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Chapter 5. Document Metainformation > FileETag SVDH (FileInfo)

FileETag SVDH (FileInfo)inode mtime size

core

FileETag attribute

Specifies the file attributes that are used to generate the ETag response header field for documents based on files. ETag, or entity tag, values are used in cache management to save network bandwidth. See Table 5-1.

Table 5-1. File attributes used in ETag values
AttributeDescription
inodeinode number of the file
mtimeDate and time the file was last modified
sizeFile size in bytes
allAll attributes (inode, mtime, and size)
NoneNo ETag header will be included in the response


Note that if documents are served from multiple servers with mirrored filesystems, then it is best not to include the inode numbers in ETags, as these will probably differ between the servers.


  

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