Loot spawning, how exactly does it work?

[ZtruK 0]

I understand all the types and high vs low yield. I'm trying to figure out how the game decides what and when to spawn.

So if a place has 2 possible loot spawns and there is a chance of zombies to spawn as well, can they take up a loot slot?

If the two loot spawns are an AK and a tin can, someone takes the AK but leaves the can. Then there is a respawn, does it only spawn for the missing AK? That means eventually it will just be 2 tin cans and never resapwn until someone actually takes both cans away?

I've had a barn I was in respwan some loot while I was in it when another surviver came running nearby. Does this mean it spawn loot when it detects a "new" player approaching? It's not time based?

Just trying to figure out why most places I find, high yield barns and such are just chalk full of cans and whiskey bottles (redneck party barns). If you need to remove stuff to spawn, that requires quite a lot of pack space. Wondering if there is any chance of an overhaul of this system? Maybe items that haven't been touched for X time can be overwritten?

Thanks for any info!