Why Firebase Firestore count reads operations while I am just adding new documents only?

Question

I have created and an API endpoint with Firebase Functions usign node.js. This API endpoint collect JSON data from client browser and I am saving that JSON data to Firebase Firestore databse using Firebase Functions.

While this works fine but when I see Firestore usage tab it's shows really high number of read operations even I have not created any read function till now.

My API is in Production and and current usage data is : Reads 9.7K, Writes 1K, Deletes 0.

I have already tried to check with Firebase Firestore Document and Pricing but never seems to find anything on this issue.

I am using Firestore add function to create document with an auto generated document id. ValidateSubscriberData() is a simple function to validate client req.body inputs which is JSON data.

app.post('/subscribe', (req, res) => {
    let subscriber = {};
    ValidateSubscriberData(req.body)
        .then(data => {
            subscriber = data;
            //console.log(data);
            subscriber.time = Date.now();
            return subscriber;
        })
        .then(subscriber => {
            //console.log(subscriber);
            // noinspection JSCheckFunctionSignatures
            return db.collection(subscriber.host).add(subscriber);
        })
        .then(document => {
            console.log(document.id);
            res.json({id: document.id, iid: subscriber.iid});
            return 0;
        })
        .catch(error => {
            console.log({SelfError: error});
            res.json(error);
        });
});

I don't know this is an issue with Firestore or I am doing something in a way that makes read operations internally but I want find a way so I can optimize my code.

English is not my first language and I am trying my best explain my issue.

@AkhilSurapuram Actually this is my bad I am not thinking about reads which I made through Firebase console so I have figured it out. Anyway thanks for helping me sir :) — Rakesh

Rakesh Rakesh · Accepted Answer · 2019-09-01T14:25:15

I think Firestore is working perfectly fine and my code too. I assume Firebase is counting those reads which I made through Firebase Console.

To verify this I have clicked on Data tab on Firestore page and scroll down to make all document name/id visible. And after that I see 1K Reads added on my old stats. So its proven Firestore counting all reads even its from firebase console and it is obvious but my bad I have not thinking about this before.

I don't think this question has any relevance but may be people like me find it helpful before posting any silly question on this helpful platform.

Why Firebase Firestore count reads operations while I am just adding new documents only?

1 Answers