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get_cache_or_query - Shortcut to common cache signature

Author:
menendez
Posted:
May 5, 2008
Language:
Python
Version:
.96
Tags:
cache optimization get_cache_or_object
Score:
6 (after 6 ratings)

Replaces something like this: cache_key = 'game1' the_game = cache.get(cache_key) if not the_game: the_game = Game.objects.get(id=1) cache.set(cache_key, the_game, 60245)

With this: the_game = get_cache_or_query('game1', Game, seconds_to_cache=60245, id=1)

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def get_cache_or_query(cache_key, model, seconds_to_cache=900, **kwargs):
    '''
        Based on concept by Rudy Menendez.
        Gets the query from cache or returns the orm.
        
        Example: the_game = get_cache_or_query('game1', Game,
                            seconds_to_cache=60*24*5, id=1) # 5 day timeout
    '''
    from django.core.cache import cache
    
    q = cache.get(cache_key)
    if not q:
        q = model.objects.get(**kwargs)
        cache.set(cache_key, q, seconds_to_cache)
    return q

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