An aws lambda that does periodic backups of firebase database to S3 as a json file.
Setup a lambda in aws console with env variables:
S3_REGION
S3_BUCKET
FIREBASE_URL
FIREBASE_TOKEN
FIREBASE_TOKEN is setup by default to be encrypted using KMS.
You can setup a aws cloudwatch rule to run this lambda on a schedule.
You can upload the code manually or use the provided make file to build a zip and upload.
npm run deploy for example (you need specify your lambda function name).