Windows Azure Tour

How did cloud computing evolve at first ?

Types

• Public – Available On self Service Basis

• Hybrid – Many into one• Private – For Proprietary software's

Problems which lead to the innovation

• Piracy• Software Cost• Hardware Cost• Man Power• Security Issues• Support for different Hardwares

• Who are the Major players involved in developing a cloud OS ?

Agenda

• What is Windows Azure?• Develop Your Application• Deploy To Staging and Production • Some Stuff To Think About

The Azure Platform

The Azure Platform

The “cloud” in Cloud Services?

• Think data-center somewhere on the internet

• Allows you to run your app• Allows you to read and write data

Why Azure?

• “I’ve got my awesome data-center so…”• No more worrying about…

– Buying, configuring, maintaining hardware– Buying, configuring, maintaining the operating system – Network infrastructure

• Routers, Switches, Load Balancers

– Your data-center’s power and internet connections– Failovers

• Worry less about…– App deployment– Capacity planning

• Focus on writing your app

Have a look at Data Center of Azure at the initial stage of the project

Simple Scale Out

• Changes in traffic• Need more

servers?• Need fewer

servers?

Azure: The Developer View

• Write it in Visual Studio– New project types– Debug your code

• .NET, ASP.NET, WCF, IIS7, LINQ• Azure Storage– Database in the cloud– (with a few caveats)

• Desktop development versions of– Azure Fabric– Azure Storage

Debugging In The Cloud

• We can debug a service in Visual Studio• How do you debug a service that has

been deployed?– Answer: you don’t

• Logging is the answer• RoleManager.WriteToLog(eventLogNam

e, message)– Event log name values: Error, Information,

Warning, Debug, Critical

AZURE STORAGE

Azure Storage

• Simple database in the cloud– Tables

• “structured storage”

– Blobs– Queues

• You don’t worry about replication• Scales like nobody’s business• Development version– DevelopmentStorage.exe– Uses SQL Server Express

Table Storage

• Every row has RowKey & Partition Key• RowKey = primary key• PartitionKey

– Helps you tell Azure how to scale your data– You have to think about how you’ll be querying– By State? By Hour? Other?

RowKey PartitionKey FirstName LastName

1 MA Ben Day

2 MA John Malkovich

3 WA Bill Gates

4 CA Steve Jobs

PartitionKey

• Your partitions could be on different servers• Best practice: If you know your PartitionKey,

add it to the WHERE clause• No PartitionKey in the WHERE insane table

scans• Recommendation: More partitions is (probably)

better

• Think hard about your partition key in the beginning– Else, roll your own re-partitioning

Column Data Types

• Partition key and Row key– String (up to 64KB)

• Other properties– String (up to 64KB)– Binary (up to 64KB)– Bool– DateTime – GUID– Int– Int64– Double

MORE THAN JUST ASPX

Utility Compute without a UI

• Azure uses the concept of “Roles”• There are two types of roles:–Web role–Worker role

Web & Worker

Worker Role and a Queue

• In a web role, create an ASP.NET page– Creates a queue–Writes to a queue– Gets queue depth

• Worker Role– Reads the queue– “Processes” the message

• How will the interface look like ?

DEPLOYMENT

Deploy To The Cloud

• Change the storage config to use production servers

MISCELLANEOUS

Things to think about

• No foreign keys• No triggers• No stored procedures• In Table storage, strings can only be

64k– You’ll need to use a mix of Blob and

Tables

• Think hard about what config values you put in web.config/app.config vs ServiceConfiguration.cscfg

SaaS – Software as Service

• Take a look at this !

• Final year projects• Current market ?• Landing a job in Microsoft ?• Where to find the learning

resources ?

Thank You

Gopinathan.RmFind me @

www.twitter.com/gopinathanrmgopinathanrm@student-partners.comgopee1990@gmail.comwww.fb.me/gopinathanrmwww.teknicalerror.blogspot.com

Queries