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from cacheops import invalidate_obj, invalidate_model
from cacheops.conf import settings
from cacheops.redis import redis_client
from cacheops.tree import dnfs
from .models import Category, Post, Extra
posts = list(Post.objects.cache().all())
posts_pickle = settings.CACHEOPS_SERIALIZER.dumps(posts)
def do_pickle():
settings.CACHEOPS_SERIALIZER.dumps(posts)
def do_unpickle():
settings.CACHEOPS_SERIALIZER.loads(posts_pickle)
get_key = Category.objects.filter(pk=1).order_by()._cache_key()
def invalidate_get():
redis_client.delete(get_key)
def do_get():
Category.objects.cache().get(pk=1)
def do_get_nocache():
Category.objects.nocache().get(pk=1)
c = Category.objects.first()
def invalidate_count():
invalidate_obj(c)
def do_count():
Category.objects.cache().count()
def do_count_nocache():
Category.objects.nocache().count()
fetch_qs = Category.objects.all()
fetch_key = fetch_qs._cache_key()
def invalidate_fetch():
redis_client.delete(fetch_key)
def do_fetch():
list(Category.objects.cache().all())
def do_fetch_nocache():
list(Category.objects.nocache().all())
def do_fetch_construct():
Category.objects.all()
def do_fetch_cache_key():
fetch_qs._cache_key()
filter_qs = Category.objects.filter(pk=1)
def do_filter_cache_key():
filter_qs._cache_key()
def do_common_construct():
return Category.objects.filter(pk=1).exclude(title__contains='Hi').order_by('title')[:20]
def do_common_inplace():
return Category.objects.inplace() \
.filter(pk=1).exclude(title__contains='Hi').order_by('title')[:20]
common_qs = do_common_construct()
common_key = common_qs._cache_key()
def do_common_cache_key():
common_qs._cache_key()
def do_common_dnfs():
dnfs(common_qs)
def do_common():
qs = Category.objects.filter(pk=1).exclude(title__contains='Hi').order_by('title').cache()[:20]
list(qs)
def do_common_nocache():
qs = Category.objects.filter(pk=1).exclude(title__contains='Hi').order_by('title') \
.nocache()[:20]
list(qs)
def invalidate_common():
redis_client.delete(common_key)
def prepare_obj():
return Category.objects.cache().get(pk=1)
def do_invalidate_obj(obj):
invalidate_obj(obj)
def do_save_obj(obj):
obj.save()
### Complex queryset
from django.db.models import Q
def do_complex_construct():
return Post.objects.filter(id__gt=1, title='Hi').exclude(category__in=[10, 20]) \
.filter(Q(id__range=(10, 20)) | ~Q(title__contains='abc')) \
.select_related('category').prefetch_related('category') \
.order_by('title')[:10]
def do_complex_inplace():
return Post.objects.inplace() \
.filter(id__gt=1, title='Hi').exclude(category__in=[10, 20]) \
.filter(Q(id__range=(10, 20)) | ~Q(title__contains='abc')) \
.select_related('category').prefetch_related('category') \
.order_by('title')[:10]
complex_qs = do_complex_construct()
def do_complex_cache_key():
complex_qs._cache_key()
def do_complex_dnfs():
dnfs(complex_qs)
### More invalidation
def prepare_cache():
def _variants(*args, **kwargs):
qs = Extra.objects.cache().filter(*args, **kwargs)
qs.count()
list(qs)
list(qs[:2])
list(qs.values())
_variants(pk=1)
_variants(post=1)
_variants(tag=5)
_variants(to_tag=10)
_variants(pk=1, post=1)
_variants(pk=1, tag=5)
_variants(post=1, tag=5)
_variants(pk=1, post=1, tag=5)
_variants(pk=1, post=1, to_tag=10)
_variants(Q(pk=1) | Q(tag=5))
_variants(Q(pk=1) | Q(tag=1))
_variants(Q(pk=1) | Q(tag=2))
_variants(Q(pk=1) | Q(tag=3))
_variants(Q(pk=1) | Q(tag=4))
return Extra.objects.cache().get(pk=1)
def do_invalidate_model(obj):
invalidate_model(obj.__class__)
TESTS = [
('pickle', {'run': do_pickle}),
('unpickle', {'run': do_unpickle}),
('get_nocache', {'run': do_get_nocache}),
('get_hit', {'prepare_once': do_get, 'run': do_get}),
('get_miss', {'prepare': invalidate_get, 'run': do_get}),
('count_nocache', {'run': do_count_nocache}),
('count_hit', {'prepare_once': do_count, 'run': do_count}),
('count_miss', {'prepare': invalidate_count, 'run': do_count}),
('fetch_construct', {'run': do_fetch_construct}),
('fetch_nocache', {'run': do_fetch_nocache}),
('fetch_hit', {'prepare_once': do_fetch, 'run': do_fetch}),
('fetch_miss', {'prepare': invalidate_fetch, 'run': do_fetch}),
('fetch_cache_key', {'run': do_fetch_cache_key}),
('filter_cache_key', {'run': do_filter_cache_key}),
('common_construct', {'run': do_common_construct}),
('common_inplace', {'run': do_common_inplace}),
('common_cache_key', {'run': do_common_cache_key}),
('common_dnfs', {'run': do_common_dnfs}),
('common_nocache', {'run': do_common_nocache}),
('common_hit', {'prepare_once': do_common, 'run': do_common}),
('common_miss', {'prepare': invalidate_common, 'run': do_common}),
('invalidate_obj', {'prepare': prepare_obj, 'run': do_invalidate_obj}),
('save_obj', {'prepare': prepare_obj, 'run': do_save_obj}),
('complex_construct', {'run': do_complex_construct}),
('complex_inplace', {'run': do_complex_inplace}),
('complex_cache_key', {'run': do_complex_cache_key}),
('complex_dnfs', {'run': do_complex_dnfs}),
('big_invalidate', {'prepare': prepare_cache, 'run': do_invalidate_obj}),
('model_invalidate', {'prepare': prepare_cache, 'run': do_invalidate_model}),
]
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