A TALE OF TWO FLINK AUTOSCALERS

Summary from the TLDR Data newsletter

Netflix is moving 30,000+ Flink jobs from a homegrown autoscaler toward the Apache Flink Autoscaler. The old system saved 25–45% by scaling whole clusters from container metrics, but missed operator-level state and suffered from telemetry gaps. The OSS autoscaler reasons from inside each job and produced 58% annualized compute savings for one team.