Query profiling

This feature is available from Elasticsearch 5.x or above via the profile API. This allows the user to track the time spent by Elasticsearch in executing a search or an aggregation.

Getting ready

You need an up-and-running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe in 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, you will need an index populated with the ch04/populate_kibana.txt commands, which is available in the online code.

How to do it...

The steps to profile a query are as follows:

1. From the command line, we will execute a search with the true profile set as follows:

GET /mybooks/_search
{
  "profile": true,
  "query": {
    "term": {
   ...