[shortishly]

Tansu author here. Storage is a pluggable choice of: PostgreSQL, memory, SQLite or S3. There are others in the pipeline (SlateDB, ...).

[youngtaff]

Any chance of a Parquet compatible storage choice?

[shortishly]

Yes: with a schema backed topic (AVRO, JSON or Protocol buffer) Tansu can write to Apache Iceberg, Delta or Parquet. You can use a Sink topic to write directly to an open table format (including Parquet) skipping (most of) the Kafka metadata.

https://blog.tansu.io/articles/parquet