CAF stands for Caisses d'Allocations Familiales!
It’s a benefit to all the people/students(next section will explain who are eligible for CAF) living in France. Under CAF, France government will help you by providing a part of your rent to support your living expenses.
It’s hard to get actual information and condition for getting this benefits from the french government.
Don’t worry if you are Indian and staying here on any type of Long Stay Student VISA. you are eligible! No worries :)