Recently we moved from Oracle to Cassandra. In Oracle we were using advance analytical functions such as lag, lead and Macth_Recognize heavily.
I was trying to identify equivalent functionality in java, and came across Apache Flink, however I'm not sure if I should use that library in stand-alone java applications using their CollectionsEnvironment. Anyone have ever used Apache Flink for such purpose, what is overhead of using this library in Web Services.
