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d3f80e8cfd
Fix two issues with the control socket feature introduced in 25.1.0: 1. Fork deadlock (#3509): The control server runs asyncio in a background thread. When fork() is called to spawn workers, locks held by asyncio can remain locked in the child process, causing deadlocks. Fix by stopping the control server before fork and restarting after fork in the parent. 2. File watcher triggers (#3508): The default socket path `gunicorn.ctl` was created in the app directory, triggering file watchers in dev servers (e.g., GAE dev_appserver). Fix by changing the default path to `/tmp/gunicorn.ctl`. Fixes #3508 Fixes #3509
Gunicorn
Gunicorn is maintained by volunteers. If it powers your production, please consider supporting us:
Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resource usage, and fairly speedy.
New in v25: Per-app worker allocation for dirty arbiters, HTTP/2 support (beta)!
Quick Start
pip install gunicorn
gunicorn myapp:app --workers 4
For ASGI applications (FastAPI, Starlette):
gunicorn myapp:app --worker-class asgi
Features
- WSGI support for Django, Flask, Pyramid, and any WSGI framework
- ASGI support for FastAPI, Starlette, Quart
- HTTP/2 support (beta) with multiplexed streams
- Dirty Arbiters (beta) for heavy workloads (ML models, long-running tasks)
- uWSGI binary protocol for nginx integration
- Multiple worker types: sync, gthread, gevent, eventlet, asgi
- Graceful worker process management
- Compatible with Python 3.9+
Documentation
Full documentation at https://gunicorn.org
Community
- Report bugs on GitHub Issues
- Chat in #gunicorn on Libera.chat
- See CONTRIBUTING.md for contribution guidelines
Support
Powering Python apps since 2010. Support continued development.
License
Gunicorn is released under the MIT License. See the LICENSE file for details.