I hadn’t heard of Pleroma. It seems like it uses a JSONB class in PostgreSQL to run lighter, but now it federates with the rest.
Mastodon is, internally, based around the concept of “Statuses”. It uses ActivityPub to federate, but it has no internal concept of Activities, it just generates ‘fake’ Activities for message exchange.
Pleroma is ActivityPub even in its internal data structures. Activities are actually saved as JSON in the database, so the external and internal representations are the same.
Sounds cool, but time to dive in and find out what it means.
