Rogers Cadenhead recently posted his thoughts on why the rssCloud concept
"failed to catch on." This is a response to his post and an attempt to
foster further discussion in the community.
### Blue Sky
The main idea behind rssCloud is that your RSS reader can ask to be notified
when a feed changes (push), rather than having to check the feed on a regular
basis (pull). This is accomplished by having your RSS reader subscribe to
updates with the feed server. When the feed is updated, the server will then
notify your RSS reader accordingly. This message pattern is known as
publish/subscribe or just "pub/sub."
On the face of it, it's a great idea. The benefits of pub/sub are well-
understood. Pub/sub (push) can be far more efficient than polling (pull) in
many cases, especially when it saves the client from either having to make
frequent connections to the server and having to analyze the response looking
for what has changed.
Unfortunately, the way rssCloud needs to be implemented has what I fear to be
significant and potentially fatal flaws. Before I dig into them, it's
helpful to provide a little background on best ...