Esper Statements for Querying Cassandra

Query Execution

The CassandraVirtualDataWindowLookup executes a Cassandra CQL prepared statement. Cassandra-Esper uses the Datastax java driver for CQL.

Queries are executed each time a lookup is requested from Esper. We are currently testing the performance trade-off between caching results in-memory and the latency for executing a query for each lookup.

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Cassandra-Esper

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