Varnish

Varnish Cache is a web application accelerator also referred to as an HTTP accelerator. You can install it in front of any web server that speaks the HTTP protocol and configure it to cache the contents. Varnish Cache is really, really fast and will improve the speed of your website. One of the key virtues of Varnish Cache is the flexibility of its domain-specific language, VCL, which allows you to define how incoming requests should be tackled.

Memcached

Memcached is a generic distributed memory caching system for boosting the load speed of dynamic database-driven websites. It is used to decrease the number of times an external data source (such as a DB or API) is read by caching data and objects in RAM. The Memcached distributed memory object caching system uses a client'server architecture. The Memcached distributed memory object caching system is employed by some of the most traffic-hungry web sites on the web and is supported by famous web applications like Joomla and WordPress.

Node.js

Node.js is a software system for building scalable Internet apps. Written in JavaScript, Node.js uses an event-based, non-blocking I/O model that makes it lightweight and effective, excellent for real-time data-rich applications. Node.js uses Google's V8 JavaScript engine, libUV, and several in-built libraries.

InnoDB

InnoDB is the default storage engine for the MySQL open-source database management system. A database engine is the principal software component that a database management system uses to create, retrieve, update and delete data from a database. The latest edition of InnoDB features serious improvements in efficacy, stability and functionality. InnoDB provides the standard ACID-compliant transaction features, as well as declarative referential integrity support. It is included by default in most binary distributions from MySQL AB.