"last seen time" for a term in elasticsearch -

i have mapping has host , timestamp (among other fields), , "last seen time" number of seen hosts. there better way first term facet on host field, range query (limit=1) on each of term values sorted in descending order?

a term stats facet bring min/max timestamp each host wouldn't it?

{     "query" : {         "match_all" : {  }     },     "facets" : {         "host_time_stats" : {             "terms_stats" : {                 "key_field" : "host",                 "value_field" : "timestamp"             }         }     } }