Distributed lock manager: Difference between revisions

Revision as of 08:45, 22 August 2018

Revision as of 11:42, 5 May 2019

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===Resources===

Thee DLM uses a generalized concept of a '''resource''', which is some entity to which shared access must be controlled. This can relate to a file, a record, an area of shared memory, or anything else that the [[application software|application]] designer chooses. A hierarchy of resources may be defined, so that a number of levels of locking can be implemented. For instance, a hypothetical [[database]] might define a resource hierarchy as follows:

The DLM uses a generalized concept of a '''resource''', which is some entity to which shared access must be controlled. This can relate to a file, a record, an area of shared memory, or anything else that the [[application software|application]] designer chooses. A hierarchy of resources may be defined, so that a number of levels of locking can be implemented. For instance, a hypothetical [[database]] might define a resource hierarchy as follows:

* Database

* Table