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Google PageSpeed is a family of tools by Google, Inc. [1] designed to help optimize website performance. [2] It was introduced at a Developer Conference in 2010. [3] [4] There are four main components of PageSpeed family tools:
Urchin Tracking Module (UTM) parameters are five variants of URL parameters used by marketers to track the effectiveness of online marketing campaigns across traffic sources and publishing media. They were introduced by Google Analytics ' predecessor Urchin and, consequently, are supported out of the box by Google Analytics.
Website change detection allows interested parties to be alerted when a website has changed. A web crawler can periodically scan a website to see if any changes have occurred since its last visit. Reasons to track website changes include: Enhanced automation: Triggering in Event-driven programming
Web tracking is the practice by which operators of websites and third parties collect, store and share information about visitors' activities on the World Wide Web. Analysis of a user's behaviour may be used to provide content that enables the operator to infer their preferences and may be of interest to various parties, such as advertisers.
If a web server responds with Cache-Control: no-cache then a web browser or other caching system (intermediate proxies) must not use the response to satisfy subsequent requests without first checking with the originating server (this process is called validation). This header field is part of HTTP version 1.1, and is ignored by some caches and ...
The Mobile Package contains server-side tracking codes that use PHP, JavaServer Pages, ASP.NET, or Perl for its server-side language. [49] However, many ad filtering programs and extensions such as Firefox 's Enhanced Tracking Protection, [ 50 ] the browser extension NoScript and the mobile phone app Disconnect Mobile can block the Google ...
Server side validation, Client Side Validation (JQuery) Apache Sling: Java Yes Yes Push-pull Uses JCR content repository Yes Yes Yes Apache Struts: Java Yes Yes Push-pull Yes Yes Unit tests: Yes Yes Apache Tapestry: Java Prototype, jQuery Yes Pull Yes JPA, Hibernate, Cayenne: Selenium, TestNG, JUnit: Spring Security, Shiro Yes with extensions
A forward cache is a cache outside the web server's network, e.g. in the client's web browser, in an ISP, or within a corporate network. [3] A network-aware forward cache only caches heavily accessed items. [4] A proxy server sitting between the client and web server can evaluate HTTP headers and choose whether to store web content.