Making Cache Monotonic and Consistent

We propose monotonic consistent caching (MCC), a cache scheme for applications that demand consistency and monotonicity. MCC warrants transaction-like request always sees view of the backend database observed writes over will not be lost. show complexity ranges from P time to N p -C omplete . characterize via notion obsolete items, based on which we abstract principle designing competitive policies. By applying principle, develop an optimal policy batch model, where requests in are known advance. For online semi-online models, ML-augmented policies benefit blackbox ML models classifying while being provably even if is arbitrarily bad. Using benchmark real-life traces, reduce 39.09% reads Redis atop HBase improve their throughput by 77.15%.