Porting ASP.NET applications to Windows Azure
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Porting ASP.NET applications to Windows AzureGunnar PeipmanASP.NET/IIS MVP
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About me
• Name: Gunnar Peipman • Job: Chief Everything Officer• Company: Peipman Consult • Hobbies: Coding, reading,
travelling, cooking, beers, heavy metal music
• MS: ASP.NET MVP (since 2008)
• Community: ENETA• Blog: gunnarpeipman.com • E-mail:
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Agenda
• Windows Azure services• Problems with classic web applications• Think different• Sample solutions• Demo• Q&A
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Windows Azure services
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Windows Azure services
Web Sites
Virtual Machines
Mobile Services
Cloud Services SQL DB Storage
Media Services
Service Bus Cache
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Application types
• In-premises: we host everything on our servers• Cloud: everything is hosted on Windows Azure• Hybrid: mix of cloud and in-premises
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Problems in classic web applications
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Local files
• Direct use of local directories to keep files• File system support is hardcoded to application• Not proper use of temporary files• Using folders above web application root
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Local database
• Systems of developed and tested using SQL Server on development machine
• Database is located in network but not much test data is available
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In-proc and local data
• Session data is kept in server memory• Cache data is kept in server memory• Some shared data is kept in static variables
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Think different
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Change in mindset
• Your code must work in multi-server environment• There will always be network• Instead of modules there are pluggable
components• Everything can be service
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Breaking dependencies
• Most of the work you do is breaking dependencies• While breaking dependencies you make
generalizations• You move to modularized code• You make it easier to test your code
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Sample solutions
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Generalizing file storage
• Local file system: paths up to 248 chars• Blob Storage: account -> container -> blob• Other services:
o Amazono OneDriveo Google Driveo SharePoint
• Considering all those limits try to get things done
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IFileClient interface
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IFileClient interface
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ILogger interface
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ILogger interface
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Sessions and cache
• Stop using in-proc session and cache• Use SQL Server or some distributed cache
• Test for performance and monitor traffic• If needed ask session values once per request
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Demo: Hybrid applications
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Upcoming eventsUXify Bulgaria, June 7Sessions, training day and more http://uxify.org/
SQLSaturday #311 in October!http://www.sqlsaturday.com/311/
jQuery Bulgaria, November 22http://www.jquerybulgaria.com/
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