Developing and Deploying Your First Windows Azure Service

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Developing and Deploying Your First Windows Azure
Service
Risman AdnanDeveloper EvangelistMicrosoft
AHQrismana_at_microsoft.com
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What's Missing In The Cloud?An operating system
for the cloud
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Windows Azure

• The Windows Azure provides core technologies for
  building rich services on top of unreliable but
  scalable hardware (i.e., a cloud operating
  system)
• Provides features that mask common sources of
  failures to greatly simplify programming
• Supports building applications that scale
• Programming tools and interfaces are designed to
  be familiar to traditional desktop programmer
• However, introduce new concepts that are similar
  to existing ones at a different abstraction level

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Core Concept

• Desktop

• Windows Azure

• Service package
• Service configuration
• Service definition
• Service role
• Web role
• Worker role
• Internet data stores

• EXE
• Application Configuration
• Manifest
• DLL
• Windows forms library
• Windows service
• Local data stores

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Service Concepts

• Service definition
• Defines aspects of a service that cannot be
  changed without redeployment
• Types of roles and static role configuration
• Set of configuration settings for a role
• Contract with the environment code runs
• Service configurations
• Defines values for properties that can be
  dynamically updated for a running deployment
• Values of a configuration parameter
• Number of running instances

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Web Role

• Web farm that handles request from the internet
• IIS7 hosted web core
• Hosts ASP.NET
• XML based configuration of IIS7
• Integrated managed pipeline
• Supports SSL
• Windows Azure code access security policy (CAS)
  for managed code

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Worker Role

• No inbound network connections
• Can read requests from queue in storage
• Windows Azure specific CAS policy for managed
  code

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Service Runtime API

• Every role has access to APIs for common
  functionality needed for services
• Read configuration setting values
• Write messages to set of standard logging
  streams
• Printf sitting on top of a lot of plumbing so
  logs are downloadable and archived easily
• Critical messages generate live alerts
• Get access to unreliable local storage for
  caching
• Defines interface for worker role

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Windows Azure Storage Abstractions

• Blobs provide a simple interface for storing
  named files along with metadata for the file
• Tables provide structured storage. A table is
  a set of entities, which contain a set of
  properties
• Queues provide reliable storage and delivery of
  messages for an application

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In this Session

• Developing an service
• Testing and debugging locally
• Deploying to the cloud
• Maintaining a running service

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We Got Scalability For Free!
LB

• Scalability
• Availability
• Zero-downtime upgrades
• All with existing tools and skills

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Horizontal Scaling
What about state? (e.g., shopping cart)
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Separating State
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Durable Storage

• Durable, scalable, available store
• Simple abstractions
• Simple interface
• REST
• ADO.NET Data Services

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Simple Storage
LB
Storage(Blobs, Tables, Queues)
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Web And Worker Roles
LB
Simple queue interface
Storage(Blobs, Tables, Queues)
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Debugging

• Remember, no surprises
• Offline, just what you would expect
• Set breakpoints
• Step into code
• Inspect variables
• What about in the cloud?

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Logging

• Debugging the cloud really means logging
• Simple logging API today
• More functionality over time

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Publishing Your Service To The Cloud

• Write code on your laptop
• Upload your package to the web portal
• Push deploy
• Monitor, upgrade, scale

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Putting All Together
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Summary

• Familiar development
• Local debugging
• Simple deployment
• Automated management