Metric names
All metric names must begin with a letter, an underscore, or a colon. No metric names may begin with lightstep.
.
Beyond the first character, metric names may contain any of the following characters:
- Letters:
a-z
,A-Z
- Numbers:
0-9
- Symbols:
.
/
_
-
:
If metric names don’t follow these requirements, they will be rejected.
Metric kinds
Lightstep Observability supports gauges and two types of counters - deltas and cumulative, known as their kind. If when first ingested a metric name doesn’t match the kind recorded, it will be rejected and an error will be sent back to the client.
Lightstep supports:
- Gauges
- Deltas
- Cumulative
If you want to change a metric’s kind, contact Customer Success at support@lightstep.com.
Attributes
There are currently no restrictions on attribute keys or values.