Bucket aggregations

Similar to metric aggregations, bucket aggregations are also categorized into two forms: Single buckets that contain only a single bucket in the response, and multi buckets that contain more than one bucket in the response.

The following are the most important aggregations that are used to create buckets:

• Multi bucket aggregations

  • Terms aggregation

  • Range aggregation

  • Date range aggregation

  • Histogram aggregation

  • Date histogram aggregation

• Single bucket aggregation

  • Filter-based aggregation

  Note

  We will cover a few more aggregations such as nested and geo aggregations in subsequent chapters.

Buckets aggregation response formats are different from the response formats of metric aggregations. The response of a bucket aggregation usually comes in the following format:

"aggregations": {

      "aggregation_name": {
         "buckets": [
            {
               "key": value,
               "doc_count": value
            },
            ......
         ]
      }
   }

Note

All the bucket...