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feat: Add EC2 region detection and cost optimization features

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Simone Scarduzio
2025-10-12 22:41:48 +02:00
parent 4f56c4b600
commit b2ca59490b
8 changed files with 504 additions and 8 deletions
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README.md
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@@ -558,6 +558,12 @@ deltaglider migrate --exclude "*.log" s3://old/ s3://new/
- **Resume Support**: Migration automatically skips files that already exist in the destination
- **Progress Tracking**: Shows real-time migration progress and statistics
- **Safety First**: Interactive confirmation shows file count before starting
- **EC2 Cost Optimization**: Automatically detects EC2 instance region and warns about cross-region charges
- ✅ Green checkmark when regions align (no extra charges)
- ℹ️ INFO when auto-detected mismatch (suggests optimal region)
- ⚠️ WARNING when user explicitly set wrong `--region` (expect data transfer costs)
- Disable with `DG_DISABLE_EC2_DETECTION=true` if needed
- **AWS Region Transparency**: Displays the actual AWS region being used
- **Prefix Preservation**: By default, source prefix is preserved in destination (use `--no-preserve-prefix` to disable)
- **S3-to-S3 Transfer**: Both regular S3 and DeltaGlider buckets supported