Platform & DevOps·Running it: capacity, failure and recovery
you deliberately add two hundred milliseconds to one dependency in production and watch what the rest of the system does.
Fault injection
Also calledfailure injection, latency injection, chaos experiment
Introducing controlled failures — latency, errors, dropped packets, killed instances — to observe real behaviour rather than assumed behaviour. It is the mechanism a chaos exercise is built from, and it is most valuable in the small: injecting latency into one dependency reveals missing timeouts far more often than killing instances reveals anything. It requires a way to stop, which is why the blast-radius controls matter more than the experiment.