This repository contains the backend infrastructure and real-time event indexing architecture for a scalable Web3 ecosystem. It demonstrates how to bridge on-chain smart contract events with high-performance off-chain data processing and RESTful APIs using Node.js.
- Runtime Environment: Node.js for high-throughput, non-blocking I/O operations.
- API Architecture: RESTful endpoints built to serve the frontend dApp seamlessly.
- Web3 Integration: Ethers.js / Web3.js for continuous blockchain synchronization and event listening.
- Database Readiness: Architected to integrate with PostgreSQL/MongoDB for robust data persistence.
- Event Listeners: Implements continuous polling and WebSocket connections to listen for critical smart contract events (e.g.,
TokensStaked,PresalePurchased). - Data Aggregation: Parses raw blockchain hexadecimal data into human-readable, structured JSON formats before database insertion.
- Optimized Endpoints: Cleanly separated API routes handling off-chain metrics, user balances, and historical transaction data.
- Rate Limiting & Security: Structured to prevent abuse and RPC node rate-limiting through strategic caching and request throttling.
- RPC Fallbacks: Designed to handle RPC node failures gracefully by failing over to backup endpoints.
- Transaction Status Tracking: Monitors pending transactions to provide the frontend with accurate, real-time feedback.
# Install Node.js dependencies
npm install
# Start the event indexer server
npm run start:indexer
# Start the API server in development mode
npm run dev:api
Note: As a Senior Architect, a significant portion of my enterprise-grade backend infrastructure resides in private, NDA-bound repositories. This repository serves as a public demonstration of my Node.js architecture, API design, and Web3 data synchronization patterns.