What is Mean By Ruby on Rails

   it's a two part one is"Ruby" and another one is "Rails"

Ruby:

•   it's a object Oriented programming language
• created in 1995 'YUKIHIRO MATSUMUTO' ('matz')
• used for many purpose, not just web applications

 Rails:

• open source, web application framework
• written in Ruby
• created in 2003 by 'DAVID HEINEMIER HANSSON' ('DHH')
• created as foundation of 37 signals Basecamp and then released as open source in 2004

Framework:

    a set of code Libraries [control the program] and Data structures that provide generic functionality

Why Use Ruby on Rails:

      object oriented, easily readable, unsurprising Syntax and behavior

Dry Code:

Donot repeat yourself, consistent code that is easily to maintain

Convention Over Configuration:

• sensible default, only specify unconventional aspects

• speeds development, less code to maintain follows best practice(optional)

Webserver:

• Apache 1 or 2
• passenger |mod_rails |
• Nginx (Engine X")
• Lighttp ("Lighty")
• Mongral
• webrick