Stale attribute overwrite during concurrent Backbone.Model.save calls

When utilizing Backbone.Model.save to synchronize local state with a remote server, the model attributes are updated based on the server's response. In environments with high latency or rapid successive updates, a race condition occurs when multiple asynchronous requests are in flight simultaneously.

Because Backbone.js does not implement a built-in request queue or version tracking for model synchronization, a slower response from an earlier request may arrive after a faster response from a more recent request. This results in the local model being reverted to a stale state, effectively causing a "lost update" of the most recent data.

• How can the model be configured to ignore server responses that correspond to outdated request sequences?
• Is there a documented mechanism within the Backbone.Model prototype to ensure that only the most recent save operation determines the final attribute state?