Counters for cache_hits and cache_lookups were added with commit
a1214a50 ("MINOR: cache: report the number of cache lookups and cache
hits") but not documented in management.txt.
83: wrew [LFBS]: cumulative number of failed header rewriting warnings
84: connect [..BS]: cumulative number of connection establishment attempts
85: reuse [..BS]: cumulative number of connection reuses
+ 86: cache_lookup [.FB.]: cumulative number of cache lookups
+ 87: cache_hits [.FB.]: cumulative number of cache hits
9.2) Typed output format