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Google PageSpeed is a family of tools by Google, Inc. designed to help optimize website performance. It was introduced at a Developer Conference in 2010. There are four main components of PageSpeed family tools: PageSpeed Module (consisting of mod PageSpeed for the Apache HTTP Server and NGX PageSpeed for the Nginx), PageSpeed Insights, PageSpeed Service, and the PageSpeed Chrome DevTools ...
Web performance optimization improves user experience (UX) when visiting a website and therefore is highly desired by web designers and web developers. They employ several techniques that streamline web optimization tasks to decrease web page load times. This process is known as front end optimization (FEO) or content optimization.
Time to first byte. Time to first byte ( TTFB) is a measurement used as an indication of the responsiveness of a webserver or other network resource. TTFB measures the duration from the user or client making an HTTP request to the first byte of the page being received by the client's browser. This time is made up of the socket connection time ...
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PHP has a direct module interface called SAPI for different web servers; [272] in case of PHP 5 and Apache 2.0 on Windows, it is provided in form of a DLL file called php5apache2.dll, [273] which is a module that, among other functions, provides an interface between PHP and the web server, implemented in a form that the server understands. This ...
Tools for benchmarking. Load testing (stress/performance testing) a web server can be performed using automation/analysis tools such as: Apache JMeter, an open-source Java load testing tool. ApacheBench (or ab), a command line program bundled with Apache HTTP Server. Siege, an open-source web-server load testing and benchmarking tool.
Web testing. Web testing is software testing that focuses on web applications. Complete testing of a web-based system before going live can help address issues before the system is revealed to the public. Issues may include the security of the web application, the basic functionality of the site, its accessibility to disabled and fully able ...
In software development, time-of-check to time-of-use ( TOCTOU, TOCTTOU or TOC/TOU) is a class of software bugs caused by a race condition involving the checking of the state of a part of a system (such as a security credential) and the use of the results of that check. TOCTOU race conditions are common in Unix between operations on the file ...