Concurrency

Async programming in Python is no longer just for experts. With asyncio, async/await syntax, and modern libraries like httpx and aiofiles, you can write highly performant, non-blocking Python code with ease. Here's your complete guide.

Two requests check inventory simultaneously — both see 1 item in stock. Both proceed to purchase. You ship 2 items from 1. Race conditions in distributed systems are subtler than single-process races because you can't use mutexes across services. Here's how to prevent them.