Scaling Out .NET

Scaling Out .NET
Scale Out your .NET applications by leveraging
IIS7, AppFabric, Web Farm Framework, and Web Deploy
Brian Ritchie
Chief ArchitectPayformance Corporation
Email: brian.ritchie@gmail.com
Blog: http://weblog.asp.net/britchie
Web: http://www.dotnetpowered.com

Who am I?
Brian Ritchie
Chief Architect at Payformance Corporation
Nearly 20 years of development experience
Developing on .NET since 1.0 Beta 1
Contributed to Mono and other open source projects

Reasons to scale out
Increases Reliability
Increases Performance
Provides Elastic Scalability

So why isn’t everyone doing it?

Scale Out Challenges
Design Considerations
Management Complexities
Maintenance Challenges

Components of a scaled out architecture
Load Balancing
Network Load Balancing
Queued Processing
Workflow Distribution
Distributed Caching

Increase Reliability & PerformanceLoad Balancing
Use load balancing to spread work across multiple machines
Building out instead of building up uses lower cost resources
Elastic scaling for extra capacity
Prevent single point of failure

Network Load Balancing
NLB: Network Load Balancer
ARR: Application Request Routing
F5 BigIP Local Traffic Manager
Increase Reliability & PerformanceLoad Balancing Options

Workflow Distribution
Windows Server AppFabric

Queued Processing
Pick a queue: MSMQ, SQL Service Broker, SQL Table, etc.
Process it with a multi-threaded Always-On Services
Queue
Workers
Enqueue

Effects of Queued Processing

Increase Reliability & PerformanceCaching
Using caching to decrease load on centralized database resources
Load balanced web servers required shared session

Increase Reliability & PerformanceDistribute Your Cache
A Distributed Cache has these benefits:
In-Memory for Performance
Replicated for Reliability
ASP.NET providers for easy integration
Doesn’t add a single point of failure
Options
Windows Server AppFabric Cache (“Velocity”)
MemCached

Management & MaintenanceChallenges
A scaled out infrastructure presents its own set of challenges:
How do I provision resources easily?
Do I need to manage each machine individually?
How do I deploy application updates?
How do I automate the manual tasks?

The Solution…

Management & Maintenance Solutions:Application Platform
IIS7+AppFabric: Application Platform
Unified application platform: web sites, web services, always-on services
Move your Windows Services to IIS7 with AppFabric to improve management & deployment

Management & Maintenance Solutions:Deployment Automation
Web Deploy 2.1
Combines all build resources into one package and makes deploying applications to the host server easy
Components
Command-line tools
Server-side service
MSBuild packaging support
Visual Studio configuration integration

Management & Maintenance Solutions:Deployment Automation
Web Deploy 2.1
Deploy
Package
Build/Deploy Server
Build Server
(using MSBuild)
Deployment
Package
IIS
Server
IIS MMC – Export Application
IIS MMC – Import Application

Management & MaintenanceSolutions
Web Farm Framework 2.0
Centralized farm management
Easily provision resources
Distribute updates across the farm
Ease maintenance with rolling upgrades & automatic load balancer control
Extensible: Plug-ins for managing 3rd party load balancers

Management & MaintenanceSolutions
synchronize
deploy
control
control
Primary

Management & Maintenance Solutions: Monitoring via AppFabric
Windows Server AppFabric Dashboard

Putting it all togetherwith a sample web farm
DEMO
Hardware load balancerBigIP F5
Web Farm
ASP.NET Web Application
IIS7
Windows Server AppFabric
ASP.NET AppFabric Session Provider
Web Deploy
Deployer
Web Deploy
Cache Cluster
AppFabric Cache Service

Management & Maintenance Solutions: Monitoring via Operations Manager
System Center Operations Manager with Windows Server AppFabric Management Pack
AppFabric Event Collection service
AppFabric Workflow Management service
AppFabric Caching Service
AppFabric SQL monitoring databases
AppFabric SQL Workflow Instance Stores
AppFabric database connections
IIS Hosted WCF and WF services

Management & Maintenance Solutions: Task Automation
Automate using:
Automation tools cover:
AppFabric
IIS7
Web Farm Farmwork
Powershell
API

Questions?

Web Farm Framework
Web Farm Frameworkhttp://www.iis.net/download/WebFarmFramework
Scott Gu’s Introduce to WFF 2.0http://weblogs.asp.net/scottgu/archive/2010/09/08/introducing-the-microsoft-web-farm-framework.aspx
WFF Documentation (including API & Powershell)http://learn.iis.net/page.aspx/905/microsoft-web-farm-framework-20-for-iis-7/
Windows AppFabric
AppFabric Architecture Guidehttp://blogs.msdn.com/b/yasserabdelkader/archive/2010/09/12/release-of-windows-server-appfabric-architecture-guide.aspx
AppFabric Management Pack for Op Mgr 2007http://blogs.technet.com/b/appfabric/archive/2010/06/14/appfabric-management-pack-available-for-operations-manager-2007.aspx
AppFabric Presentationhttp://rstonkus.wordpress.com/2010/10/28/partner-conference-windows-server-appfabric/
Other
Memcached ASP.NET Providershttp://memcachedproviders.codeplex.com/
SQL Table Queueshttp://www.mssqltips.com/tip.asp?tip=1257
Azure Scalability using Queueshttp://www.cloudbook.net/resources/stories/-azure-scalability--use-queues-as-your-bridges
Web Deploy Team Bloghttp://blogs.iis.net/msdeploy/default.aspx
Application Request Routinghttp://www.iis.net/download/ApplicationRequestRoutinghttp://learn.iis.net/page.aspx/486/http-load-balancing-using-application-request-routing/http://blogs.iis.net/mailant/archive/2010/03/25/how-iis-application-request-routing-arr-powers-elastic-scale-for-maximumasp.aspx
Learn More

Scaling Out .NET

by Brian Ritchie on Aug 27, 2011

Accessibility

Categories

Tags

Upload Details

Usage Rights

1 Embed 1

Statistics

Scaling Out .NET — Presentation Transcript