Pros and cons. What Celery does well, and what to expect.
Pros
- Completely free and open source (BSD).
- Battle-tested in production (Instagram, Mozilla, Robinhood).
- Flexible: choose broker and worker modes.
- Rich ecosystem (Flower, plugins, monitoring tools).
- Scheduling, retries, dead-letter queues native.
Cons
- Steep learning curve.
- Requires broker infrastructure (Redis, RabbitMQ).
- Ops to manage (deployment, monitoring, scaling workers).
- No native UI (Flower is third-party).
- Distributed debugging can be complex.
