def kv_delete(key):
"""DELETEs `key` from key-value storage
"""
c = KVStorageCache(prekey=key)
c.invalidate_cache()
kv_obj = _get_kv_obj(key)
if kv_obj:
kv_obj.delete()
def kv_get(key, cache_only=False, force_refetch=False):
"""GETs the value of `key` from key-value storage
`cache_only` == True : skips lookup in db, returns the cached value or None
"""
c = KVStorageCache(prekey=key)
if force_refetch:
c.invalidate_cache()
value = c.get()
if value is None and not cache_only:
kv_obj = _get_kv_obj(key)
if kv_obj:
value = kv_obj.value
c.cache_store(value)
return value
