In Django development, while SQLite3 is often used for databases and static/media files are stored locally during development, in production—especially on platforms like Heroku—you need to use more robust solutions. Heroku’s dynos are lightweight virtual containers that don’t retain files across redeployments, meaning SQLite3 data, static files, and user-uploaded media would be erased. This is why using third-party cloud services like RDS PostgreSQL for databases and AWS S3 for static/media storage is necessary. Additionally, Django uses Heroku for its rapid deployment, automatic GitHub integration, and built-in SSL support, making it ideal for both simple and complex applications.

Python’s asyncio library offers an efficient way to handle concurrent I/O-bound operations using the async and await syntax. Unlike traditional multithreading or multiprocessing, asyncio operates with a single-threaded event loop, allowing coroutines to execute cooperatively. This approach enhances responsiveness and scalability in applications such as web servers and network clients, making asyncio a powerful tool for handling high-performance asynchronous tasks.