Pattern: Object storage lifecycle rules

Define lifecycle rules for object storage to move objects to cheaper storage or drop them entirely.

Context

By default, objects stored in cloud object storage are retained, and therefore billed, indefinitely. Objects also have a storage class or access tier, which can be used to balance access performance and cost depending on the use case.

Solution

By configuring lifecycle rules or policies, objects can be transitioned to cheaper storage classes or deleted after a certain amount of time.

Example

Transition objects under the "log/" prefix to the Glacier storage class after 60 days, and expire after 90 days:

resource "aws_s3_bucket_lifecycle_configuration" "example" {
  bucket = aws_s3_bucket.bucket.id

  rule {
    id = "log"

    expiration {
      days = 90
    }

    filter {
      prefix = "log/"
    }

    status = "Enabled"

    transition {
      days          = 60
      storage_class = "GLACIER"
    }
  }
}

IaC Cost Patterns

Pattern: Object storage lifecycle rules

Context

Solution

Example

References

Occurrences

Terraform

AWS CloudFormation