Despite the existence of a great solution such as Zend Framework for its system, Magento 2.0 needs some fine tuning to get the best performance in order to provide the users with a better shopping experience. As you noted in the previous chapters, it is very important to focus on every aspect for successful e-commerce.
The following topics will be covered in this chapter:
expires headerWith a complex system architecture, Magento developers realized that a traditional development approach could be counterproductive for a scalable idea to implement an e-commerce solution.
Developers, therefore, decided to adopt the Entity-Attribute-Value (EAV) architecture approach.
This database structure embraces the Magento 2.0 complexity processes and variables and allows an unlimited numbers of attributes to any item, such as categories, products, costumers, addresses, and more.
The three main points of EAV can be described as follows:

This book is a hands–on guide to Magento, but I strongly suggest you to read more about EAV in the Magento official documentation at http://devdocs.magento.com/guides/v2.0/extension-dev-guide/attributes.html.