Nick Brachet

Standard implementation for lower_bound/upper_bound/equal_range.

4

Namely (quoting cppreference.com): - `lower_bound` "Returns an iterator pointing to the first element that is not less than (i.e. greater or equal to) key." - `upper_bound` "Returns an iterator pointing...

Optimistically return metrics from the cache (if present)

9

*before* building a metric to add to the cache.