Squid 1.1 Information and Documentation

Squid Logfile Formats

access.log : Client Access Log
agent.log : Client Agent Log
cache.log : Error and Debugging Logging
store.log : Storage information of requested objects
store.log Version 2.x : Storage information of requested objects
log : Cache Swap Logfile for metadata on disk storage

Other Information

Caching of Objects related to HTTP response code
Squid Release Notes
Squid debug sections
Internet Cache Protocol (ICP), version 2
SNMP OID overview, Version 2