The `finally` block in JavaScript ensures code runs every time, regardless of errors, preventing resource leaks and memory issues by releasing external resources like files, network connections, or databases after use.
Explains how Kubernetes auto-scaling enables apps and clusters to adapt to changing workloads via metrics (CPU, memory, custom) that drive Horizontal Pod Autoscaling and Cluster Autoscaling, reducing waste, latency, and costs; details the collect-calculate-act workflow, best practices (clear policies, monitoring, strategy, rolling updates), and real-world uses in e-commerce, IoT, and real-time analytics.
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