Replit SDK Patterns Overview Production-ready patterns for Replit's built-in services: Key-Value Database ( / ), Object Storage ( ), PostgreSQL ( ), and Auth headers. Covers singleton clients, error handling, and type-safe wrappers. Prerequisites - and configured (see ) - Familiarity with async/await patterns - Understanding of Replit's service model Instructions Step 1: Database Client Singleton (Node.js) Step 2: Object Storage Wrapper Step 3: PostgreSQL Connection Pool Step 4: Auth Middleware Pattern Step 5: Python Patterns Step 6: Retry with Backoff Error Handling | Pattern | Use Case | Be…