django-concurrency | Prevents users

by saxix Python Version: Current License: MIT

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Optimistic lock implementation for Django. Prevents users from doing concurrent editing.

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Trending Discussions on django-concurrency

django-concurrency is doing nothing

Django: Concurrent access to settings.py

QUESTION

django-concurrency is doing nothing

Asked 2017-May-16 at 03:20

I am testing my app for concurrency I am using django-concurrency

For every model added

...

ANSWER

Answered 2017-May-16 at 03:20

I have never used Django concurrency and I would run a mile if I run across apps that offer to abstract concurrency, transaction management etc. Based on general concepts of concurrency. This behaviour seems right. There's no error here.

django-concurrency is an optimistic lock [1] implementation for Django.

Supported Django versions: 1.8.x, 1.9.x, 1.10.x., 1.11.x

It prevents users from doing concurrent editing in Django both from UI and from a django command.

What this actually means is that two users cannot modify the same instance at the same time. In adhoc two browser testing of the sort that's just tried out, such a situation can never be produced! What usually happens is that one or the other transaction usually runs to completion because when testing on small databases on localhost, there is no latency and everything happens instantly.

The proper way to test this is to open up to separate change shells, open up the same instance and edit as outlined in the django concurrency guide. Or test with a multi threaded client.

Source https://stackoverflow.com/questions/43991894

QUESTION

Django: Concurrent access to settings.py

Asked 2017-Jan-09 at 16:41

I am not sure whether I have to care about concurrency, but I didn't find any documentation about it.

I have some data stored at my settings.py like ip addresses and each user can take one or give one back. So I have read and write operations and I want that only one user read the file at the same moment.

How could I handle this?

And yes, I want to store the data at the settings.py. I found also the module django-concurrency. But I couldn't find anything at the documentation.

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ANSWER

Answered 2017-Jan-05 at 12:32

And yes, I want to store the data at the settings.py.

No you definitely don't want to do that. the settings.py file is configuring django and any pluggable apps that you may use with it. it's not intended to be used as a place for dumping data. Data goes into a database.

And don't forget that the settings.py file is usually read only once.

Source https://stackoverflow.com/questions/41485130

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