cachestats feature request

[gkissand]

support for exporting in views _default and views zone the following
"cachestats":{
"CacheHits":1504918921,
"CacheMisses":248,
"QueryHits":1643075178,
"QueryMisses":2000999100,
"DeleteLRU":0,
"DeleteTTL":11851633,
"CacheNodes":2896891,
"CacheBuckets":1048576,
"TreeMemTotal":582267693688,
"TreeMemInUse":1410695525,
"TreeMemMax":1410699788,
"HeapMemTotal":5149852736,
"HeapMemInUse":37798976,
"HeapMemMax":40158272
},

[HesaMtiPu]

@gkissand any update ???
I am monitoring these metrics by making changes in the code, if you want to review the code, I will share it.