tree 9068b91e27f4bbd5f6fcc48f7542fed4edf915fe
parent 93b9cc185a674b17d3dde1bb356ea2f177b80d12
author Wendy Wang <wendy.wang10@sap.com> 1691081125 +0200
committer Wendy Wang <wendy.wang10@sap.com> 1694086555 +0200

Improve locking to handle stale locks

Locks are a mechanism to ensure exclusive usage of the locked
resource. Here we provide a Spanner-specific implementation of
locks which are used from the global-refdb module.

To ensure lock freshness we use heartbeats. Stale locks can be
reclaimed.

See Documentation/locks.md for more details.

Change-Id: Idbe3b457327d05fda2c2352bab2be27411346965