Documentation

Downsample data with notebooks

Downsample data to reduce the overall disk usage as data collects over time. Learn how to create a notebook that downsamples data—walk through the following example to create a notebook that does the following:

  • Inputs InfluxDB Cloud demo data from the Website Monitoring Bucket
  • Downsamples data by aggregating data within windows of time with a Flux script
  • Outputs downsampled data to a bucket

Requirements

Downsample data with a notebook

  1. Create a new notebook (see Create a notebook).
  2. Add a Metric Selector cell to select a bucket to query data from:
  • In the Choose a bucket dropdown list, select Website Monitoring Bucket.
  • Select the response_time field.
  • Select the mean function from the aggregate selector in the upper-right.
  1. Add a Downsample cell to bring in data from the previous cell and downsample it.
  • Select an aggregate function from the Apply aggregate dropdown menu.
  • Enter a window period.
  1. Add an Output to Bucket cell, and then select the destination bucket for your downsampled data.
  2. Add a Markdown cell to add a note to your team about what this notebook does. For example, the cell might say, “Downsample to one value per hour so we can do week-over-week performance. Sending data to downsample bucket.”
  3. Click Preview in the upper left to verify that your notebook runs and preview the output.
  4. Run your notebook:
  • Click Run from the Preview dropdown list to run the notebook and write to the output bucket a single time.
  • To write continuously, click Export as Task in the upper right corner of the Output to Bucket cell. For details about working with tasks, see Manage tasks.

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