Backend Software Engineer with hands-on experience building scalable systems and real-time apps using TypeScipt & Rust.

codeforces

leetcode

github

Anshul Bharat  • Peerlist

<h3>Stack</h3>
This project is built with a robust and modern technology stack:
<ul>
<li>Runtime: Bun</li>
<li>Backend: Hono v4</li>
<li>Frontend: Next.js 16, React 19, Tailwind CSS v4</li>
<li>Database: PostgreSQL 15 with PgBouncer</li>
<li>ORM: Prisma v7</li>
<li>Cache/Sessions: Redis v5</li>
<li>Matching Engine: TypeScript (in-process) and Go 1.22</li>
<li>Message Broker: Redpanda (Kafka-compatible)</li>
<li>WebSockets: Bun native + Redis pub/sub</li>
<li>Blockchain: Solana Web3.js, SPL Token</li>
<li>Wallet Adapters: Phantom, Solflare</li>
<li>Charts: lightweight-charts v5</li>
<li>Monorepo: Turborepo</li>
<li>Infrastructure: Docker Compose, Kubernetes, Nginx</li>
<li>Monitoring: Prometheus, Grafana</li>
</ul>
<h3>Monorepo Structure</h3>
The project is organized as a monorepo with the following structure:
<ul>
<li>apps/server: Hono API server with in-process TypeScript matching engine and a separate Go matching engine microservice.</li>
<li>apps/client: Next.js frontend application.</li>
<li>packages: Shared packages for database, configuration, types, pub/sub, and event brokering.</li>
<li>nginx: Configuration for reverse proxy, rate limiting, and WebSocket upgrades.</li>
<li>k8s: Kubernetes manifests for deployment.</li>
<li>docker-compose.yml: Docker Compose configuration for local development and deployment.</li>
</ul>
<h3>Getting Started</h3>
Prerequisites: Bun, Docker, Docker Compose, and Go (for local Go engine development).
Installation: Run bun install.
Environment Setup: Copy and fill in the .env files for both server and client.
Running Locally: Use Docker Compose to start infrastructure services (Postgres, Redis, Redpanda). Run database migrations with Prisma, then start the server and client applications.
<h3>Architecture Overview</h3>
The system follows a client-server architecture with a robust backend designed for high performance and scalability:
<ul>
<li>Requests flow from the Client through Nginx to the Server (Hono).</li>
<li>The matching engine is available in two versions: an in-process TypeScript engine (v1) and a separate Go microservice (v2) that communicates via Kafka.</li>
<li>Order settlement and WebSocket communication are handled via Kafka and Redis pub/sub.</li>
</ul>
<h3>Key Features</h3>
<ul>
<li>Centralized Cryptocurrency Exchange (CEX): A full-stack CEX built as a monorepo.</li>
<li>Dual Matching Engines: Offers both an in-process TypeScript engine for low latency and a Go microservice for high concurrency, with Kafka integration.</li>
<li>Real-time Data: WebSocket channels provide live updates for order books, trades, and tickers.</li>
<li>Solana Integration: Supports SOL and SPL token deposits and withdrawals with deterministic address generation.</li>
<li>Scalable Infrastructure: Designed for deployment on Kubernetes with Docker Compose for local development.</li>
<li>Comprehensive Monitoring: Integrated Prometheus and Grafana for system performance tracking.</li>
</ul>