Difference between revisions of "Web Application Architectures"
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Revision as of 00:52, 17 August 2014
Design Patterns
Client - Server Model
- n-tier Architecture : Each tier provides a specific functionality and interacts with adjacent tiers through well defined interfaces.
- Early web-apps were 2-tier client architectures. Server served mainly static web pages.
- 3 Tier Architecture : Most common : Presentation Tier, Application Tier, Data Tier
- App Tier divided into : Business Logic Tier, Data Access Tier (insulates from specific DB)
- Presentation Tier divided into : Client Side UI components, Server Side UI components that generate web pages.
Rails
- Rails is a Ruby gem.
- Uses a lot of code generators, automated testing scripts etc.
- Provides additinal tools such as Rake - to create/migrate databases, clear web session data etc.
- WEBrick is the web server that is bundled with Rails.
- Rails directory structure :
