title: How to increase the write performance in cassandra?
body: <p>I have a column family called Emails and i am saving mails into this CF, it is taking 100+seconds to write 5000 mails . </p>
  
  <p>I am using i3 processor, 8gb ram .
  My data center has 6 nodes with replication factor = 2.</p>
  
  <p>Does the size of the data what we store into the Cassandra affects the performance ? 
  What are all the factors that affects write performance and how do i increase the performance ?</p>
  
  <p>Thanks in advance..</p>