Advanced Features
The Advanced tab gives you quick access to a set of advanced features, among them the Memcached distributed memory caching system and the Varnish Cache web accelerator, which will help you optimize your web sites and apps without the need to leave the Control Panel. Depending on the hosting package, these features are either included by default or are offered in the form of easily gettable upgrades. InnoDB and NodeJS support is offered too.
Varnish
Varnish Cache is a web accelerator also known as a caching HTTP reverse proxy. You can install it in front of any server that speaks the HTTP protocol and configure it to cache the contents. Varnish Cache is very, very fast and will improve your web site's loading speed. One of the major attributes of Varnish Cache is the flexibility of its configuration language, VCL, which allows you to choose how incoming requests should be handled.
Memcached
Memcached is a generic memory caching system for boosting the speed of dynamic database-powered web sites. It is used to decrease the number of times an external data source (such as a database or API) is read by caching data and objects in RAM. The Memcached system uses a two-tier architecture. The Memcached distributed memory object caching system is used by some of the most frequently visited websites on the World Wide Web and is supported by popular Content Management Systems like Joomla and WordPress.
Node.js
Node.js is a software system for building scalable Internet applications. Built on Chrome's JavaScript runtime, Node.js uses an event-based, asynchronous input/output model that makes it lightweight and effective, perfect for high-performance content-intensive applications. Node.js uses Google's V8 JavaScript engine, libUV, and a number of built-in libraries.
InnoDB
InnoDB is the default storage engine for the MySQL open-source relational database management system. A storage engine is the principal software component that a DBMS uses to create, read, modify and delete data from a database. The latest version of InnoDB offers considerable improvements in efficiency, security and usability. InnoDB offers the standard ACID transaction features, along with declarative referential integrity support. It is included as standard in most binaries distributed by MySQL AB.