Two years ago I compared pg_repack and pg_squeeze, the two extensions most of us reach for when a table has bloated beyond what autovacuum will ever give back and VACUUM FULL isn't an option. PostgreSQL 19 changes the starting point. REPACK brings VACUUM FULL and CLUSTER together under one command, and REPACK (CONCURRENTLY) does the rewrite online. It needs no extension and no shared_preload_libraries, so it works on managed services too. That will bring online repacking to a much wider audience, so I spent the last few weeks measuring what it actually does to a running database, and how it...