Category Archives: Programming

Build a real async news aggregator step by step — fetching RSS feeds concurrently with aiohttp, the same code used in the Alfred open-source project. Each section adds one asyncio pattern: gather, TaskGroup, timeout, Semaphore, and format_news.

Master Python concurrency: understand when to use threads, processes, or asyncio — and why the event loop became the backbone of modern high-throughput applications.

Learn how to build a clean, transactional database layer in Python using SQLAlchemy ORM, a DatabaseSessionManager, DAO models, and the DAO vs DTO boundary inside a layered architecture.

Typer brings Python type hints to CLI development — no decorators, no boilerplate, just annotated functions. See how it compares to argparse and Click on the same Task Manager CLI.

Learn how the Click library simplifies Python CLI development — cleaner commands, built-in type validation, and no shared execute() boilerplate.

Learn how to build a generic, configurable cron job class in Python with APScheduler — run periodic tasks in the background with clean scheduling, logging, and error handling.

Learn how to centralize logging in a Flask application with Loguru, including stdout/file outputs and standard logging interception.