Decoupled web applications (with AppFabric)
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Web applications are growing increasinly more complex, and to speed up development, it makes sense to use pipelined development. This is one of the benefits afforded to the development team using decoupling as an architecture best practice. This deck contains a quick overview of decoupled apps, and how we can use AppFabric to handle decoupling.
Transcript of Decoupled web applications (with AppFabric)
Who am I?
• Software Architect @ Studio Pešec
• 10+ years of experience (C#, Java...)
• Highly scalable, distributed applications
• Microsoft Certified Technology Specialist
• http://www.linkedin.com/in/avodovnik
• @avodovnik
• http://lab.studiopesec.com
Agenda
• Coupled vs. Decoupled
• AppFabric
• When and where
• Discussion & QA
Coupled vs. Decoupled
Database DAL Business
Logic UI
Coupled vs. Decoupled
UI Business
Logic DAL Database
How to communicate through boundaries?
• We know that already: interfaces
• To exchange information we define contracts
• Implementation changes
Benefits of decoupling
• Pipelined development
• Different languages/technologies
• Different timelines
• Change agnostic!
Scalability
DB (SQL Server,
MySQL, NoSQL)
Browser
Web Server (ASP.NET, PHP,
Ruby, …)
Decoupling!
Browser
Web Server (ASP.NET, PHP,
Ruby, …)
Sessions
ARE SCALABLE (DISTRIBUTED) APPS REALLY *THIS* EASY?
BUT WAIT A MOMENT
Browser
DB (SQL Server,
MySQL, NoSQL)
Web Server (ASP.NET, PHP,
Ruby, …)
Sessions
Apps
Services (WCF, WF, …)
Sessions / State
LOB
Systems
AuthN/Z
AuthN/Z
Introducing AppFabric
Windows Azure AppFabric
Management Management Management Management Management
Prog. Models
& Tools
Prog. Models
& Tools
Prog. Models
& Tools
Prog. Models
& Tools Prog. Models
& Tools
TAX RETURN SUBMISSION APPLICATION
EXAMPLE
High-level architecture
Scalability, revisited
• Time-based load, e.g. Tax-return submission
AppFabric Queues & Topics
• Load Leveling
• Loose coupling (no consumer?)
• Load balancing
Queue P C
P
P C
C
AppFabric Queues & Topics
• Microsoft‘s Publish/Subscribe
Topic P S
S
S
C
C
C
Why?
What‘s better?
When & where?
• Potentially scalable application
• Different technologies
• Separate development teams
– Different paces of development
– Different release cadence
• Load leveling & balancing
