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UIDs and TSUIDs

UIDs and TSUIDs

In OpenTSDB, when you write a timeseries data point, it is always associated with a metric and at least one tag name/value pair. Each metric, tag name and tag value is assigned a unique identifier (UID) the first time it is encountered or when explicitly assigned via the API or a CLI tool. The combination of metric and tag name/value pairs create a timeseries UID or TSUID.

UID

Types of UID objects include:

  • metric - A metric such as sys.cpu.0 or trades.per.second
  • tagk - A tag name such as host or symbol. This is always the "key" (the first value) in a tag key/value pair.
  • tagv - A t