# Distributed Lock Manager

- ## The Distributed Lock Manager (DLM) subsystem provides an API that allows applications to synchronize activities cluster-wide

  - This means that a process on onenode can coordinate with a processon another node to ensure coherentaccess to any resource in the cluster

- ## Use the lock manager tosynchronize your application’saccess to resources on a single node today…

- ## …deploy it, without modification, on a cluster tomorrow!

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