keystone.common.cache.core module¶
Keystone Caching Layer Implementation.
-
class
keystone.common.cache.core.
DistributedInvalidationStrategy
(region_manager)[source]¶ Bases:
dogpile.cache.region.RegionInvalidationStrategy
-
invalidate
(hard=None)[source]¶ Region invalidation.
CacheRegion
propagated call. The default invalidation system works by setting a current timestamp (usingtime.time()
) to consider all older timestamps effectively invalidated.
-
is_hard_invalidated
(timestamp)[source]¶ Check timestamp to determine if it was hard invalidated.
- Returns
Boolean. True if
timestamp
is older than the last region invalidation time and region is invalidated in hard mode.
-
is_invalidated
(timestamp)[source]¶ Check timestamp to determine if it was invalidated.
- Returns
Boolean. True if
timestamp
is older than the last region invalidation time.
-
is_soft_invalidated
(timestamp)[source]¶ Check timestamp to determine if it was soft invalidated.
- Returns
Boolean. True if
timestamp
is older than the last region invalidation time and region is invalidated in soft mode.
-
-
class
keystone.common.cache.core.
RegionInvalidationManager
(invalidation_region, region_name)[source]¶ Bases:
object
-
REGION_KEY_PREFIX
= '<<<region>>>:'¶
-
property
region_id
¶
-
-
keystone.common.cache.core.
create_region
(name)[source]¶ Create a dopile region.
Wraps oslo_cache.core.create_region. This is used to ensure that the Region is properly patched and allows us to more easily specify a region name.
- Parameters
name (str) – The region name
- Returns
The new region.
- Return type
dogpile.cache.region.CacheRegion