Prometheus promql

PromQL is prometheus's query language.
You can query prometheus from

• HTTP API
• in the UI's graph?

Documentation

official docs	https://prometheus.io/docs/prometheus/latest/querying/basics/
official examples	https://prometheus.io/docs/prometheus/latest/querying/examples/
re2 (regex engine)	https://github.com/google/re2/wiki/Syntax

Datatypes

Strings

// string
"foo"
`foo`

// string-literal
'foo\nbar'

Floats

23
-2.43
3.4e-9
0x8f
-Inf
NaN