What is the right way of letting Google's crawler know about new Atom/RSS updates?
The documentation about sitemap is clear about how to ping the crawler, but when it comes to Atom/RSS, there is only a vague reference to PubSubHubbub in their docs here:
In order for Google to not miss updates, the RSS/Atom feed should have all updates in it since at least the last time Google downloaded it. The best way to achieve this is by using PubSubHubbub. The hub will propagate the content of your feed to all interested parties (RSS readers, search engines, etc.) in the fastest and most efficient way possible.
How can I ping PubSubHubbub? Is sending post requests to
https://pubsubhubbub.appspot.com the official way of letting Google know about these updates?