It’s called a FIFO architecture in data handling circles.
oops LIFO
I’ve got news, the Industrial Engineers came up with that to describe warehouse inventory models before we had ubiquitous electronic computing.
On a semi-related note - I once had a professor for a major tech university on my rec tennis team. An Industrial Engineering professor.
I visited his office, and he had a bunch of Cisco literature. I asked him about it. He was doing research for them that was queuing theory related. Widgets or packets, the mathematics is the same or similar.