Firestore backup cost rising

[towfiq_006]

We have around 2 GB of data in Firebase, we have a cloud function (1st gen) that is triggered by a scheduler that weekly exports the data to a storage.

The problem is this incurring 256M of reads and a significant billing is coming under app engine,

What can we do to remedy this read cost?

Thanks in advance.

[tuan123]

You may want to consider using backup instead (https://firebase.google.com/docs/firestore/backups). The cost is based only on the storage size.
This thread https://www.googlecloudcommunity.com/gc/Databases/How-can-we-verify-the-firestore-scheduled-backup-a... provides great insight.