django-cache-utils2
django-cache-utils2 provides cached decorator and invalidate function.
Installation
pip install django-cache-utils2
Usage
from cache_utils2 import cached, invalidate
@cached(60)
def foo(x, y=0):
print 'foo is called'
return x+y
foo(1, 2) # foo is called
foo(1, y=2)
foo(5, 6) # foo is called
foo(5, 6)
invalidate(foo, {'x': 1, 'y': 2})
foo(1, 2) # foo is called
foo(5, 6)
foo(x=2) # foo is called
foo(x=2)
class Foo(object):
@cached(60)
def foo(self, x, y):
print "foo is called"
return x+y
obj = Foo()
obj.foo(1,2) # foo is called
obj.foo(1,2)
invalidate(Foo.foo, {'x': 1, 'y': 2})
obj.foo(1,2) # foo is called
Django example
from django.db import models
from cache_utils2 import cached, invalidate
class CityManager(models.Manager):
# cache a method result. 'self' parameter is ignored
@cached(60*60*24)
def default(self):
return self.active()[0]
# cache a method result. 'self' parameter is ignored, args and
# kwargs are used to construct the cache key
@cached(60*60*24)
def get(self, *args, **kwargs):
return super(CityManager, self).get(*args, **kwargs)
class City(models.Model):
# ... field declarations
objects = CityManager()
# cache django model instance method result by instance pk
@cached(30, vary='self.pk')
def has_offers(self):
return self.offer_set.count() > 0
# invalidation of model methods
invalidate(City.has_offers, {'self.pk': 1}
Notes
If decorated function returns cache_utils2.NO_CACHE cache will be bypassed.
Running tests
Get the source code and run runtests.py.
1 maintainer
Metadata
1 maintainer
Release files for django-cache-utils2 0.1
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Release files / django-cache-utils2-0.1.tar.gz
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