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  • 21. WebSockets vs polling for live price updates in crypto apps
    Welcome to My Technical Blog >  Multi Crypto Trading Tool >  Dev Logs
Black_JJW's Blog
  • Home
  • Multi Crypto Trading Tool
    • Dev Logs
      • 1. Project Initialization
      • 2. Setting Up the Backend
      • 3. Logger Configuration
      • 4. Set Configurations
      • 5. Database Connection Management
      • 6. Login
      • 7. Topbar Menu
      • 8. Login Log
      • 9. Refactoring 1: Backend - Separate AuthService and Move Login API
      • 10. Managing API Keys - Backend Implementation
      • 11. Managing API Keys - Frontend Implementation
      • 12. Refactoring 2: Backend - Applying Async Database Management
      • 13. Login Log - Frontend
      • 14. Makefile Setup
      • 15. FastAPI Service Architecture: Thin Routers, Service Layer, and DTO Patterns
      • 16. Idempotency and Replay Safety for Trade Execution Endpoints
      • 17. Testing Async Services in FastAPI: pytest‑asyncio Fixtures and Mocks
      • 18. Securing API keys and secrets with Pydantic settings + .env
      • 19. Observability for trading systems: logging, metrics, and tracing basics
      • 20. Designing resilient exchange adapters (rate limits, errors, retries)
      • 21. WebSockets vs polling for live price updates in crypto apps
      • 22. Redis + Postgres patterns for market data caching and persistence
      • 23. Async trading workflows: handling long‑running tasks and retries
  • Learning Notes
    • Deep Learning
      • 1. Single-Layer Perceptron
      • 2. Tensor Operation & Minibatch
      • 3. Regression Analysis & MSE Loss function
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