Dzone iconDzoneSep 3, 2026 ~1 min source read

The Startup Time Trick Hiding Inside Your Docker Build

Every Java developer who runs services on Kubernetes has watched this scene play out. During those ten seconds, your existing pods absorb the extra load, latency climbs, and if things are bad enough, the autoscaler panics and adds even more pods that are also not ready.

The Startup Time Trick Hiding Inside Your Docker Build

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Every Java developer who runs services on Kubernetes has watched this scene play out.

During those ten seconds, your existing pods absorb the extra load, latency climbs, and if things are bad enough, the autoscaler panics and adds even more pods that are also not ready.

I spent years treating Spring Boot startup time as a fact of life, the way you treat weather.

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The useful part

Every Java developer who runs services on Kubernetes has watched this scene play out. During those ten seconds, your existing pods absorb the extra load, latency climbs, and if things are bad enough, the autoscaler panics and adds even more pods that are also not ready. I spent years treating Spring Boot startup time as a fact of life, the way you treat weather.

Details worth keeping

Traffic spikes, the autoscaler adds a pod, and then everyone waits. The application is not ready for another twelve seconds.

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