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Azure Table Storage
Cheap, fast and scalable storage
Anton Boyko
Ukrainian Azure Community Founder
Microsoft Azure MVP
[email protected]
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Our Sponsors:
AZURE STORAGE
Azure Storage
Storage in the cloud
 Scalable, durable, available
 Exposed via RESTful web services
 Only pay for what the service uses
Azure Locations
Azure Storage Abstractions
Blobs
Drives
Queues
Files
Tables
Azure Storage Redundancy
Locally redundant
• Makes multiple synchronous copies of your data
within a single datacenter
Geographically redundant
• Same as LRS, plus multiple asynchronous copies to
a second datacenter hundreds of miles away
Read-access geographically redundant
• Same as GRS, plus read access to the secondary
datacenter
Azure Storage Libraries
AZURE TABLE STORAGE
What is Azure Table Storage?
Is not
Is
 Relational Database
Management System
 No-SQL Database
Management System
 Database Management
System
 Key value storage
 Software as a service
Azure Table Storage Concept
Account
Table
Entity
FullName
FacebookUrl
Speakers
FullName
TwitterUrl
azureua
Registration
FullName
EMail
Azure Table Storage Operations
Tables
Entities
 Create
 Query
 Delete
 Insert
 Update
 Merge
 Replace
 Upsert
 Delete
 Query
Azure Table Storage Entity
 RowKey
 PartitionKey
 Binary strings
 Indexed fields
 Timestamp
 Optimistic concurrency
 Custom fields
 String, Binary, Integer,
Double, Guid, DateTime,
Bool
 There are no fixed schema
 Up-to 1MB entity
data
 Up-to 255 fields
(including RowKey,
PartitionKey,
Timestamp)
No Fixed Schema
Querying
Querying
GET /myaccount/Customers()
?$filter=(Rating ge 3) and (Rating le 6)
&$top=10
&$select=PartitionKey,RowKey,Address,CustomerSince
Operator
URI expression
Equal
eq
GreaterThan
gt
GreaterThanOrEqual
ge
LessThan
lt
LessThanOrEqual
le
NotEqual
ne
Purpose of the PartitionKey
 Entity location
Entities in the same partition will be stored together
Efficient querying and cache locality
Endeavour to include partition key in all queries
 Entity group transaction
Atomic multiple Insert/Update/Delete in same partition in a single transaction
 Table scalability
Target throughput – 500 tps/partition, 20 000 tps/account
Microsoft Azure monitors the usage patterns of partitions
Automatically load balance partitions
Each partition can be served by a different storage node
Scale to meet the traffic needs of your table
Partitions and Partition Ranges
AZURE STORAGE SECURITY
Azure Storage Security
 HTTPS
 Two 512bit symmetric keys per storage
account
 More granular security via Shared Access
Signatures
 Ad-hoc
 Policy based
Azure Table Storage SAS
 Table granularity
Can grant access to an entire table (tn) or to a table range
defined by a table (tn) along with a partition key range
(startpk/endpk) and row key range (startrk/endrk)
 Access permissions
Can grant access rights to the specified table or table range
such as Query (r), Add (a), Update (u), Delete (d) or a
combination of them
 Time range
Can limit the SAS token access time. Start time (st) is
optional but Expiry time (se) is mandatory, and no limits are
enforced on these parameters. Therefore a SAS token may
be valid for a very large time period
SAS Example
GET https://myaccount.table.core.windows.net/MyTable()
?$filter=PartitionKey eq 'Coho Winery‘
&sv=2012-02-12
&tn=MyTable
&st=2012-02-09T08:49Z
&se=2012-02-10T08:49Z
&sp=r
&spk=Coho Winery
&srk=Auburn
&epk=Coho Winery
&erk=Seattle
&sig=jDrr6cna7JPwIaxWfdH0tT5v9dc=
AZURE TABLE STORAGE
SCENARIOS
Azure Table Storage Scenarios





Application logs
Static dictionaries and/or lists
Session state
Distributed cache
Configuration storage
AZURE TABLE STORAGE
PRICING
Azure Table Storage pricing
Redundancy
Price
LRS
$0.07 per GB
GRS
$0.095 per GB
RA-GRS
$0.12 per GB
Transactions
$0.0036 per 100,000 transactions
http://azure.microsoft.com/en-us/pricing/details/storage/
Questions?
Anton Boyko
Ukrainian Azure
Community Founder
Microsoft Azure MVP
[email protected]