Squid Efficiency Analyzer is a lightweight, legacy log-parsing utility designed specifically to measure the bandwidth optimization of a Squid caching proxy server. Developed by Carsten Schmidt, the tool reads native Squid access logs to calculate exactly how much internet traffic is saved by local caching versus how much must be fetched directly from external web servers. Core Functionality & Logic
The software scans raw log entries and categories them into two main metrics to determine efficiency:
Cache Hits (Saved Bandwidth): Traffic served locally from the proxy. It aggregates codes such as TCP_HIT, TCP_MEM_HIT, TCP_IMS_HIT, TCP_REFRESH_HIT, and UDP_HIT.
Cache Misses (Internet Traffic): Traffic that had to bypass the cache. It aggregates codes like TCP_MISS, TCP_REFRESH_MISS, and UDP_MISS.
Excluded Traffic: Operational traffic not considered for efficiency metrics, including TCP_DENIED, TCP_NEGATIVE_HIT, and UDP_INVALID. Technical Details & Compatibility
System Environment: It is a legacy Windows-based utility originally tested and optimized for log files originating from Squid 2.5 STABLE 5 on platforms ranging from Windows NT 4.0 up to Windows XP/2003. License: It is distributed as a free system utility tool. Modern Alternatives
Because the original Squid Efficiency Analyzer is an older tool primarily tied to legacy Windows versions, administrators managing modern Linux-based Squid deployments typically use more robust, active alternatives:
SquidAnalyzer: A powerful, Perl-based incremental log processor that generates graphical HTML reports detailing hits, byte usage, top domains, and user behavior.
SARG (Squid Analysis Report Generator): An open-source tool widely used on Linux distributions to monitor internet bandwidth consumption and user browsing history.
Netdata: A real-time infrastructure monitoring platform providing interactive dashboards for Squid performance and error tracking. If you want to analyze your proxy data, tell me:
The operating system your proxy runs on (e.g., Linux, Windows)
The metrics you need to track (e.g., user activity, bandwidth savings)I can recommend the ideal modern setup or tool configuration for your environment. Squid Monitoring – Netdata
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