We faced a weird issue with Hector, one of the API which we developed to read data from cassandra crashed when we tried integrating DAO layer with other app dependencies. We were shocked and had no clues on what went wrong. Though the code we developed was thoroughly tested.

Cassandra composites as discussed in Datastax blog influenced us to adapt composite modelling in one of our pilot project. We used Hector APIs as the client library for this assignment. Below is the column family example which uses composite comparator type.

Prologue

Rich media applications (RIA) have led to a tremendous acceptance of web applications. And along with this, instead of HTML travelling back and forth, XMLs are interchanged to communicate the information. Before the advent of JSON, XML was considered as the de-facto interchange language of the web. 

Further, with growing acceptance of web services in the community, XML interchange is becoming very popular style of data interchange.
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