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1: Lambda Versions & Aliases

·1 min

How do versions and aliases work?

  • Aliases are pointers to diff versions.
  • Each function has a unique ARN
  • Versions are immutable
  • Latest version gets $Latest tag

Aliases get their own ARN!

  • Dev and Prod aliases are good to have!

What are aliases good for?

  • Canary deployments: Send 10% of traffic to new version
  • No downtime with rapid rollback
  • Good for debugging applications

Careful pointing multiple aliases to same version!