# `Prometheus.Contrib.HTTP`
[🔗](https://github.com/prometheus-erl/prometheus.ex/blob/v5.1.0/lib/prometheus/contrib/http.ex#L1)

HTTP instrumentation helpers

# `microseconds_duration_buckets`
*macro* 

Returns default microseconds buckets for measuring http requests duration:

    iex(6)> Prometheus.Contrib.HTTP.microseconds_duration_buckets
    [10, 25, 50, 100, 250, 500, 1000, 2500, 5000, 10000, 25000, 50000,
     100000, 250000, 500000, 1000000, 2500000, 5000000, 10000000]

# `status_class`
*macro* 

Returns class of the http status code:

    iex(7)> Prometheus.Contrib.HTTP.status_class(202)
    ~c"success"

Raises `Prometheus.InvalidValueError` exception if `code` is not a positive integer.

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*Consult [api-reference.md](api-reference.md) for complete listing*