python3-cachetools 1.0.3-1 (amd64 binary) in ubuntu xenial

 This Python 3 module provides various memoizing collections and decorators,
 including a variant of the Python 3 Standard Library functools.lru_cache()
 function decorator.
 .
 The supported cache algorithms are:
 .
  * Least recently used (LRU)
  * Least frequently used (LFU)
  * Random replacement (RR)
  * Per-item time-to-live (TTL)