Artifact Registry Lifecycle Policies Multi Region

What Artifact Registry Multi-Region and Cleanup Policies Are

Artifact Registry is Google Cloud's fully managed universal package manager and container registry. It allows repositories to be created in single regions (such as us-central1) or multi-regions (such as us, europe, or asia). Artifact Registry includes native Cleanup Policies (lifecycle rules) that evaluate container image tags, version counts, and artifact ages without requiring custom scripts or external schedulers.

How It Meets the Requirements

• High Availability & Low-Latency Access: Setting repository location to the us multi-region automatically stores and replicates artifacts across multiple data centers in the United States, providing low-latency pulls to GKE clusters in us-central1 and us-east4 without needing custom replication syncs.
• Protecting Recent Releases: A KEEP rule using mostRecentVersions with keepCount: 5 and tagPrefixes: ["release-"] guarantees that the 5 latest versions matching that tag prefix are preserved even if they would otherwise match deletion criteria.
• Indefinite Retention: A KEEP rule targeting tagPrefixes: ["stable"] ensures that any version bearing the stable tag is never removed, as KEEP rules always take precedence over DELETE rules in Artifact Registry policy evaluation.
• Automated Deletion of Untagged Images: A DELETE rule targeting tagState: "UNTAGGED" with olderThan: "14d" automatically cleans up intermediate and dangling layers after two weeks.

Key Advantages and Capabilities

• Deterministic Rule Precedence: In Artifact Registry cleanup logic, KEEP policies evaluate before DELETE policies, preventing accidental deletion of mission-critical artifacts.
• Native Multi-Region Redundancy: Provides automatic cross-regional resilience against localized regional service disruptions.
• Declarative Policy Management: Cleanup policies can be managed directly via gcloud, Terraform, or the Cloud Console using JSON/YAML policy definitions.

Why This Is Optimal

This solution relies entirely on native, declarative Google Cloud Artifact Registry features, eliminating custom script maintenance while ensuring strict governance over image lifecycle costs and multi-region availability.