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Aug 9, 2026 · Cloud Native

From VMs to Containers: Achieving Million‑QPS Elasticity with Immutable Images

Containers replace heavy VMs by sharing the host kernel, using namespaces for isolation and cgroups for resource limits, while immutable layered images lock down the runtime environment, enabling millisecond‑scale scaling, higher density, and standardized deployment that solves the elasticity, cost, and consistency challenges of million‑QPS services.