Hey, Akwin

with Apollo Federation and the Apollo Gateway, you can keep the gateway running even if one or more subgraphs are temporarily unavailable. The Apollo Gateway acts as a single entry point for your clients and manages the federation of multiple subgraphs.

It's worth noting that if a subgraph is down, any queries or mutations that rely on data from that specific subgraph will return an error or incomplete results. The gateway won't magically provide data from an unavailable subgraph. However, it will ensure that other subgraphs can continue to operate independently.