cubicweb #2573875 compare querycache efficiency to the python 3 LRU cache [open]

see https://code.activestate.com/recipes/578078-py26-and-py30-backport-of-python-33s-lru-cache/

prioritynormal
typeenhancement
done in<not specified>
load0.500
load left0.500
closed by<not specified>