AioHTTP Python

AioHTTP is an async HTTP client and lightweight web framework for Python. On the client side, it's a replacement for requests/urllib that lets you fetch hundreds of URLs concurrently without threads. On the server side, it's a micro-framework for building async web services, similar to FastAPI but lighter and more flexible. Core use cases: (1) async web scraping (10k+ concurrent requests), (2) API aggregation (call multiple services simultaneously), (3) async microservices, (4) WebSocket servers. aiohttp shines when you have high concurrency and I/O waiting.