CODEWITHSUNDEEP
push-notificationfirebase-cloud-messaging
Mohamed Nasser
Mohamed Nasser

Reputation: 1

Does FCM have any limitations on the number of free in-app/push notifications? Can it handle 21M+ notifications/month for 7M users?

I am building a mobile application with a large user base (7 million subscribers). The app needs to send a high volume of in-app and push notifications (over 21 million per month). I'm considering using Firebase Cloud Messaging (FCM) to handle this.

My main questions are:

Free Tier Limitations: Does FCM have any restrictions on the number of notifications that can be sent for free? Are there daily or monthly limits I should be aware of? Scalability: Can FCM reliably handle sending over 21 million notifications per month to 7 million users? Are there any performance or cost considerations I should take into account when scaling to this volume?

Upvotes: 0

Views: 1326

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 598603

firebaser here

Firebase Cloud Messaging sends between 15 and 20 million messages per second, so the volume you're describing is not a problem for the service.

The only documented limitation is around the quota of messages you can send per minute. From :

When sending messages against the FCM HTTP v1 API, each request consumes an allotted Quota Token in a given time window. This window, called a "Token Bucket", refills to full at the end of the time window. For example: the HTTP v1 API allots 600K Quota Tokens for each 1-minute Token Bucket, which refills to full at the end of each 1-minute window.

So you can send 600K messages per minute, but I recommend reading out the entire page to learn the full details.

Upvotes: 2

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