PostgreSQL 18 favourites

@winand.at noted on Bluesky : New PostgreSQL tag: REL_18_BETA1 So many features to check out… My personal favorites are: generated columns - trading compute for space, defined in single place and once, uuidv7() - time-sortable UUIDs, idle_replication_slot_timeout - automatic cleanup of unused replication slots, gin_index_check() - more consistency checks, e.g when test-restoring backups.