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Analytics Dashboard
A real-time analytics dashboard for visualizing business metrics, built with React and D3.js, processing millions of data points with sub-second query times.
Tech Stack
ReactD3.jsPythonFastAPIClickHouseApache KafkaDocker
Overview
A high-performance analytics dashboard designed to process and visualize millions of data points in real-time. Built for a data-driven decision making workflow with interactive charts, custom filters, and automated reporting.
Architecture
- Frontend: React with D3.js for custom, interactive visualizations
- Backend: Python FastAPI for data processing
- Database: ClickHouse for OLAP queries on large datasets
- Streaming: Apache Kafka for real-time data ingestion
- Infrastructure: Docker Compose for local development, deployed on AWS
Key Features
- Real-time data streaming and visualization
- Custom chart builder with drag-and-drop
- Automated PDF report generation
- Role-based access control
- SQL query interface for ad-hoc analysis
Lessons Learned
Performance optimization at scale requires thinking differently. Materialized views, pre-aggregation, and smart caching reduced our p99 query latency from 8 seconds to 200 milliseconds.