US Patent 10567223 Optimistic concurrency control for managed network devices

An example network device includes a memory storing a configuration database including current configuration data having a current revision value, and one or more processors implemented in digital logic circuitry and configured to receive configuration data for the network device, the configuration data including an expected current revision value, determine an actual current revision value of current configuration data for the network device, determine whether the expected current revision value is equal to the actual current revision value, and send an error message in response to determining that the expected current revision value is not equal to the actual current revision value.