push notification to 50 thousand device.

How to / Third Party Tooling
1

Dear All,

Our app is an expo app used by 50,000 users. We send notification to all users many times a day. I have read the documentation and figure out that i can send only to 100 device a time. Using this approach, it will force me to send 500 post request to expo server in order to send notification to all devices.

I am looking for a way to send notification to all user with less request to expo server.

Thank You

2

This isn’t possible.

From your server you will need to batch requests 100 at a time. If you use expo-server-sdk this will be handled for you.

There are also community supported versions of the Expo Server SDK for other backend languages:

From the expo-server-sdk docs:

// The Expo push notification service accepts batches of notifications so
// that you don't need to send 1000 requests to send 1000 notifications. We
// recommend you batch your notifications to reduce the number of requests
// and to compress them (notifications with similar content will get
// compressed).
let chunks = expo.chunkPushNotifications(messages);
let tickets = [];
(async () => {
  // Send the chunks to the Expo push notification service. There are
  // different strategies you could use. A simple one is to send one chunk at a
  // time, which nicely spreads the load out over time:
  for (let chunk of chunks) {
    try {
      let ticketChunk = await expo.sendPushNotificationsAsync(chunk);
      console.log(ticketChunk);
      tickets.push(...ticketChunk);
      // NOTE: If a ticket contains an error code in ticket.details.error, you
      // must handle it appropriately. The error codes are listed in the Expo
      // documentation:
      // https://docs.expo.io/versions/latest/guides/push-notifications#response-format
    } catch (error) {
      console.error(error);
    }
  }
})();