ReferenceIncidents
Era 2 · SeedJVM warmup under load
An Autoscaler added Java App Servers during a spike, and the new copies ran cold: 30% speed for their first 30 s.
What happens#
An Autoscaler added Java App Servers during a spike, and the new copies ran cold: 30% speed for their first 30 s.
How to prevent it#
Slow start on the Load Balancer, scheduled scaling, and a GraalVM native image, which starts warm. With slow start a new copy takes traffic gradually, so it never answers cold.
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