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WINDOWS AZURE STORAGE
11 de Mayo, 2011
Gisela Torres – Windows Azure MVPAventia-Renacimientowww.returngis.netE-mail: [email protected]: http://www.twitter.com/0gis0
WINDOWS AZURE STORAGE
SERVICES
Storage
DURABLE STORAGE, AT MASSIVE SCALE
Slide 4
Blob- Massive files e.g. videos, logs
Drive- Use standard file system APIs
Tables- Non-relational, but with few scale limits- Use SQL Azure for relational data
Queues- Facilitate loosely-coupled, reliable, systems
BLOB
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Binary Large OBject
BLOBS
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Store Large Objects (up to 1TB in size)
Can be served through Windows Azure CDN service
Standard REST Interface
PutBlob
Inserts a new blob, overwrites the existing blob
GetBlob
Get whole blob or a specific range
DeleteBlob
CopyBlob
SnapshotBlob
Etc
BLOB STRUCTURE
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Storage Account: MediaStorage
Container: Pop Container: Rock
Fly.mp3
PopConcert.avi
PopLetter.docx
We will rock you.mp3
RockConcert.avi
poster.pdf
BLOB URI
http://<storageAccount>.blob.core.windows.net/<Container>/<BlobName>
http://mediastorage.blob.core.windows.net/pop/fly.mp3
BASIC STEPS
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Get storage account
Get blob client
Retrieve a container reference
Get blob reference
Upload/Download a blob
DEMO BLOB STORAGE
TWO TYPES OF BLOBS
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Block Blob
Targeted at streaming workloads
Each blob consists of a sequence of blocks• Each block is identified
by a Block ID
Size limit 200GB per blob
Page Blob
Targeted at random read/write workloads
Each blob consists of an arrayof pages
Each page is identified byits offset from the start ofthe blob
Size limit 1TB per blob
WINDOWS AZURE DRIVE
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Drive == Page blob
Fixed NTFS
Between 16MB and 1TB
Can only be mounted by only VM
at time for read/write access
TABLE
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Provides Structured Storage
Massively Scalable TablesBillions of entities (rows) and
TBs of data
Can use thousands of servers as traffic grows
Highly Available & DurableData is replicated several times
Familiar and Easy to use API
WCF Data Services(previously ADO.NET Data Services)and OData
.NET classes and LINQ
REST – with any platform or language
BASIC STEPS
Create an entity
Specify a context
Get storage account
Generate table
Work with the context
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DEMO TABLE STORAGE
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PARTITION TABLES
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QUEUE
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• Queue are performance efficient,highly available and provide reliable message delivery
– Simple, asynchronous work dispatch
– Programming semantics ensure that a message can be processed at least once
• Access is provided via REST
QUEUE: FIRST IN FIRST OUT
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BASIC STEPS
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Get storage account
Retrieve queue reference
Add/Get message
Delete message
DEMO QUEUES
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CONTENT DELIVERY NETWORK
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