No, nothing like that much data. It's aggregates like "requests per second" and "attacks per second" etc. The actual log lines aren't stored.
More details: https://blog.cloudflare.com/scaling-out-postgresql-for-cloud...
More details: https://blog.cloudflare.com/scaling-out-postgresql-for-cloud...
Sadly it does not give a figure/order of magnitude of the amount of data that's stored in citus after aggregation, but I guess it's just not public information. [I'm working on a system that is somewhat similar to CitusDB (eventql.io) and am always really interested in these numbers]
EDIT: I can't reply to your other comment for some reason but many thanks for digging that up, it's very interesting info to me!