Database Reference
In-Depth Information
Figure 3-14
shows how read works with Cassandra storage architecture.
Figure 3-14
.
Read mechanism with Cassandra
What's New in Cassandra 2.0
Cassandra 2.0 and subsequent versions came with lots of new features and many per-
formance enhancements on the CQL3 side. Cassandra 2.0 introduces support for sever-
al key capabilities related to indexes and composite columns, including:
•
Compare and set (CAS)
•
Secondary indexes over composite columns
•
Conditional DDL
Note
Before this topic went to press, Cassandra 2.1 was released. Please see
Chapter
11
for information on several important new features in version 2.1.