You kind of miss the part where he says "Usually implemented transparently for the data layer API clients." Transparently as in no work, no boilerplate. I gues

You kind of miss the part where he says "Usually implemented transparently for the data layer API clients." Transparently as in no work, no boilerplate. I guess your mileage might vary, but Java has JPA/Hibernate, and .NET has Entity Framework, and they both make it easy, so I'm going to be surprised if any major framework or language doesn't make this easy. The concept is also called optimistic locking, if that makes Googling it easier. Using that term, I easily found that Node.js's Sequelize supports it too https://sequelize.org/v5/manual/models-definition.html#optimistic-locking https://sequelize.org/v5/manual/models-definition.html#optim...