Node & Failure Model – Crashes, Slow Nodes and Partial Failure
In distributed systems, nodes don’t just crash. They slow down, restart, and fail partially — often while appearing healthy.
Failure Model
System Models – How Distributed Systems See the World
A system model is not how the world actually behaves. Instead, it is a simplified set of assumptions about how a distributed system might behave — assumptions that allow engineers to design, analyze, and reason about correctness.