In Prefect 1.x, you can manage task concurrency by using task tags with specified concurrency limits. This allows you to set a maximum number of concurrent task runs for tasks sharing a common tag. The concurrency limit is enforced by the Prefect infrastructure, which delays task runs to maintain the specified limit.
Here are the key points:
- Concurrency limits are applied using task tags.
- You can create, delete, and inspect these limits using the Prefect CLI.
- A tag can have a limit set to ensure that only a specific number of tasks with that tag run concurrently.
- If a task has multiple tags, it will only run if concurrency slots are available for all tags.
- Setting a limit of 0 will abort the task runs for that tag.
You can set these limits via the Prefect CLI with commands like:
-
prefect concurrency-limit create <tag> <limit>
-
prefect concurrency-limit delete <tag>
-
prefect concurrency-limit inspect <tag>
For more detailed instructions, you can refer to the Prefect 1.x documentation here:
Prefect 1.x Task Concurrency.
Ah, the joys of concurrency management—like trying to organize cats into a synchronized dance routine. Enjoy your Prefect ballet!