title: Cassandra time series data
body: <p>We are looking at using Cassandra to store a stream of information coming from various sources.</p>
  
  <p>One issue we are facing is the best way to query between two dates.</p>
  
  <p>For example we will need to retrieve an object between datetime dt1 and datetime dt2.</p>
  
  <p>We are currently considering the created unix timestamp as the key pointing to the actual object then using get_key_range to query to retrieve?</p>
  
  <p>Obviously this wouldn't work if two items have the same timestamp.</p>
  
  <p>Is this the best way to do datetime in noSQL stores in general? </p>