· Block Id -- 64 Bytes Per Block
· PutBlob -- 64 MB Total
· Blob MetaData -- 8 KB Per Blob
· Container MetaData -- 8 KB Per Container
· PutBlock / PutBlockList 50 GB Each
· If you use Blocks then upto 4 MB of Each Block
Container Name:
· Valid DNS Name
· All Lowercase
· 3 to 63 Characters
· Starts With Letter or Number
· Letters, Numbers, and Dash (-)
· Every Dash (-) Must Be Immediately Preceded and Followed by a Letter or Number
Blob Name:
· 1,024 Characters Max
· Any combination of characters, but reserved URL characters must be properly escaped
· Specify a delimiter within a blob name to create a virtual hierarchy though blob storage is flat and not a hierarchical
2: Tables -
Table Name:
· Only Alphanumeric Characters
· Case-Insensitive
· 3 to 63 Characters
· May Not Begin With a Numeric Character
· Up to 255 Entity Properties (including PartitionKey, RowKey, and Timestamp)
· 1 MB Max for Combined Size of All Data in an Entity's Properties
Property Name:
· Case-Sensitive
· 255 Characters Max
· Only Alphanumeric Characters and '_'
· Can't begin With a Number
· '/,\,#,?' characters are not allowed in values for the PartitionKey and RowKey properties.
· Only a total of 256 characters can be specified for the partition key and row key together on the URL.
· With version 2009-04-14, the Table service no longer supports including the dash (-) character in property names.
3: Queues -
Messages:
· 8 KB Max(It converts Messages in base 64 then stores that message in cloud.)
· Messages pushed to end of queue and popped from front of queue (FIFO)
· Unlimited number of messages
Queue Name:
· Valid DNS name
· All Lowercase
· 3 to 63 Characters -
· Start With a Letter or Number
· Letters, Numbers, and Dash (-)
· First and Last Letters Must be Alphanumeric
· Dash (-) character may not be the first or last letter
4: All Storage Timeouts
Following are the maximum timeouts allowed for Windows Azure Storage operations:
· GetBlob – A get bob request is allowed to take up to 2 minutes per MByte transferred, before the server side times out.
· PutBlob – A put bob request is allowed to take up to 10 minutes per MByte transferred, before the server side times out.
· PutBlockList and GetBlockList – These have a max timeout of 60 seconds.
· Table Query and All List Operations – Current max timeout is 60 seconds. In the future this will be changed to 30 seconds.
· All other commands in Blobs, Tables and Queues have a max timeout of 30 seconds.
[Upadate-August-2009] The max timeout is now 30 seconds for listing Blobs, Blob Containers and Queues and for performing Table Queries.
5: Maximum Items Per Request-
· Can return upto 1000 Tables per request.
· Can return upto 1000 Entites of a Tanle per request.
· Can return upto 5000 Queues per request.
· Can return upto 5000 Containers per request.
· Can return upto 5000 Blobs per request.
