The InfluxData team has released a technical preview of Flux, a new query language and engine for time series data, which enables users to perform math across measurements. The first example demonstrates how to calculate the batch size of lines written to the database per request by filtering data from the telegraf database, isolating write requests and points, joining them together, and calculating the mean batch size over a specified time range. A second example illustrates how to monitor the efficiency of a heat exchanger over time by collecting temperature readings from four different sensors, applying join and map functions to calculate the efficiency across all measurements, and visualizing the results using Chronograf's Flux editor. The new language provides features such as pipes for readability, joins with suffixes, and Map function for complex calculations, enabling users to perform advanced data analysis and visualization tasks.