Squid Web Cache wiki

Squid Web Cache documentation

🔗 Schedule for Feature Removals

Certain features are no longer relevant as the code improves and are planned for removal. Due to the possibility they are being used we list them here along with the release version they are expected to disappear. Warnings should also be present in the code where possible.

Removed in version Feature Why
Deprecated in 6.0    
TBD URN THTTP gateway IETF deprecation and move to historic.
6.0 HPUX-specific build Superseded by ./configure arguments.
6.0 AIX 6.1 support Obsolete OS version.
6.0 TCP Lingering WAIT Broken and unused for many years.
6.0 X-Cache and X-Cache-Lookup Superseded by HTTP Cache-Status feature.
     
Deprecated in 5.0    
TBD BerkleyDB support Superseded by TrivialDB which has better support by distributors.
     
Deprecated in 4.0    
4.0 ESI custom parser Limited usability and repeated security issues.
     
Deprecated in 3.5    
TBD ssl_bump server-first Obsolete and broken security. Superseded by peek-n-splice
TBD SSLv3 support Obsolete and very broken security. But still widely used so no firm ETA.
4.0 SSLv2 support RFC 6176 compliance.
     
Deprecated in 3.4    
3.5 COSS storage type Superseded by ROCK storage type
     
Deprecated in 3.3    
TBD ssl_bump client-first Obsolete and very broken security. Superseded by ssl_bump server-first
     
Deprecated in 3.2    
TBD cachemgr_passwd Security is better controlled by login acl in the http_access configuration
TBD cachemgr.cgi Merger of report functionality into the main squid process obsoletes it as a stand-alone application.
6.0 UFS cache auto-upgrade Unused since Squid-3.2.
     
Deprecated in 3.1    
TBD error_directory files with named languages Superseded by ISO-639 translations in langpack
TBD Netmask Support in ACL CIDR or RFC-compliant netmasks are now required by 3.1. Netmask support full removal yet to be decided.
3.5 dnsserver and DNS external helper API Internal DNS client now appears to satisfy all use-cases.
3.2 Multiple languages per error page. Superseded by auto-negotiation in 3.1+
3.2 TPROXYv2 Support TPROXYv4 available from 3.1 and native Linux kernels
3.1 libcap 1.x libcap-2.09+ is required for simpler code and proper API usage.
3.1 cache_dir null Default for cache_dir has been changed to not using a disk cache.
     
Deprecated in Squid-3.0 or earlier    
TBD recv-announce tool Broken code since Squid-2.5.
6.0 cache_diff tool Unused for some years.
6.0 CPU profiler Broken feature. Superseded by external tools (eg oprofile).
6.0 leakfinder Superseded by external tools (eg valgrind).

Categories: Feature

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