What is the latest version of celery to support Python?
Language interoperability can also be achieved by exposing an HTTP endpoint and having a task that requests it (webhooks). Celery 4.x was the last version to support Python 2.7, Celery 5.x requires Python 3.6 or later.
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What is the difference between Kafka and Celery task queue?
The developers describe Celery as “Distributed Task Queue”. Celery is an asynchronous task queue/job queue based on distributed message passing. It focuses on real-time operation, but also supports programming. On the other hand, Kafka is detailed as “High-performance, fault-tolerant, distributed pub-sub messaging system.”
In what kind of language is celery written?
Celery is written in Python, but the protocol can be implemented in any language. In addition to Python, there is node-celery and node-celery-ts for Node.js and a PHP client. Language interoperability can also be achieved by exposing an HTTP endpoint and having a task that requests it (webhooks). What I need? ¶
How to specify package dependencies for celery?
Celery also defines a group of packages that can be used to install Celery and the dependencies for a given feature. You can specify them in your requirements or on the pip command line using square brackets. Multiple packages can be specified by separating them with commas.
Can a celery task use a database transaction?
If your Celery task needs to update a database record, it makes sense to use a database transaction in the Celery task. A better approach is to write a custom decorator that supports transactions – this tutorial looked at how to get Celery to work well with Django’s database transactions.
How to update status in celery task object?
You must explicitly enable it through the Celery configuration, by setting task_track_started = True. The Celery task object provides an update_state method. This method allows you to do three things:
When does celery task run in Django?
Force the Celery task to run after a period of time. Django has a callback function called transaction.on_commit that is called after a transaction commits successfully. To use this, update the view as follows: Now the task is not called until after the transaction commit from the database.