![]() The Frontier distributed database caching system, which is used by the LHC projects ATLAS and CMS, depends on proper working of this feature, so that is a big reason why the WLCG maintains this squid distribution. The most important feature of frontier-squid is that it correctly supports the HTTP standard headers Last-Modified and If-Modified-Since better than other distributions of squid. The frontier-squid package contains configuration defaults and bug fixes that are known to work well with the applications used on the grid, plus some extra features in the packaging (see below). The most important reason is that with frontier-squid you get the benefit of many years of collective operational experience on the WLCG. įor rapid response to configuration questions, send e-mail to Most questions can also be answered on the user's mailing list use frontier-squid instead of regular squid? If you have any problems with the software or installation, or would like to suggest an improvement to the documentation, please submit a support request to the Frontier Application Development JIRA. Having squid listen on a privileged port.Log compression interfering with squid operation.Inability to reach full network throughput.Enabling discovery through WLCG Web Proxy Auto Discovery.Changing the size of log files retained.Moving disk cache and logs to a non-standard location.Why use frontier-squid instead of regular squid?.Installing a Frontier squid cache server.All WLCG users should register their squids with the WLCG. Note to users of EGI's UMD repository: the same package is also available in UMD so it might be easier for you to get it from there.Īfter completing a squid installation and configuration, CMS users should follow these further instructions for CMS squids. Note to Open Science Grid users: this same package is also available from the Open Science Grid so it will probably be more convenient to you to follow the OSG frontier-squid installation instructions. Many people also use it for other applications as well if you have any questions or comments about general use of this package contact. This installation is recommended for use by Frontier in the LHC CMS & ATLAS projects, and also works well with the CernVM FileSystem. The frontier-squid software package is a patched version of the standard squid http proxy cache software, pre-configured for use by the Frontier distributed database caching system. ![]()
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