mod_fastcgi is a well-known and widely used 3rd party module. It is known for its high-quality support and performance offered mainly for the FastCGI protocol. It is available for static, dynamic and external FastCGI applications and provides scope for configuration through the FastCGI server, FastCGI config and FastCGI ExternalServer directives. Mod_fastcgi is recognized for being a scalable and open extension. FastCGI applications are widely used for their fast performance and high level of persistence. They are designed to be easily portable as well.

Mod_fastcgi is known for providing several directives such as FastCgiWrapper, FastCgiAuthorizer, FastCgiAuthorizerAuthoritative, FastCgiAcessChecker, FastCgiAccessChecker Authoritative and FastCgilpcDir, among others.

Google PageSpeed Insights (PSI) is a Google service available for use on both desktops and smartphones. It provides detailed reports on the performance of the web pages. Its objective is to help empower its user base to optimize the performance of its web pages. It gives users access to lab data and field data along with real-user experience data. 

Google PageSpeed Insights provides users with an accurate assessment of the performance of the webpages based on three classifications, namely, good, needs improvement and poor. It provides vital performance signals along with performance diagnostics through ‘Lighthouse’. It provides information on the audits passed by the page as well.

Comparison mod fastcgi vs Google PageSpeed