A way to flush the template cache / remove old files

[defcube]

I had several old cache files on disk that I wanted to clean up. The problem is that the templatetag_cachekey remembers the path of the old compressed .js.

Short of flushing all of my memcache keys, is there a way to flush just the compressor templatetag keys?

[jezdez]

There is no effective way to select all cache keys of django_compressor (although you could iterate over all keys and look for those that start with the default prefix django_compressor..

Instead I would suggest to use Django's ability to handle multiple cache backends, as mentioned in the docs

Simply set your COMPRESS_CACHE_BACKEND setting to a different backend than your "default" and you can easily clear it with the clear method as described here: https://docs.djangoproject.com/en/dev/topics/cache/#the-low-level-cache-api

EDIT: Getting to the backend is as easy as importing django.core.cache.get_cache and using it like this:

 my_special_cache = get_cache(settings.COMPRESS_CACHE_BACKEND)
 my_special_cache.clear()

[jezdez]

Ah, another thing you can try is the mtime_cache management command with the --clean option. Although that'll only delete the mtime cache, not the offline cache.

[defcube]

Thanks for the suggestions. I think using a separate cache for this is the easiest solution for me.

I have tried the mtime_cache management command, but as you said it doesn't clear the offline cache.

[jbranc]

certainly would be nice to not have to host a separate cache instance just for this. it seems quite common for compressor to get out of sync between cache and file system (i.e. if you delete the CACHE directory on disk, it will forever not work until you clear the cache). paying for a separate cache server or wiping the entire existing cache are't quite as good as a simple reset command for compressor

[ivensrocha]

Does anybody knows if there is a clear cache command at this moment? How to make django-compressor begin to compress files all over again, setting new keys into the cache, since the cache files were deleted?

[Alcolo47]

I don't know any such python or management command but if you use the
default COMPRESS_STORAGE (ie file storage), You can use:

python: shutil.rmtree(os.path.join(settings.STATIC_ROOT,
settings.COMPRESS_OUTPUT_DIR))
sh: rm -rf $STATIC_ROOT/$COMPRESS_OUTPUT_DIR # (I add a mistake to
prevent from stupid copy/paste consequence.)

2015-11-19 13:04 GMT+01:00 Ivens Rocha notifications@github.com:

Does anybody knows if there is a clear cache command at this moment? How
to make django-compressor begin to compress files all over again, setting
new keys into the cache, since the cache files were deleted?

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#158 (comment)
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[julianklotz]

This one is old, but here are some notes:

• Clearing the cache directory (either its contents or the directory itself) didn't do the job for me
• What works for me is clearing the contents of the static folder like cd /data/static; rm -rf . (don’t copy-paste this, rm -rf is dangerous)
• Then run ./manage.py collectstatic
• If you use offline compression, run ./manage.py compress