The previous recipe describes an aggregation type that can be very useful if buckets must be computed on fixed terms or on a limited number of items. Otherwise, it's often required to return the buckets aggregated in ranges: the range aggregations meet this requirement. Commons scenarios are as follows:
Price range (used in shops)
Size range
Alphabetical range
You need an up-and-running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe in Chapter 2, Downloading and Setup.
To execute curl via the command line, you need to install curl for your operative system.
To correctly execute the following command, you need an index populated with the chapter_08/populate_aggregations.sh script available in the online code.
