Highlighting results
Elasticsearch performs a good job of finding matching results in big text documents. It's useful for searching text in very large blocks. However, to improve user experience, you need to show users the abstract—a small portion of the text part of the document that has matched the query. The abstract is a common way to help users understand how the matched document is relevant to them.
The highlight functionality in Elasticsearch is designed to do this job.
Getting ready
You will need an up-and-running Elasticsearch installation, as described in the Downloading and installing Elasticsearch recipe of Chapter 1, Getting Started.
To execute these commands, any HTTP client can be used, such as Curl (https://curl.haxx.se/), Postman (https://www.getpostman.com/), or similar. I suggest using the Kibana console as it provides code completion and better character escaping for Elasticsearch.
To correctly execute the following commands...
