DevLink - Architecting Scalable Web Applications

by Clint Edmonson on Aug 17, 2009

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There is an increasing importance to architect these applications for both growth and for the optimal user experience. Modern development tools allow you to develop fantastic applications, but there are pitfalls with architecting the applications in the wrong way. This talk will discuss industry proven best practices for building highly scalable web sites and applications.

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DevLink - Architecting Scalable Web Applications — Presentation Transcript

Architecting ScalableWeb Applications
Clint Edmonson
Architect Evangelist
Microsoft
@clinted

Thank you!
Thank you for being here!
Thank you for inviting me!
Thank you for the BAS!

Architect Audience Questionnaire
Do you like bullet points?
Do you like pictures?
Do you like code?
Do you like Star Wars?

Let’s get started…

So you have a scalability problem?
Congratulations!

Scalability<>Performance

Scalabilityis how your application behaves as the number of users increases

Performance is how your application behaves for each user

CPU Utilization
Transactions /second

Cost per Request
Number of Requests

Load <>Stress

Load is how many simultaneous users your application can serve

Stress is how well your application behaves when resources become limited

Network
Database
Web server
Code
Where are the scalability limits?

Pattern: Nickel Defense

Pattern: Scale Up

PATTERN:Scale Out

PATTERN: Specialize
Web Services
Image Server
Web Application

PATTERN:Partition the application
msdn.microsoft.com
technet.microsoft.com
microsoft.com

PATTERN: Partition the database 1
Reference
Transaction

PATTERN:Partition the database 2
Read Copy
Read Copy
Write Copy

Balance the computing load

Offload the work

Distribute globally

Cache responsibly

Plan for concurrency

Anti-patterns
Blaming another department
“It works great on my machine!”
Attempting to maintain state
Spending all your time looking at the code
Caching everything (twice!)
Services calling services
especially across the network or networks

Discussion: “Scale Later”

Your Next Step
http://highscalability.com/

BONUS:
Alleged photo of an actual
Stormtrooper Conference

Stormtrooper Convention(StormLink)

Thank you!
Clint Edmonson
Architect Evangelist
clinted@microsoft.com
ttp://www.notsotrivial.net
Twitter: @clinted

DevLink - Architecting Scalable Web Applications

by Clint Edmonson on Aug 17, 2009

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DevLink - Architecting Scalable Web Applications — Presentation Transcript