InfluxDB data schema

InfluxDB data elements are stored in time-structured merge tree (TSM) and time series index (TSI) files to efficiently compact stored data.

InfluxDB also provides a tabular data schema that includes the following:

The tabular data schema is used for the following:

Annotation rows

Annotation rows describe column properties, for example:

  • #group
  • #datatype
  • #default

Header row

The header row defines column labels that describe data in each column, for example:

  • table
  • _time
  • _value
  • _field
  • _measurement
  • tag key names (without underscore prefix): tag-1, tag-2

Data rows

Each data row contains the data specified in the header row for one point.

Other columns

In addition to the columns in each data row (specified in the header row), the following columns are optional:

  • annotation
  • result
  • table

Group keys

Determine the contents of output tables in Flux by grouping records that share common values in specified columns. Learn more about grouping your data with Flux.

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Linux Package Signing Key Rotation

All signed InfluxData Linux packages have been resigned with an updated key. If using Linux, you may need to update your package configuration to continue to download and verify InfluxData software packages.

For more information, see the Linux Package Signing Key Rotation blog post.