Webmaster in a Nutshell, 3rd Edition By Robert Eckstein, Stephen Spainhour
Table of Contents
Chapter 18. Apache Configuration
FileETag
FileETag flags
Configures how the server forms the ETag response header used for network cache management. The header value is formed from a combination of certain file attributes. The flag keywords can be used in the directive with a plus or minus in front of them to indicate if they will be included or excluded from the determination with respect to a broader scope. The flags are:
INode
The file's inode number
MTime
The last-modified data and time of the file
Size
The size of the file
All indicates all three attributes should be used. None specifies that no ETag value should be added.
