Declarative DSL for defining metric storage tiers, retention, and rollup schedules.

Example

defmodule MyApp.MetricSchema do
  use TimelessMetrics.Schema

  raw_retention {7, :days}

  tier :hourly,
    resolution: :hour,
    aggregates: [:avg, :min, :max, :count, :sum, :last],
    retention: {30, :days}

  tier :daily,
    resolution: :day,
    aggregates: [:avg, :min, :max, :count, :sum, :last],
    retention: {365, :days}

  tier :monthly,
    resolution: {30, :days},
    aggregates: [:avg, :min, :max, :count, :sum],
    retention: :forever
end

Then pass it to TimelessMetrics:

{TimelessMetrics, name: :metrics, data_dir: "/data", schema: MyApp.MetricSchema}