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cloud-engineering

Auto-scaling

Auto-scaling

Definition

Auto-scaling automatically adjusts the number of running compute instances based on observed load metrics like CPU utilization, request queue depth, or custom metrics. Horizontal scaling adds or removes instances; vertical scaling changes instance size.

Cloud auto-scaling groups (AWS ASG, GCP MIG) handle the provisioning lifecycle, enabling systems to handle traffic spikes without over-provisioning for baseline load.


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