Re:Discord ends deal talks with Microsoft
by sascha_sl on Thursday April 29, 2021 @12:26PM
(#26983168)
at least on large servers, the search indexes are reasonably up to date and include user IDs.
(on small servers they're unfortunately on-demand, but you could still store a set of all guilds a user ever joined and build an overview)
The thing is there is no user→message mappings stored in their database. The data structures are designed for message→user traversal. Nothing like Facebook's user activity log.