django-cache-memoize

import random from django.conf import settings from django.core.cache import cache from django.http import HttpResponse from cache_memoize import cache_memoize # Minimal Django settings for cache configuration if not settings.configured: settings.configure( CACHES={ 'default': { 'BACKEND': 'django.core.cache.backends.locmem.LocMemCache', 'LOCATION': 'unique-snowflake', } } ) # Example of a function that would be expensive @cache_memoize(timeout=60 * 5) # Cache for 5 minutes def expensive_calculation(a, b): print(f"Calculating for {a}, {b}...") # This will only print on cache miss return a + b + random.randint(0, 100) # Example Django view def my_view(request): result1 = expensive_calculation(10, 20) result2 = expensive_calculation(10, 20) # This should be a cache hit result3 = expensive_calculation(1, 2) # Invalidate cache for specific arguments # expensive_calculation.invalidate(10, 20) # print("Invalidated (10, 20)") # result_after_invalidation = expensive_calculation(10, 20) return HttpResponse( f"Result 1 (10, 20): {result1}<br>" + f"Result 2 (10, 20) (cached): {result2}<br>" + f"Result 3 (1, 2): {result3}<br>" + f"Cache key for (10, 20): {expensive_calculation.get_memoize_key(10, 20)}" ) # To run this, you would integrate it into a Django project's urls.py # e.g., path('my_cached_view/', my_view), # and ensure Django's cache settings are configured (as above or in settings.py)