a/a/_search?search_type=count
{
  "query": {
    "bool": {
      "must": [
        {
          "term": {
            "appType": "a"
          }
        }
      ],"must_not": [],"should": []
    }
  },"aggs": {
    "tag": {
      "terms": {
        "field": "ip","size": 10
      }
    }
  }
}