Book Image

Microsoft Windows Azure Development Cookbook

By : Neil Mackenzie
Book Image

Microsoft Windows Azure Development Cookbook

By: Neil Mackenzie

Overview of this book

The Windows Azure platform is Microsoft's Platform-as-a-Service environment for hosting services and data in the cloud. It provides developers with on-demand computing, storage, and service connectivity capabilities that facilitate the hosting of highly scalable services in Windows Azure datacenters across the globe. This practical cookbook will show you advanced development techniques for building highly scalable cloud-based services using the Windows Azure platform. It contains over 80 practical, task-based, and immediately usable recipes covering a wide range of advanced development techniques for building highly scalable services to solve particular problems/scenarios when developing these services on the Windows Azure platform. Packed with reusable, real-world recipes, the book starts by explaining the various access control mechanisms used in the Windows Azure platform. Next you will see the advanced features of Windows Azure Blob storage, Windows Azure Table storage, and Windows Azure Queues. The book then dives deep into topics such as developing Windows Azure hosted services, using Windows Azure Diagnostics, managing hosted services with the Service Management API, using SQL Azure and the Windows Azure AppFabric Service Bus. You will see how to use several of the latest features such as VM roles, Windows Azure Connect, startup tasks, and the Windows Azure AppFabric Caching Service.
Table of Contents (16 chapters)
Microsoft Windows Azure Development Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Using the Windows Azure Content-Delivery Network (CDN)


The Windows Azure Blob Service is hosted in a small number of Windows Azure datacenters worldwide. The Windows Azure Content-Delivery Network (CDN) is a service that enhances end user experience by caching blobs in more than 20 strategic locations across the World.

After the CDN is enabled for a storage account, a CDN endpoint can be used, instead of the storage-account endpoint, to access a cached version of publicly accessible blobs in the storage account. The CDN endpoint is location aware, and a request to the CDN endpoint is directed automatically to the closest CDN location. If the blob is not currently cached there, then the CDN retrieves the blob from the Blob service endpoint and caches it before satisfying the request.

The cache-control property of the blob can be used to specify a time-to-live in the cache. Otherwise, the CDN uses a heuristic based on how old the blob is and caches the blob, for the shorter of 72 hours or 20...