Athar is a self-hosted, high-performance Telemetry & Push Notification Engine built for absolute scalability and sub-ms ingestion latency. It's a production-grade open-source alternative to expensive third-party services, giving you 100% control over data and privacy.
Built with an event-driven architecture: NestJS, Kafka (event buffer), ClickHouse (OLAP DB for fast aggregations), and Redis/BullMQ.
Spin it up with one command: `docker compose up` 🐋
