Comtech EF Data FX series 1005 Administrator's Manual page 121

Comtech EF Data / Stampede
HTTP Log Format
Each line of the FX HTTP log represents a separate HTTP request. Each line has the following
format:
OriginatorsIP streamInfo AccelerationTechnique - [TimeStamp] "HTTPRequest"
HTTPStatus Bytes
OriginatorsIP is the IP address of the client that made the request
StreamInfo is seven strings separated by commas. The first three strings are hex digits
that represent flow identifiers.
The next 4 strings are:
AccelerationTechnique is one of:
"MISS" - The object was not in the cache but written/updated in cache
[TimeStamp] is the date and time of when the HTTP request was processed.
"HTTPRequest" is the full URL to the content requested
"HTTPStatus" is the HTTP status code. Bytes are the number of payload bytes sent
back to the user. This does not include the number of bytes in the HTTP header.
FX Series Administration Guide - Version 6.2.2
Chapter: FX Series Status
Section: FX Series ADC Status

fbr=nnn where nnn is number of milliseconds since the client request came in
until the first byte was received from web server

lbr=nnn where nnn is number of milliseconds since the client request came in
until the last byte was received from the web server

fbs=nnn where nnn is number of milliseconds since the client request came in
until the first byte was sent back to the client

lbs=nnn where nnn is number of milliseconds since the client request came in
until the last byte was sent back to the client

"IMS-HIT" - The client issued an If-Modified-Since request for an object which
was in the cache and fresh.

"INM-HIT" - The client issued an If-None-Match request for an object which
was in the cache and fresh.

"HIT" - The object was returned from cache

"CV-HIT" - The object was returned "Not Modified" from the content
validation cache

"DIFF_HHIT" – Cache difference of just the response HTTP header

"DIFF_HIT" – Cache difference of the object

"REFRESH-UNMODIFIED" – The requested object was cached but STALE. The
IMS query for the object resulted in "304 not modified"

"REFRESH-MODIFIED" – The requested object was cached but STALE. The IMS
query returned the new content.

"404-HIT" - The object was returned a 404 Not Found based on the freshness
of the 404 cache object
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