Timelion is the latest addition to the Kibana UI with the introduction of Elastic Stack. Timelion is used for analysis and visualizations of time-series data. It provides the ability to combine multiple data sources into a single visualization and gives a range of mathematical calculations that can be used, such as cumulative sum, derivative, moving averages, and so on.
Timelion is present in the left-pane of the Kibana UI between icons of Dashboard and Dev Tools. It has its own language and expressions when using it, which makes it difficult to start with. However, it has a great built-in documentation and tutorial to guide you on how to start using Timelion.
When you click on Timelion, you will be greeted with a screen similar to the following screenshot:
In the preceding screenshot, you see that there has been a default expression that has already been added, .es(*),which means it is querying all the data present in Elasticsearch within all the indices. It represents...