Backend Infrastructure
Rem is built for high-concurrency, low-latency financial operations using a modern TypeScript/monorepo approach.Core Runtime
- Bun: Used as the primary runtime, package manager, and test runner for superior performance.
- Turborepo: Orchestrates the monorepo task caching across
/api,/sdk,/mcp, and/db.
API Framework
- Hono: A fast, lightweight web framework used for routing and RPC.
- Zod: Used for exhaustive runtime validation and type inference across all endpoints.
Data Layer
- Drizzle ORM: A lightweight TypeScript ORM for schema management and type-safe queries.
- PostgreSQL: The primary relational database (managed via Supabase or Neon).
- Redis: Used for job queues (BullMQ) and rate limiting (Upstash).
Web3 & Blockchain Integration
We leverage industry-standard SDKs to interact with multiple chains and stablecoin protocols:- Circle SDK: Core integration for USDC issuance and transfers.
- Solana Web3.js: High-velocity transaction handling on Solana.
- Viem: Type-safe interactions with EVM chains (Base, Polygon).
- x402: Protocol middleware for machine-to-machine payments.
Reliability & Security
Production Hardening
- Idempotency: CUID2-based idempotency keys on all wallet operations to prevent duplicate sends.
- Circuit Breakers: Individual breakers for external dependencies (Circle, Solana RPC) to ensure the system fails fast and recovers gracefully.
- Rate Limiting: Consistent hash-based rate limiting per API key.
- Audit Logging: Every sensitive operation is logged with a permanent timestamp and actor ID.
Monitoring
- Sentry: Real-time error tracking and performance monitoring.
- Pino: Structured JSON logging for deep observability.
Development Tools
We provide standard developer tools to speed up integration:- TypeScript SDK: Auto-generated from our OpenAPI specification.
- MCP Server: A Model Context Protocol server for direct AI agent integration.
- Developer Dashboard: For managing API keys, webhooks, and monitoring transaction logs.