Memcached and Memcached support Memcached achieves dynamic websites acceleration by caching data in RAM, which reduces the number of times an external data source (database) must be read.
What is CGI, FastCGI? CGI is a web technology and protocol that defines a way for a web server (HTTP server) to interact with external applications, e.g. PHP.
I/O (Input/Output Operations) I/O drive operations can be calculated as the number of I/O operations performed per second (IOPS) or as a transfer speed.
Redis Features and Support Redis is similar to Memcached that enables you to store data. The tool is used to speed up website loading by caching data and objects in RAM.