General

Is there a row limit on the results of a query?

The row limit for all query results is set to 10,000 rows by default. You may specify a row limit up to 50,000 in query parameters for an individual query. If more rows are needed, we recommend using pagination in your application to request more rows.

Can I try Cube Cloud for free?

Yes. Cube Cloud provides free development instances and a set of paid tiers (opens in a new tab). Each tier comes with additional features, however, you're welcome to use development instances indefinitely if they satisfy your needs.

What is the difference between CUBEJS_CONCURRENCY and CUBEJS_DB_MAX_POOL?

CUBEJS_CONCURRENCY specifies the maximum number of queries that can be executed concurrently on your source database. This variable should reflect the limitations of your database, and will help limit the number of queries that are sent from cube.

CUBEJS_DB_MAX_POOL allows you to set a maximum number of connection pools to your database. This only applies to databases that use connection pooling (Postgresql, Redshift, Clickhouse) and is not applicable to databases without it (BigQuery, Snowflake). The concurrency limit specified in CUBEJS_CONCURRENCY will supersede the number of connections if it is lower.

For example, if your database has a hard concurrency limit of 10 that cannot be changed, but you wish to raise the concurrency limit to 50 you would first set CUBEJS_CONCURRENCY=50 and CUBEJS_DB_MAX_POOL=5 or higher. Note that some data warehouses (BigQuery, Snowflake) do not use connection pooling so this parameter is not applicable.