[source, ruby]
----
response = client.index(
  index: 'metrics_index',
  id: 1,
  body: {
    'network.name' => 'net-1',
    latency_histo: {
      values: [
        0.1,
        0.2,
        0.3,
        0.4,
        0.5
      ],
      counts: [
        3,
        7,
        23,
        12,
        6
      ]
    }
  }
)
puts response

response = client.index(
  index: 'metrics_index',
  id: 2,
  body: {
    'network.name' => 'net-2',
    latency_histo: {
      values: [
        0.1,
        0.2,
        0.3,
        0.4,
        0.5
      ],
      counts: [
        8,
        17,
        8,
        7,
        6
      ]
    }
  }
)
puts response

response = client.search(
  index: 'metrics_index',
  size: 0,
  body: {
    aggregations: {
      total_requests: {
        value_count: {
          field: 'latency_histo'
        }
      }
    }
  }
)
puts response
----
