Provides tools for managing hierarchically related key subspaces. Directories are a recommended approach for administering applications. Each application should create or open at least one directory to manage its subspaces.

Directories are identified by hierarchical paths analogous to the paths in a Unix-like file system. A path is represented as a tuple of strings. Each directory has an associated subspace used to store its content. The directory layer maps each path to a short prefix used for the corresponding subspace. In effect, directories provide a level of indirection for access to subspaces.

See general directory documentation for information about how directories work and interact with other parts of the built-in keyspace management features.