Comment by awesome_dude

Sorry, what am I missing here, this complaint is true for all architectures, because the readers are always going to be out of sync with the state in the database until they do another read.

The nanosecond that the system has the concept of readers and writers being different processes/people/whatever it has multiple copies, the one held by the database, and the copies held by the readers when they last read.

It does not matter if there is a single DB lock, or a multi shared distributed lock.