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Amazon ECR now supports cross-repository layer sharing to optimize storage and improve push performance

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This article announces blob mounting support in Amazon ECR, enabling cross-repository layer sharing within a registry.

  • Share common image layers across repositories to reduce storage costs
  • Faster image pushes by reusing existing layers instead of re-uploading
  • Particularly beneficial for microservices built from common base images
  • Enable via ECR console or AWS CLI at registry level
  • ECR automatically handles layer sharing after enabling
  • Available in all AWS commercial and GovCloud (US) regions

Blob mounting optimizes ECR storage efficiency and push performance for organizations managing multiple applications with shared base images.



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