Activity streams/News feeds with Aggregation, MySQL and Redis support

[Kenny Meyer]

I need to implement an activity feed for a Rails application with the following features:

 - Needs to work with MySQL database
 - Needs to support aggregations for similar feed stories (like Facebook)
 
There is a library out there for Python, Feedly https://github.com/tschellenbach/Feedly, which seems to be an EXACT match for what I am trying to build, but well.. I need it in Ruby.

[Kenny Meyer]

Can anyone recommend a gem/library?

[Rob Biedenharn]

http://www.ruby-doc.org/stdlib-2.1.1/libdoc/rss/rdoc/RSS.html

Rob Biedenharn

rob.bie...@gmail.com

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[Rick]

require 'simple-rss'
require 'open-uri'

@health_and_science = SimpleRSS.parse open("http://www.npr.org/rss/rss.php?id=1007")
@health_and_science.entries.each do |f|
   printf("NPR Feed: %s %s\n", f.pubDate.to_date, f.title)
end

[Kenny Meyer]

I wasn't referring to RSS feeds. I mean activity feeds as in Facebook, Etsy, etc.

[Kenny Meyer]

Unfortunately you missed the point. I wasn't referring to RSS feeds. I mean activity feeds as in Facebook, Etsy, etc.

[James Davis, PhD]

http://railscasts.com/episodes/406-public-activity
Is this what you want to accomplish? He uses the public activity gem.

[Thierry Schellenbach]

Hi guys,

I'm one of the authors of Feedly (python). So it does sound exactly like
what you're looking for but in the wrong language :)

The same team behind Feedly is also offering a hosted solution now
called getstream.io
Have a look at the getting started, https://getstream.io/get_started/
We have client libraries available for Ruby, PHP, Python and Node.

Internally its using a highly optimized system with Cassandra. It will
be substantially cheaper than running your own Redis cluster. In
addition it's currently in Beta, which means its free and comes with
free tech support :)

In case you are looking for building your own solution have a look at
this article on highscalability:
http://highscalability.com/blog/2013/10/28/design-decisions-for-scaling-your-high-traffic-feeds.html

Cheers,
Thierry

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