06/Backend / REST API•2024
Mobile App Backend
Cloud microservice backend serving 100K+ mobile active users
100K+ MAUActive Users
99.9%Push Delivery
99.95%API Availability
Backend / REST API
Mobile App Backend
Scalable backend for cross-platform mobile app with push notifications, social auth, and analytics.
Node.jsExpressMongoDBAWSDockerREST APIFirebase
/01 Project Overview
A robust cloud backend powering native mobile applications on iOS and Android. Features social authentication, push notification orchestration, optimized media upload pipelines to AWS S3, and real-time activity feeds.
/02 The Challenge
Handling sudden bursts of user activity following viral push notification campaigns without degrading database connection pools or API responsiveness.
/03 The Solution
Decoupled push notification delivery using AWS SQS queues and asynchronous workers, indexed MongoDB collections with Redis caching, and deployed Docker container clusters on AWS.
Engineering Highlights
- ✓Elastic architecture supporting 100K+ monthly active users
- ✓High-throughput push notification queue with 99.9% delivery rate
- ✓Secure S3 pre-signed upload URLs with automatic media compression
- ✓Centralized logging, APM metrics, and automated alerts