manticore, earlier sphinx search, has been rock solid for us for the past 16 years. now serving searches across nearly 300M short documents. we're using it in the old mode - where full index is re-created every 24h.
it's great to see that the project is alive and adding embeddings-related functions needed for semantic search.
aspect worth noting: up to my knowledge HE's tunnel will work only if you're assigned public IPv4 by your ISP. if you're behind a carrier grade NAT - too bad, you'll need to use another solution to get IPv6 to your home.
environment: KVM VMs running on physical hardware managed by us.
we have a belt & suspenders approach:
* backups of selected files / database dumps [ via dedicated tools like mysqldump or pg_dumpall ] from within VMs
* backups of whole VMs
backups of whole VMs are done by creating snapshot files via virsh snapshot-create-as, rsync followed by virsh blockcommit. this provides crash-consistant images of the whole virtual disks. we zero-fill virtual disks before each backup.
all types of backups later go to borg backup[1] [ kopia[2] would be fine as well ] deduplicated, compressed repository.
this approach is wasteful in terms of bandwidth, backup size but gives us peace of mind - even if we miss to take file-level backup of some folder - we'll have it in the VM-level backups.
as far as i understand apparent death of sphinx and demand for continued development/support from big users of it led to creation of manticore.