title: What is the write performance of Cassandra, HBase, MongoDB or Elastic Search
body: <p>I was looking for a real test result of write performances of Cassandra, HBase, Mongodb and Elastic Search. I want to collect log data from our servers and this data is really huge. Over 10gb for an hour. </p>
  
  <p>I know everyone is talking about cassandra's write performance and these products have different areas of usage. K/V, Document Oriented or search. But I am insterested in not their storage types right now, only the write performance. for example 50K transactions per second.</p>
  
  <p>Also I want to search on top of this data.</p>
  
  <p>What is your suggestions to handle over 50K trans per second.</p>