cassandra Internode transport protocol
<p>I am trying to understand how Cassandra serializes data and transports them between nodes. </p>

<ul>
<li><p>I'd like to know the protocol (Protocol buffer? MessagePack?, Custom?) that is being used to transport data between nodes in a cluster.</p></li>
<li><p>My current understand is that CQL is used for client-server communication. Is this also true for server to server communication?</p></li>
</ul>