TLDR Tech / Data
A tale of two Flink autoscalers
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.
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