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A decent usage manual can be found here.

Memcached – Load data in memory during server startup in Django app

I am creating a Django app wherein I need to load and keep some data in memory when the server starts for quick access. To achieve this I am using Django’s AppConfig class. The code looks something like this :

from django.core.cache import cache
class myAppConfig(AppConfig):
    name = 'myapp'
     def ready(self):
        data = myModel.objects.values('A','B','C') 
        cache.set('mykey', data)

The problem is that this data in cache will expire after sometime. One alternative is to increase the TIMEOUT value. But I want this to be available in memory all the time. Is there some other configuration or approach which I can use to achieve this ?

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2

Answers


  1. 0

    If you are using Redis. It does provide persistent data capture.

    Check it out in https://redis.io/topics/persistence

    You have to set it up by Redis Configuration.
    There will be two methods to keep the data persist in the cache after reboot – both of them will save the data in other formats in HDD. I will suggest you set up the AOF for your purpose since it will record every write operation. However, it will cause more space.

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  2. 0

    The cache timeout argument can be set to None so that it never expires.

    cache.set('mykey', data, timeout=None)

    https://docs.djangoproject.com/en/5.0/topics/cache/#cache-arguments

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