Limitations of Table Storage

There are some limitations to using Table Storage. To start with, each entity can have a maximum size of 1 MB. The PartitionKey and RowKey are limited to string data type, and have a maximum size of 1 KB each; however, when accessing entities via REST, there is a practical limit on the length of the PartitionKey and RowKey. This stems from a limitation in HTTP.SYS, the "listener" for web requests, and the HTTP/1.1 protocol, which limits URI length to 260 characters. This is not the entire URL, merely the parameter portion of the URL. Given the following example URL, the portion in bold cannot be longer than 260 characters:

http://<account>.table.core.windows.net/<tablename>(PartitionKey="keyvalue",RowKey="keyvalue")

There are a maximum number of 255 properties per entity – 252 user-defined properties and three fixed properties (PartitionKey, RowKey, and Timestamp). Property names can be repeated from entity to entity, but a property name must...