graphite memcached integration does not work with django 1.5

[msn]

In settings.py, we have the following:

if MEMCACHE_HOSTS:
CACHE_BACKEND = 'memcached://' + ';'.join(MEMCACHE_HOSTS) + ('/?timeout=%d' % DEFAULT_CACHE_DURATION)

However, CACHE_BACKEND was deprecated in django 1.3 and dropped in django 1.5 (https://docs.djangoproject.com/en/1.5/internals/deprecation/).

My fix was to roll back django to version 1.4 in my graphite python virtualenv.

I'd suggest the release notes recommend a version of django >=1.3 (since check-dependencies.py now requires this) and <=1.4 until support for memcache against django 1.5 is added?

Thanks!

[pcn]

OK, so we need to look into https://docs.djangoproject.com/en/1.5/topics/cache/ (for instance - it looks like 1.4, 1.5, and development 1.6 haven't introduced changes in the docs that stand out from a brief glimpse).

[pcn]

If I'm reading the configuration correctly, using django >= 1.5, this configuration should work:

CACHE_MIDDLEWARE_SECONDS = 60
CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': [
            '127.0.0.1:11211'
        ]
    }
}

My vagrant dev environment is not in any shape to test this. @msn if you have a chance to try this that'd be helpful.

[brutasse]

I can't find it right now but I have opened a pull request for this.

On Tuesday, 4 February 2014 at 01:44, Peter N wrote:

If I'm reading the configuration correctly, using django >= 1.5, this configuration should work:
CACHE_MIDDLEWARE_SECONDS = 60 CACHES = { 'default': { 'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache', 'LOCATION': [ '127.0.0.1:11211' ] } }

My vagrant dev environment is not in any shape to test this. @msn (https://github.com/msn) if you have a chance to try this that'd be helpful.

—
Reply to this email directly or view it on GitHub (#612 (comment)).

[brutasse]

Fixed in #589. Could somebody close the issue?

[stevebanik]

@pcn Your suggestion worked for me. We have Django==1.5.4 and my settings.py reads:

if MEMCACHE_HOSTS:

    CACHE_MIDDLEWARE_SECONDS = 60
    CACHES = {
        'default': {
            'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
            'LOCATION': [
                '127.0.0.1:11211'
            ]
        }

}

Make sure the indentation is correct so that Python doesn't complain.

[brutasse]

Closing as it's been fixed in master.

[esc]

can you like the commit, just for the record.

[brutasse]

@esc I did 2 comments above -- #612 (comment)

[esc]

@brutasse thank you, my bad.

[wingZero21]

@pcn + @stevebanik thanks for that!!

[gsaray101]

in order for this to work, python client memecahced needs to be installed, right?

[gsaray101]

hi,

I installed memcached and python-memchace module. Inserted these lines to my local_settings.py file:

CACHE_MIDDLEWARE_SECONDS = 60
CACHES = {
'default': {
'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
'LOCATION': [
'127.0.0.1:11211'
]
}
}

When I click on a big node on graphite, it is timing out, not able to exapand the node. Any idease what might cause that, how could I increase the timeout value? I get this error from the apache log:

RuntimeError: Unable to save data of type <type 'dict'> to cache