if you've got an app that constantly uses more memory then it's either a memory leak or poor tuning which results in that. An app without a CPU limit can compl

if you've got an app that constantly uses more memory then it's either a memory leak or poor tuning which results in that. An app without a CPU limit can completely consume the hosts CPU and take down everything else on that node. If you've got a very large instance with a lot of apps, a bunch of them are gonna experience a poor QoS. Their tale suggests their sidecar pods/containers (which likely didn't have limits) made their production issues worse. a CPU limit on those pods would have limited the damage those pods caused to the rest of their infra.