title: Difference between partition key, composite key and clustering key in Cassandra?
body: <p>I have been reading articles around the net to understand the differences between the following <code>key</code> types. But it just seems hard for me to grasp. Examples will definitely help  make understanding better.</p>
  
  <pre><code>primary key,
  partition key, 
  composite key 
  clustering key
  </code></pre>