Definitely graph memcached hit/miss ratios -- they're a good way to diagnose issues in your cache. However, I can think of a few instances where more logging is

Definitely graph memcached hit/miss ratios -- they're a good way to diagnose issues in your cache. However, I can think of a few instances where more logging is helpful: 1. Your cache server is shared between several different classes of objects. In this case, the overall memcache hit/miss ratios might mask issues occurring in one class of cached values. 2. You want to figure out how your cache will improve with a given change in cache size (i.e., simulate results ahead of time, as you mentioned).