store/cache: fix broken metric and current index cache size handling#873

Merged

bwplotka merged 5 commits intothanos-io:masterfrom

GiedriusS:add_evicted_metric

Mar 4, 2019

Commits on Feb 27, 2019

store/cache: do not forget to increase c.current on adding new items
Giedrius Statkevičius
committed

Commits on Feb 28, 2019

store/cache: properly adjust c.curSize
Giedrius Statkevičius
committed
store/cache: prevent uint64 overflow by switching operands
Giedrius Statkevičius
committed

Commits on Mar 1, 2019

store/cache: revert ensureFits() changes
GiedriusS
committed

Commits on Mar 3, 2019

store/cache: add smoke tests
GiedriusS
committed