Send push notifications from Spring Boot server-side application using FCM

As you probably noticed, I familiarize myself with the subject of Firebase Cloud Messaging push notifications recently.

This time I would like to share with you my push notifications server-side application. The app is made with Spring Boot framework.

Provided example covers most common notifications sending use cases such as: sending push notification to a topic, directly to the users’ device or sending messages with additional data payload.

This post is not a step-by-step tutorial. I’ll focus on the most important parts. Fully working example is available on GitHub.

If you don’t have a client-side application to receive push notifications yet, you should consider the use of Ionic app I described earlier. Have fun!

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Send FCM push notifications with AWS Lambda function

Push notifications are back here again. In this case I’m going to send it from the clouds.

In this simple example I’ll use AWS Lambda function with API Gateway integration and Firebase Cloud Messaging service in order to send push notifications to the topic subscribers.

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Send test FCM push notification with Amazon SNS

If you’d like to test your Firebase push notifications service or you’re considering to use another push notifications service provider you should take a look at Amazon Simple Notification Service.  You can use Amazon SNS for sending example push notifications via Firebase Cloud Messaging to your mobile application.

In this short example I’ll show you how you can send a message to a specific user of your Android application. So far I couldn’t find a solution to send messages to Firebase topics subscribers but at least you don’t have to deal with OAuth tokens.

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Send your test FCM push notification with cURL

Authorization needed to send push notifications with FCM is cool and not so complicated to integrate on your server app. Take a look at documentation here.

Quicker way

Server app? Great, but sometimes you have to quickly test your FCM push notifications and not necessarily you want create a whole back-end infrastructure just to send some notifications out.

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