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Provide hints to optimize database usage by deferring unused fields

Project description

Django Eraserhead

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Provide hints to optimize database usage by deferring unused fields

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*WARNING* use this package only in dev environment!



* Django 1.9+
* Python 2.7, 3.4+


Install Django Eraserhead::

pip install django-eraserhead

Add it to your `INSTALLED_APPS`:

.. code-block:: python




* `ERASERHEAD_ENABLED` - enable/disable Django Eraserhead
* `ERASERHEAD_TRACEBACK_BASE_PATH` - set base path to filter tracebacks. Set to `None` to display full traceback.


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Django Eraserhead monitors:

* querysets/models fields usage (used and unused fields) with considering deferred fields
* count of instances created for each queryset
* corresponding model of each queryset
* traceback for each queryset to easily find corresponding code
* calculate memory consumption of unused fields

Based on fields usage Django Eraserhead suggests optimizations for each queryset.


* decorator and/or context processor for partial stats collecting
* detect deferred fields loading
* auto deferring fields based on usage
* display deferred fields

Running Tests


source <YOURVIRTUALENV>/bin/activate
(myenv) $ pip install tox
(myenv) $ tox


Tools used in rendering this package:

* Cookiecutter_
* `cookiecutter-djangopackage`_

.. _Cookiecutter:
.. _`cookiecutter-djangopackage`:

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