Two options: a) use a reasonably short retention period, e.g. 6 weeks b) if you key your entries in Kafka, a new entry with the same key will overwrite the old

Two options: a) use a reasonably short retention period, e.g. 6 weeks b) if you key your entries in Kafka, a new entry with the same key will overwrite the old one. That way you could overwrite PII content with an empty message.