Real World JFR: Experiences Using JFR Outside the Ivory Tower
summary
Covers practical lessons from using JDK Flight Recorder (JFR) in production at Datadog to profile hundreds of thousands of JVMs. Describes trade-offs, limits, work-arounds and operational insights when running always-on, low-overhead JFR across large, mission-critical deployments on JDK 11 and back-ported JDK 8u262.
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