djangocachingredisdjango-redis

Django Use multiple redis for caching


I have a Django project and i am using django-redis where I want to implement different types of caching,

  1. Caching search query
  2. Caching static pages
  3. Cache user Data (eg: online status)

I can add different prefix for different kind of caching, but I want to use different redis server for all the different caching I have. I couldn't find anything on the docs how to do this

My current settings

CACHES = {
"default": {
    "BACKEND": "django_redis.cache.RedisCache",
    "LOCATION": "redis://localhost:6379/1",
    "OPTIONS": {
        "CLIENT_CLASS": "django_redis.client.DefaultClient",
        "PARSER_CLASS": "redis.connection.HiredisParser",
        "IGNORE_EXCEPTIONS": True,
    },
    "KEY_PREFIX": "db_cache",
}

}

What I would want

CACHES = {
"default": {
    "BACKEND": "django_redis.cache.RedisCache",
    "LOCATION": "redis://localhost:6379/",
    "OPTIONS": {
        "CLIENT_CLASS": "django_redis.client.DefaultClient",
        "PARSER_CLASS": "redis.connection.HiredisParser",
    },
    "KEY_PREFIX": "db_cache",
},
'static_page': {
    "BACKEND": "django_redis.cache.RedisCache",
    "LOCATION": "redis://localhost:6378/",
    "OPTIONS": {
        "CLIENT_CLASS": "django_redis.client.DefaultClient",
        "PARSER_CLASS": "redis.connection.HiredisParser",
        "IGNORE_EXCEPTIONS": True,
    },
    "KEY_PREFIX": "db_cache",
},
'user_data': {
    "BACKEND": "django_redis.cache.RedisCache",
    "LOCATION": "redis://localhost:6377/",
    "OPTIONS": {
        "CLIENT_CLASS": "django_redis.client.DefaultClient",
        "PARSER_CLASS": "redis.connection.HiredisParser",
    },
    "KEY_PREFIX": "db_cache",
}

}


Solution

  • Well I found the answer while looking for something else

    Instead of using

    from django.core.cache import cache
    cache.set('hello', 'bye')
    cache.get('hello')
    

    which stores the data in the default caching Use something like this

    from django.core.cache import caches
    c = caches['static_page']
    c.set('hello', 'bye')
    c.get('hello')
    

    It is such a small thing that most of the document don't mention it separately, and you might miss it when going through the documentation.