the.com/middleware
the plumbing between apps that lets them pretend they were always friends.
means software that sits between two systems and translates, connects, or brokers data so they can work together without either one knowing the other's secrets.
from coined in the 1980s to describe the connective tissue in distributed computing — the unglamorous glue between operating systems and applications, back when networks first had to talk to each other.
invisible by designyou only notice it when it breaks
api gatewaysa modern descendant, still doing the glue job
web frameworks use itexpress.js middleware runs on every request