Region

The impact of regional data storage in DeltaStream

A region specifies the cloud and cloud region from where you access your streaming stores (such as Apache Kafka and AWS Kinesis), and is also where DeltaStream runs its queries.

When you create a DeltaStream store, you must specify an access_region. All queries that use the store run in the specified access_region. It is possible to use an access_region that differs from the cloud/region hosting the database. But this incurs additional cost and latency due to cross-region traffic.

Here's an example: When you create an MSK store, if you specify us-west-1 as the access region, all the queries in DeltaStream that read and write from this store run in the us-west-1 region.

For a list of supported access_regions, use the SHOW REGIONS command.