Simply said, PubSubHubbub (aka as PuSH in short) is publish/subscribe protocol addon to the current Atom/RSS technology. It enables your RSS subscribers to instantly receive your feed as soon as you publish your content.
What exactly does PubSubHubbub do?
Previously, when you publish a content, it doesn’t get push to the feed aggregator automatically. Instead, the feed aggregator poll your site (RSS feed) at regular interval and check if you have new content. If yes, it will then broadcast to your subscribers. With this push technology, there is often a delay in syndication and it could be several hours after your content went live before your RSS subscriber can read it on their RSS reader software. PubSubHubbub aims to get rid of this time-delaying barrier and make everything real time. This means that as soon as you publish the content, your end subscriber will also receive it instantly. The technology is simple. Instead of the feed aggregator constantly polling your site for new content, it will now act as a hub. Whenever you publish a new content, you notify the hub, which in turn send your update to the end user. You can watch the interesting video below for better understanding.
Sound simple, but how do I implement it in WordPress?
Feedburner way Now, if you are using Feedburner to manage your feed, your site is already PuSH enabled. You just need to turn on the service in the Feedburner Dashboard. Go to Feedburner and login to your account (most likely is your Google account). Click on the Publicize tab at the top.
On the left, click Pingshot.
Click the Activate button to enable the service.
That’s it. (You may also want to ensure that http://ping.feedburner.com is in your ping list) Custom feed If you are using the default WordPress feed rather than Feedburner, there are several plugins that you can use to PuSH-enabled your blog
1. PuSHPress
PuSHPress is the plugin used in WordPress.com. There is no configuration required. Simply activate the plugin and you are good to go. The big difference in this plugin compared to the other PuSH WordPress plugins is that it includes a PuSH hub built in. Download PuSHPress here
2. PubSubHubbub
Another simple plugin that requires minimal configuration. This plugin does not implement a hub, but it allows you to select which hubs you want to ping. The default is Demo hub on Google App Engine and SuperFeedr.
Download PubSubHubbub here
3. WP Pubsubhubbub
This plugin is functionally similar to the PubSubHubbub plugin mentioned above. It allows you to specify the hubs you want to ping as well, so choosing this or the other is really dependent on individual preferences. Download WP PubSubHubbub here Have you started implementing PubSubHubbub in your WordPress blog?
