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.