> Mechanical engineering has specifications for "bug" tolerance. That's what these days is referred to as an SLO. Golden signals, USE, RED are ways of measur

> Mechanical engineering has specifications for "bug" tolerance. That's what these days is referred to as an SLO. Golden signals, USE, RED are ways of measuring them on a high level. You program your systems to be resilient to a certain level of failure (retries, graceful failure), and you program them to be able to cope without a malfunctioning part by isolating it from the rest of the system (circuit breakers, bulkheads).