Adds cache mode fixes, overridden_cache_mode method, and impl Default for CacheMode

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c1e8b6b) 92.58% compared to head (97fe6de) 92.90%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #67 +/- ## ========================================== + Coverage 92.58% 92.90% +0.31% ========================================== Files 11 11 Lines 1092 1141 +49 ========================================== + Hits 1011 1060 +49 Misses 81 81 ```

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