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Caution
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System OverloadΒΆ
There could be multiple indications that a system is overloaded:
Timeouts
Requests shed - Requests are shed (dropped) when the system cannot process requests fast enough.
CPU at 100% when no background process (like compaction or repair) runs.
Queues are getting filled.
If you ruled out data-model problems and hardware failure, this could indicate you need to scale the system.