def set(self, k, v):
        self.store[k] = (time.time(), v)
        self._persist()
The tracking class keeps a most recently used cache of values
dataset/ETHPy150Open calston/tensor/tensor/utils.py/PersistentCache.set--crossover with--dataset/ETHPy150Open cemoody/lda2vec/lda2vec/tracking.py/Tracking.__init__