[Owncloud] CronJob System within ownCloud

[Jakob Sack]

Hi all,

after the sprint in Stuttgart I talked with Jörn Friedrich Dreyer about 
the background job problem. If I remember correctly the two most 
important suggestions were (a) using cron and (b) using long time 
polling/ajax.

I'd suggest extending (or rewriting) "my" background jobs app so that 
it can make use of both cron jobs and ajax polling. Then the app can 
choose the best option out of:
1) using cron (++)
2) using some internet cron service (open the page x every y minutes) 
(+)
3) long time polling when the users are on the page (-)

The reasons for my rating: A normal cron job does not rely on the 
limitations that apache might have (memory limit, time limit). An 
internet cron service has these limitations, but it works 24/7. Option 3 
runs only when users are online which is bad if you rely on having 
certain tasks done at a given time.

What do you think?
Regards,

Jakob

Am 22.07.2012 17:13, schrieb Alessandro Cosentino:
> I need a cron job system for news app too. The use case is the
> following: if the user doesn't check the reader for a long time, he
> might miss some items that might have been in the feed and then been
> removed. This happens with feeds that have frequent updates.
>
> I know that Jakob is working on this.
>
> Alessandro
>
> On Sun, Jul 22, 2012 at 9:00 AM, Georg Ehrke
> <ownclouddev at georgswebsite.de> wrote:
>> Hi all,
>> I was just wondering if someone is working on a kind of cronjob 
>> system for ownCloud.
>> I know that there is the background job app by Jakob, but this app 
>> requires an entry in the crontab file.
>> I am currently working on remote calendars and it would be quite 
>> useful to have a cron job system, to automatically update the remote 
>> calendars.
>> It would actually work without a cronjob system, if you update them 
>> if the user is using the calendar, but a cronjob system would make it 
>> more comfortable.
>>
>> But there are some planned features, that wouldn't work without a 
>> cronjob system.
>> An Example would be an automatic e-mail reminder before an event 
>> starts.
>>
>> Does anybody has a clue on how I could solve this problem without 
>> making an entry in the crontab file a hard dependency?
>>
>> Cheers,
>> Georg Ehrke
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