tooptoop4 created FLINK-37815:
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Summary: JDBC lookup cache - dont query db even if missing
Key: FLINK-37815
URL: https://issues.apache.org/jira/browse/FLINK-37815
Project: Flink
Issue Type: New Feature
Components: Connectors / JDBC
Reporter: tooptoop4
i was looking up
[https://nightlies.apache.org/flink/flink-docs-release-1.20/docs/connectors/table/jdbc/]
and it mentions "Flink will lookup the cache first, and only send requests to
external database when cache missing, and update cache with the rows returned."
i would like a config to never send requests to db even if cache is missing.
ie i refresh cache every 2 hours, within the 2 hours if some keys sre not found
in the cache i dont look at the db for each in the meantime, just return null
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