Apache では静的ファイルの ETAG をどうやって生成しているのか確認してみたくなったので調査。 FileETag Directive は次のように説明されている The FileETag directive allows you to choose which of these — if any — should be used. The recognized keywords are: INode The file's i-node number will be included in the calculation MTime The date and time the file was last modified will be included Size The number of bytes in the file will be included All All ava