title: schema design for cassandra
body: <p>I am working on a project of forum that allows a user to follow questions on certain topics from his network.</p>
  
  <p>A user's news-feed wall comprises of only those questions that have been posted by his connections and tagged on the followed topics. I am confused what database's datamodel would be most fitting for such an application. 
  I have been looking at Cassandra and MySQL solutions as of now. </p>
  
  <p>After my study of Cassandra I realized that Simple news-feed design that shows all the posts from network would be easy to design using Cassandra by executing fast writes to all followers of a user about the post from user.
  But for my kind of application where there is an additional filter of 'followed topics', I could not convince myself with a good schema design in Cassandra. I hope if I missed something because of my short understanding of cassandra, perhaps, can you please help me out with your suggestions of how this news-feed could be implemented in Cassandra ?</p>