uWSGI Backend¶
- class cachelib.uwsgi.UWSGICache(default_timeout=300, cache='')¶
Bases:
BaseCache
Implements the cache using uWSGI’s caching framework.
Note
This class cannot be used when running under PyPy, because the uWSGI API implementation for PyPy is lacking the needed functionality.
- Parameters:
default_timeout (int) – The default timeout in seconds.
cache (str) – The name of the caching instance to connect to, for example: mycache@localhost:3031, defaults to an empty string, which means uWSGI will cache in the local instance. If the cache is in the same instance as the werkzeug app, you only have to provide the name of the cache.
- add(key, value, timeout=None)¶
Works like
set()
but does not overwrite the values of already existing keys.- Parameters:
- Returns:
Same as
set()
, but alsoFalse
for already existing keys.- Return type:
boolean
- clear()¶
Clears the cache. Keep in mind that not all caches support completely clearing the cache.
- Returns:
Whether the cache has been cleared.
- Return type:
boolean
- delete(key)¶
Delete key from the cache.
- Parameters:
key (str) – the key to delete.
- Returns:
Whether the key existed and has been deleted.
- Return type:
boolean
- get(key)¶
Look up key in the cache and return the value for it.
- has(key)¶
Checks if a key exists in the cache without returning it. This is a cheap operation that bypasses loading the actual data on the backend.
- serializer = <cachelib.serializers.UWSGISerializer object>¶
- set(key, value, timeout=None)¶
Add a new key/value to the cache (overwrites value, if key already exists in the cache).
- Parameters:
- Returns:
True
if key has been updated,False
for backend errors. Pickling errors, however, will raise a subclass ofpickle.PickleError
.- Return type:
boolean