NotificationService

A distributed, cloud-native notification microservice built using Spring Boot, Kafka, Redis, and MySQL — orchestrated with Docker Compose, monitored via Actuator/Prometheus, and integrated with AWS S3 for secure asset storage.

Supports asynchronous notifications, rate-limiting, idempotency, and cloud-based object storage integration.

📌 Features ✅ Notification API

1. Send notifications to users

2. Stores status in MySQL

3. Kafka message publishing

4. Redis-based idempotency

5. Redis-based rate limiting

✅ File Upload

1. Upload files to AWS S3

2. Pre-signed URL support

✅ Monitoring

1. Spring Boot Actuator

2. Prometheus endpoint /actuator/prometheus

3. Health checks for Redis/MySQL/Kafka

🐳 Docker Compose Setup Runs: MySQL Redis Kafka + Zookeeper Notification Service (Spring Boot)

docker compose up -d --build docker compose ps curl http://<PUBLIC_IP>:8080/actuator/health curl -X POST "http://<PUBLIC_IP>:8080/api/notify?userId=1&msg=Hello" curl "http://<PUBLIC_IP>:8080/api/notify/status?id=1" curl -X POST "http://<PUBLIC_IP>:8080/api/notify/upload" -F "file=@/path/to/file.jpg" for i in {1..70}; do curl -X POST "http://<PUBLIC_IP>:8080/api/notify?userId=1&msg=Test-$i"; echo; done