In computing, latency is the time between initiating a request for a data in memory until it is retrieved. It is a fundamental measure of the speed of memory: the less the latency, the faster the data retrieved.
It is a subscription free operating system based on Unix. It is gaining popularity as it is a powerful, low-cost operating system for running Web servers.
A system used for sending mails automatically to subscribers who are on its list. Using e-mail, you can participate in listservs pertaining to your topics of interest. It is one of the most widely used newsletter servers.