Drupal's basic content unit is a "node," and to build a single node (or to perform any other Drupal activity), the codebase has to be bootstrapped, and everything needed to respond to the request (configuration, database and cache connections, etc
Varnish is a reverse-proxy cache that allows a site with a heavy backend (such as a Drupal site) and mostly consistent content to handle very high traffic load.
Drupal's basic content unit is a "node," and to build a single node (or to perform any other Drupal activity), the codebase has to be bootstrapped, and everything needed to respond to the request (configuration, database and cache connections, etc
Varnish is a reverse-proxy cache that allows a site with a heavy backend (such as a Drupal site) and mostly consistent content to handle very high traffic load.