zodb / relstorage / 853

92%

master: 92%

Pull #256

travis-ci

Validate older cache entries when loading from a persistent cache.

This makes the cache useful again for objects that rarely change in write-heavy databases. The cost appears to be less than 1s per 100K cached objects.

This does mean that we should more carefully track frequency of hits and evict old objects that are never actually used, though.

Also, we should propagate invalidations down to the persistent cache layer, but this isn't done here.

211 of 211 new or added lines in 6 files covered. (100.0%)

11556 of 12618 relevant lines covered (91.58%)

3.62 hits per line