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The Berkeley TRee DataBase is a high performance time series database designed to support high density data storage applications.

We are now doing binary and container releases with (mostly) standard semantic versioning. The only variation on this is that we will use odd-numbered minor version numbers to indicate and unstable/development release series. Therefore the meanings of the version numbers are:

  • Major: an increase in major version number indicates that there is no backwards compatibility with existing databases. To upgrade, we recommend using the migration tool.
  • Minor: minor versions are compatible on-disk, but may have an incompatible network API. Therefore while it is safe to upgrade to a new minor version number, you may need to upgrade other programs that connect to BTrDB too. Furthermore, odd-numbered minor version numbers should be considered unstable and for development use only, patch releases within an odd numbered minor version number may not be compatible with eachother.
  • Patch: patch releases on an odd numbered minor version number are not necessarily compatible with eachother in any way. Patch releases on an even minor version number are guaranteed to be compatible both in the disk format and in network API.

While using odd-numbered versions to indicate development releases is a somewhat archaic practice, it allows us to use our production release system for development, which reduces the odds that there is a discrepancy between the well-tested development binaries/containers and the subsequently released production version. Note that we will flag all development releases as "pre-release" on github.

The main distribution of BTrDB v4 is smartgridstore which is basically BTrDB packaged for deployment on Kubernetes, along with some (optional) utilities for working with synchrophasors. You can follow the installation guide on

If you are interested in deploying BTrDB, please file an issue on this repository so we can get an idea for what type of deployments we should focus on supporting. is focused on very large city or country-scale data aggregation from smart grid devices, but BTrDB can support other use cases.

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