zio.metrics
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A Metric[In, Out]
represents a concurrent metric, which accepts updates of
type In
, which are aggregated to a stateful value of type Out
.
A Metric[In, Out]
represents a concurrent metric, which accepts updates of
type In
, which are aggregated to a stateful value of type Out
.
For example, a counter metric would have type Metric[Double, Double]
,
representing the fact that the metric can be updated with doubles (the amount
to increment or decrement the counter by), and the state of the counter is a
double.
There are five primitive metric types supported by ZIO:
- Counters
- Frequencies
- Gauges
- Histograms
- Summaries
The companion object contains constructors for these primitive metrics. All metrics are derived from these primitive metrics.
Attributes
- Companion:
- object
- Graph
- Supertypes
- Self type
A MetricKey
is a unique key associated with each metric. The key is based
on a combination of the metric type, the name and tags associated with the
metric, and any other information to describe a a metric, such as the
boundaries of a histogram. In this way, it is impossible to ever create
different metrics with conflicting keys.
A MetricKey
is a unique key associated with each metric. The key is based
on a combination of the metric type, the name and tags associated with the
metric, and any other information to describe a a metric, such as the
boundaries of a histogram. In this way, it is impossible to ever create
different metrics with conflicting keys.
Attributes
Attributes
- Companion:
- trait
- Graph
- Supertypes
- Self type
- MetricKeyType.type
A MetricLabel
represents a key value pair that allows analyzing metrics at
an additional level of granularity. For example if a metric tracks the
response time of a service labels could be used to create separate versions
that track response times for different clients.
A MetricLabel
represents a key value pair that allows analyzing metrics at
an additional level of granularity. For example if a metric tracks the
response time of a service labels could be used to create separate versions
that track response times for different clients.
Attributes
- Graph
- Supertypes
Attributes
- Companion:
- object
- Graph
- Supertypes
Attributes
- Companion:
- class
- Graph
- Supertypes
- Self type
- MetricPair.type
A MetricState
describes the state of a metric. The type parameter of a
metric state corresponds to the type of the metric key (MetricKeyType). This
phantom type parameter is used to tie keys to their expected states.
A MetricState
describes the state of a metric. The type parameter of a
metric state corresponds to the type of the metric key (MetricKeyType). This
phantom type parameter is used to tie keys to their expected states.
Attributes
- Companion:
- object
- Graph
- Supertypes
- Known subtypes
Attributes
- Companion:
- trait
- Graph
- Supertypes
- Self type
- MetricState.type
A PollingMetric[Type, Out]
is a combination of a metric and an effect that
polls for updates to the metric.
A PollingMetric[Type, Out]
is a combination of a metric and an effect that
polls for updates to the metric.
Attributes
- Companion:
- object
- Graph
- Supertypes
- Self type
Attributes
- Companion:
- trait
- Graph
- Supertypes
- Self type
- PollingMetric.type