What is the current required size for the database?

[vlad20012]

Also, it would be nice to document it in the readme.

[Glandos]

There is no limit on the size. Mine is currently 31GiB, with 10.7 millions torrents and 332.3 millions indexed files.

[skobkin]

It depends only on how long are you running the indexer and how many data it got.

80G     /var/lib/postgresql/12/main/base