Hepsia Advanced Features
The Advanced tab provides you with quick access to a set of advanced features, among them the Memcached distributed memory object caching system and the Varnish Cache web accelerator, which will help you optimize your sites and applications without needing to log out of the web hosting Control Panel. Depending on the hosting package, these tools are either included by default or are offered in the form of easy-to-get upgrades. InnoDB and NodeJS support is offered as well.

Varnish
Varnish Cache is a web accelerator also called as an HTTP accelerator. You can install it in front of any server that speaks HTTP and configure it to cache the content. Varnish Cache is really, really fast and will boost your site's loading speed. One of the important strengths of Varnish Cache is the flexibility of its domain-specific language, VCL, which allows you to determine how incoming requests should be handled.

Memcached
Memcached is a general-purpose memory caching system for increasing the loading speed of dynamic database-powered websites. It is used to lower 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 memory caching system uses a two-tier architecture. The Memcached memory object caching system is employed by some of the most traffic-hungry web sites on the World Wide Web and is supported by famous Content Management Systems like Joomla and WordPress.

Node.js
Node.js is a software platform for writing scalable Internet apps. Written in JavaScript, Node.js uses an event-driven, asynchronous input/output model that makes it lightweight and efficient, ideal for high-performance data-rich network apps. Node.js uses Google's V8 JavaScript engine, libUV, and several built-in libraries.
InnoDB
InnoDB is the default storage engine for the MySQL open-source RDBMS. A storage engine is the underlying software component that a DBMS uses to create, retrieve, update and delete data from a database. The latest edition of InnoDB features substantial improvements in performance, security and functionality. InnoDB provides the standard ACID transaction features, as well as declarative referential integrity support. It is included by default in most binaries distributed by MySQL AB.