Firebase increase value without reading previous value?

Question

I\'m developing an ios application using Firebase it has huge users. I need to update particular field value in Firebase database based on user\'s response. Is there a way to in

Answer 1

From a client app, you cannot increment a value without reading it. If there are multiple writers, the last writer's value overwrites everything else.

If you want to safely increment a value when there are concurrent writers of the same value, use a transaction.