Can Flask be used to create high-load systems?

Flask is a lightweight web framework in Python, well-suited for rapid prototyping and small applications. However, for high-load systems, its capabilities are limited by default, as Flask itself is not asynchronous and does not provide built-in scaling tools.

Nevertheless, Flask can be used in high-load systems under the following conditions:

• Run the Flask application behind a high-performance WSGI server (e.g., Gunicorn or uWSGI) with multiple workers to handle concurrent requests.
• Use load balancers and horizontal scaling (multiple application instances).
• Optimize code and use caching.
• In some cases, integrate Flask with asynchronous components or use extensions.

Thus, Flask can be part of a high-load system, but it requires additional infrastructure and optimizations. For very high loads, more specialized solutions or asynchronous frameworks (e.g., FastAPI) are sometimes chosen.