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![Windows Azure Storage
Blob
Concept
<configuration>
<appSettings>
<add key="StorageConnectionString"
value="DefaultEndpointsProtocol=https;AccountName=[
AccountName];AccountKey=[AccountKey]" />
</appSettings>
</configuration>](https://image.slidesharecdn.com/acompleteguidetoazurestorage-150812073447-lva1-app6891/85/A-complete-guide-to-azure-storage-9-320.jpg)
Uploaded byHimanshu Sahu
A complete guide to azure storage
This document provides an overview of Windows Azure Storage, which includes scalable cloud storage services for blobs, tables, and queues. It describes the key concepts and abstractions for each service, including storage accounts, containers/tables/queues, and blobs/entities/messages. Common uses cases are also outlined, such as storing files, serving images, caching, and asynchronous processing.
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A complete guide to azure storage
- 1. A complete Guideto Windows Azure Storage Himanshu Sahu Mindfire Solution himanshus@mindfiresolutions.com
- 2. Windows Azure Storage WindowsAzure Storage (WAS) is a scalable cloud storage system that has been in production since November 2008. It is used inside Microsoft for applications such as social networking search, serving video, music and game content, managing medical records, and more.
- 3. Windows Azure Storage CloudStorage – Anywhere and anytime Access Durable and higly Available Massively Scalable – Easily Build “internet-scale” application Pay for what you use Exlopsed via REST API and easy to use client libraries in .NET, JAVA, Node.js, etc
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- 5. Windows Azure Storage Blob SimpleInterface to store and retrieve large amount of unstructured data like files, images, videos, etc A single blob can be hundreds of gigabytes in size, and a single storage account can contain up to 200TB of blobs if it was created on June 8th, 2012, or later and storage accounts created prior to that date can contain up to 100TB of blobs.
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- 7. Windows Azure Storage Blob Concept StorageAccount – All access to Windows Azure Storage is done through a storage account. This is the highest level of the namespace for accessing blobs An account can have many Blob Containers Blob Container – A container provides a grouping of a set of blobs. The container name is scoped by the account. Sharing policies are set at the container level, where a container can be set to private or to be publicly accessible. The ability to list all of the blobs within the container is also provided.
- 8. Windows Azure Storage Blob Concept Blob– Blobs are stored in and scoped by Blob Containers. Blobs can have meta data associated with them, which are <name, value> pairs, and they are up to 8KB in size per blob. The blob metadata can be set and retrieved separately from the blob data bits. URL format- Blobs are addressable using the following URL format: http://<storageaccount>.blob.core.windows.net/<container>/< blob>
- 9. Windows Azure Storage Blob Concept <configuration> <appSettings> <addkey="StorageConnectionString" value="DefaultEndpointsProtocol=https;AccountName=[ AccountName];AccountKey=[AccountKey]" /> </appSettings> </configuration>
- 10. Windows Azure Storage Blob Commonuses of Blob storage: Serving images or documents directly to a browser Storing files for distributed access Streaming video and audio Performing secure backup and disaster recovery Storing data for analysis by an on-premises or Windows Azure-hosted service
- 11. Windows Azure Storage Blob PracticalScenarios where we use Blobs: Enterprise document store, logs, etc. Social sharing like photos, videos, blogs. Backups – file, database, devices, computer, etc.
- 12. Windows Azure Storage Table NoSQLdatastore which accepts authenticated calls from inside and outside the Windows Azure cloud. Used for storing structured, non-relational data.
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- 14. Windows Azure Storage Table Concept StorageAccount – All access to Windows Azure Storage is done through a storage account. This is the highest level of the namespace for accessing tables An account can have many Tables Table – contains a set of entities. Table names are scoped by the account. An application may create many tables within a storage account.
- 15. Windows Azure Storage Table Concept Entity(Row) – Entities (an entity is analogous to a "row") are the basic data items stored in a table. An entity contains a set of properties. Each table has two properties, “PartitionKey and RowKey”, which form the unique key for the entity. Combined size of all of the properties in an entity cannot exceed 1MB. This size includes the size of the property names as well as the size of the property values or their types.
- 16. Windows Azure Storage Table Concept Property(Column) – A property is a name-value pair. This represents a single value in an entity. Property names are case sensitive. An entity can hold up to 255 properties. Each entity also has 3 system properties that specify a partition key, a row key, and a timestamp.
- 17. Windows Azure Storage Table Concept PartitionKey– The first key property of every table. The system uses this key to automatically distribute and load balance the table’s entities over many servers. RowKey – A second key property for the table. This is the unique ID of the entity within the partition it belongs to. The PartitionKey combined with the RowKey uniquely identifies an entity in a table. Timestamp – Every entity has a version maintained by the system. This is used for optimistic concurrency.
- 18. Windows Azure Storage Table Commonuses of Table storage: Storing TBs of structured data capable of serving web scale applications Storing datasets that don't require complex joins, foreign keys, or stored procedures and can be denormalized for fast access Quickly querying data using a clustered index
- 19. Windows Azure Storage Queue Scalable,reliable and persistent messaging system that enables building work flow application or decouple components.
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- 21. Windows Azure Storage Queue Concept StorageAccount – All access to Windows Azure Storage is done through a storage account. This is the highest level of the namespace for accessing queues An account can have many Queues
- 22. Windows Azure Storage Queue Concept Queue– A queue contains many messages. The queue name is scoped by the account. There is no limit on the number of messages stored in a queue (the only limit is the 200TB size limit on the storage account). A message is stored for at most a week. The system will garbage collect the messages that are more than a week old. Queues can have metadata associated with them. Metadata is in the form of <name, value> pairs, and they are up to 8KB in size per queue.
- 23. Windows Azure Storage Queue Concept Messages– Messages are stored in queues. Each message can be up to 8KB in size. To store larger data, one can store the data in Azure Blob store or Azure Table store, and then store the blob/entity name in the message. Note that when you put a message into the store, the message data can be binary. But when you get the messages back from the store, the response is in XML format, and the message data is returned as base64 encoded.
- 24. Windows Azure Storage Queue Concept WhereAzure Queues differ from traditional queue implementations is that it is not a FIFO container. This means, the message will remain in the queue until explicitly deleted. If a message is read by one process, it will be marked as invisible to other processes for a variable time period, which defaults to 30 seconds, and can be no more than 2 hours; if the message hasn't been deleted by then, it will be returned to the queue and will be available for processing again. Because of this behavior, there is also no guarantee that messages will be in any particular order.
- 25. Windows Azure Storage Queue Concept Messages– Messages are stored in queues. Each message can be up to 8KB in size. To store larger data, one can store the data in Azure Blob store or Azure Table store, and then store the blob/entity name in the message. Note that when you put a message into the store, the message data can be binary. But when you get the messages back from the store, the response is in XML format, and the message data is returned as base64 encoded.
- 26. Windows Azure Storage Queue Commonuses of Queue storage: Creating a backlog of work to process asynchronously Inter-Role Communication Process/Work Flow
- 27. Windows Azure Storage WindowsAzure Storage Scalability and Performance Targe
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