Continuous Queries

Continuous queries are similar to regular database queries with a few key differences as they run on data streams.

Difference from regular database queries

Database Queries Continuous Queries
Invoked manually Always running
Results available on query completion Results are always available
Aggregations for a fixed time interval Aggregations for sliding windows and session windows

How to define continuous queries

Upsolver's user interface acts as a query builder directly on raw file formats like JSON and CSV.

How to retrieve the results

There are 2 options:

  • Query API to get the most current query results.
  • Incrementally sending the query results to an Output.

Retroactive queries with Amazon S3

Upsolver curates all incoming events on Amazon S3 so continuous queries could start running retroactively, saving the time spent waiting for data to accumulate.

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