What is the Overriding Backbone.sync?

If you are working with Backbone, Backbone models follow traditional REST. As mentioned in the docs for Backbone. Sync () :

* Create → POST /collection

* Read → GET /collection [/id]

* Update → PUT /collection/id

* Patch → PATCH /collection/id

* Delete → DELETE /collection/id

If you need to modify what verbs and endpoints are used for methods fetch (), save (), and destroy (), you can override Backbone.sync on a per model basis to accomodate custom endpoints and HTTP verbs.