? Answer is simple because they love being open and in return they get Love from majority of the Internet users. PubSubHubbub is another protocol that came out of Google, it is an open protocol, an extension to RSS. PubSubHubbub allows RSS feeds to be real time. From PubSubHubbub‘s Google Code page:

A simple, open, server-to-server web-hook-based pubsub (publish/subscribe) protocol as an extension to Atom (and RSS).

Parties (servers) speaking the PubSubHubbub protocol can get near-instant notifications (via webhook callbacks) when a topic (feed URL) they’re interested in is updated.

PubSubHubbub works in combination with feed readers, your feed reader should be smart enough to understand and use this protocol. The publisher will publish a special <link…> tag which tells your feedreader about the hub that this feed uses. The feedreader will then fetch the feed onces from the original feed location and will subscribe to the hub. Now feedreader does not have to poll the feed again and again to look for updates. When there will be updates on the feed, the publisher will ping hub, the hub will fetch the updates and then the hub will multicast them to the subscribers.

Recently PubSubHubbub support was added to Google Reader Shared Items and now FriendFeed uses PubSubHubbub to get Google Reader Shared Items in realtime. See the demonstration from Google Reader Blog Post:

There is also an implementation to be used by community or you can create your own hub. The community implementation is hosted on Google App Engine and can be accessed at


CentOS Administrator re-appears after the long dis-appearance…

August 3, 2009

Have you been using CentOS? If you have been using it then be happy, the Administrator has re-appeared and had meeting with all developers. If you decided to switch from CentOS after his disappearance then you should give it a second thought now. As CentOS has announced that the development will continue as it was and as the Administrator has reappeared the working agreement has been reached among the developers to resolve the remaining issues. The announcement also mentioned there should be no impact on CentOS users.

The copy of Open Letter to Lance Davic,

Note: The CentOS Development team had a normal meeting today and Lance Davis was in attendance. In the meeting a majority of issues were resolved right away and a working agreement was reached with deadlines for any unresolved issues. There should be no impact to any CentOS users moving forward.

July 30, 2009 04:39 UTC

This is an Open Letter to Lance Davis from fellow CentOS Developers

This is an Open Letter to Lance Davis from fellow CentOS Developers

It is regrettable that we are forced to send this letter but we are left with no other options. For some time now we have been attempting to resolve these problems:

You seem to have crawled into a hole … and this is not acceptable.

You have long promised a statement of CentOS project funds; to this date this has not appeared.

You hold sole control of the domain with no deputy; this is not proper.

You have, it seems, sole ‘Founders’ rights in the IRC channels with no deputy ; this is not proper.

When I (Russ) try to call the phone numbers for UK Linux, and for you individually, I get a telco intercept ‘Lines are temporarily busy’ for the last two weeks. Finally yesterday, a voicemail in your voice picked up, and I left a message urgently requesting a reply. Karanbir also reports calling and leaving messages without your reply.

Please do not kill CentOS through your fear of shared management of the project.

Clearly the project dies if all the developers walk away.

Please contact me, or any other signer of this letter at once, to arrange for the required information to keep the project alive at the ‘’ domain.


Russ Herrold
Ralph Angenendt
Karanbir Singh
Jim Perrin
Donavan Nelson
Tim Verhoeven
Tru Huynh
Johnny Hughes

So System Admins and Linux users, best of luck tweaking your CentOS servers. I hope CentOS will stay with us and will not go away as promised by the developers.