Management command scheduling options

[Mike Dewhirst]

Django docs suggest cron or Windows scheduler for running management commands.

I would like instead to build an internal Django based scheduler - because after migrating to a new server, setting up the new cron task will be forgotten.

Is there a daily (approximately) event in a Django project I can hook into and test the date?

The task is somewhat database intensive and needs to run quarterly for some users, monthly for most and weekly for others depending on their preferences.

Ideas anyone?

Thanks

Mike

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[Alessandro Madruga Correia]

Django-celery 

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[Rodrigo Bistolfi]

Use devops for setting up cron jobs as part of the deployment process. You could also use something like https://apscheduler.readthedocs.io/en/3.x/ if you wanna something OS independent.

[Ahmedrufai Otuoze]

Hi Mike,

I've implemented something similar to what you mentioned lately. I used this Python package called APScheduler to schedule and run database intensive queries behind the scene and then cache the result for my users to fetch from making their experience super fast.

The APScheduler can be configured to run at any interval daily, weekly, monthly or any customized interval you require. It's a game changer and a quick win for Windows based OS as they don't support the use of Celery or any other Linux based schedulers without WSL.

Do let me know if you're interested in my implementation, I'm open to show you.

Regards 

[Mike Dewhirst]

On 23/10/2023 11:48 pm, Rodrigo Bistolfi wrote:

Use devops for setting up cron jobs as part of the deployment process.

My requirement is very lightweight and cron would definitely work for me. Both Celery and APScheduler seem like overkill.

How would you ensure the cron job was established on a new server?

Mike

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[Mike Dewhirst]

Ahmedrufai

I looked at APScheduler and like Celery it is too much of a sledgehammer for my tiny problem. 

I ended up using cron to launch the command each day. It works perfectly.

My task now is to find a way to automate establishment of that crontab entry when the project is migrated to a new server.

Cheers

Mike

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[Larry Martell]

On Wed, Oct 25, 2023 at 5:35 AM Mike Dewhirst <mi...@dewhirst.com.au> wrote:
>
> Ahmedrufai
>
> I looked at APScheduler and like Celery it is too much of a sledgehammer for my tiny problem.
>
> I ended up using cron to launch the command each day. It works perfectly.
>
> My task now is to find a way to automate establishment of that crontab entry when the project is migrated to a new server.

How are new servers deployed? How many new servers will be deployed?
If it's a one off thing you are doing manually, you just have to
remember to do it. If there are many, then you should use a tool like
terraform or octopus, or something similar and have that do it.

[Adam Stein]

I use django-crontab myself for cron jobs. That way, I can add or update easily during deployment. Maybe you can make use of that so you can keep everything in your project.

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[Janet Anastacia]

I'm new to Django development, I kindly ask for the best free  websites to learn Django for beginners in 2023. I have tried to learn from different websites but I don't seem to grab anything. 

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[SUNIL PATEL]

https://tutorial.djangogirls.org/en/

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[Mike Dewhirst]

On 25/10/2023 11:24 pm, Larry Martell wrote:

On Wed, Oct 25, 2023 at 5:35 AM Mike Dewhirst <mi...@dewhirst.com.au> wrote:

Ahmedrufai

I looked at APScheduler and like Celery it is too much of a sledgehammer for my tiny problem.

I ended up using cron to launch the command each day. It works perfectly.

My task now is to find a way to automate establishment of that crontab entry when the project is migrated to a new server.

How are new servers deployed? How many new servers will be deployed?
If it's a one off thing you are doing manually, you just have to
remember to do it.

It is a one-off but I'm assuming it will be someone else needing to do it rather than me.

 If there are many, then you should use a tool like
terraform or octopus, or something similar and have that do it.

[Mike Dewhirst]

This looks excellent, Adam. Thanks. I'll report back in due course.

Mike

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[Vincenzo Celano]

Try this video in YouTube:

Python Django 7 Hour Course

Ciao!

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