Giraffe is an open source React-based visualization library used in InfluxDB v2 UI, employing clever algorithms to handle high volume data, with a tutorial demonstrating its use with the JavaScript Client to build a line graph in the browser. The tutorial assumes familiarity with the JavaScript Client and knowledge of querying InfluxDB, and provides a simple static site to visualize RAM usage from a local machine. The library's valueAxisLabel parameter is used to specify units for the visualization, and configures layers such as x and y values, colors, and scale types. The community is encouraged to share thoughts and feedback on using Giraffe in their projects.