Hi, we use Cassandra to store some association type of data. For example, store user to course (course registrations) association and user to school (school enrollment) association data. The schema for these two types of associations are the same. So there are two options to store the data: 1. Put user to course association data into one keyspace, and user to school association data into another keyspace. 2. Put both of them into the same keyspace. In the long run, such data will grow to be very large. With that in mind, is it better to use the first approach (having multiple keyspaces) for better performance? Thanks.
George