Logical Unit Storage Overview

A Logical Unit (LU) is a blueprint holding a set of definitions / instructions used to create and maintain the data of a business entity like a customer.

Fabric uses the Cassandra DB as a Logical Unit's storage layer where each business entity's instance is saved as a MicroDB in an entity table (and in an entitychunks table for big LUs) under the Cassandra k2view[LUname][cluster id if exists] keyspace.

Click for more information about Cassandra keyspaces.

Storage Types

The location of a Logical Unit's permanent storage depends on the settings of the LU Schema's Storage property. There are three Storage types:

  • Default, inherits storage settings in the [fabricdb] section of the config.ini file.
  • None, does not store the instance in Cassandra after a GET retrieves instance data from the source DB.
  • Cassandra, stores instances in the Cassandra DB after the execution of the GET command.

To display an LU's storage type, use the Fabric LIST command.

Click for more information about the LIST command.

Logical Unit Storage Overview

A Logical Unit (LU) is a blueprint holding a set of definitions / instructions used to create and maintain the data of a business entity like a customer.

Fabric uses the Cassandra DB as a Logical Unit's storage layer where each business entity's instance is saved as a MicroDB in an entity table (and in an entitychunks table for big LUs) under the Cassandra k2view[LUname][cluster id if exists] keyspace.

Click for more information about Cassandra keyspaces.

Storage Types

The location of a Logical Unit's permanent storage depends on the settings of the LU Schema's Storage property. There are three Storage types:

  • Default, inherits storage settings in the [fabricdb] section of the config.ini file.
  • None, does not store the instance in Cassandra after a GET retrieves instance data from the source DB.
  • Cassandra, stores instances in the Cassandra DB after the execution of the GET command.

To display an LU's storage type, use the Fabric LIST command.

Click for more information about the LIST command.