Time-series metrics for Ruby. Track anything (signups, revenue, job durations) using the database you already have. No InfluxDB. No TimescaleDB. Just one call and your existing Postgres, Redis, MongoDB, MySQL, or SQLite.

Part of the Trifle ecosystem. Also available in Elixir and Go.

• No new infrastructure. Uses your existing database. No dedicated time-series DB to deploy, maintain, or pay for.
• One call, many dimensions. Track nested breakdowns (revenue by country by channel) in a single track call. Automatic rollup across dynamic time granularities (1m, 6h, 1d, etc.).
• Library-first. Start with the gem. Add Trifle App dashboards, Trifle CLI terminal access, or AI agent integration via MCP when you need them.

gem 'trifle-stats'

Trifle::Stats.configure do |config|
  config.driver = Trifle::Stats::Driver::Postgres.new(ActiveRecord::Base.connection)
  config.granularities = ['1h', '1d', '1w', '1mo']
end

Trifle::Stats.track(
  key: 'orders',
  at: Time.now,
  values: {
    count: 1,
    revenue: 49_90,
    revenue_by_country: { us: 49_90 },
    revenue_by_channel: { organic: 49_90 }
  }
)

Trifle::Stats.values(
  key: 'orders',
  from: 1.week.ago,
  to: Time.now,
  granularity: :day
)
#=> { at: [Mon, Tue, Wed, ...], values: [{ "count" => 12, "revenue" => 598_80, ... }, ...] }

• Dynamic time granularities. Use any interval like 1m, 10m, 1h, 6h, 1d, 1w, 1mo, 1q, 1y.
• Nested value hierarchies. Track dimensional breakdowns in a single call.
• Series operations. Aggregators (sum, avg, min, max), transponders, formatters.
• Buffered writes. Queue metrics in-memory before flushing to reduce write load.
• Driver flexibility. Switch backends without changing application code.

Every track/assert/assort call is buffered by default. The buffer flushes on an interval, when the queue reaches a configurable size, and on shutdown (SIGTERM/at_exit).

Trifle::Stats.configure do |config|
  config.driver = Trifle::Stats::Driver::Redis.new(Redis.new)
  config.buffer_duration = 5   # flush every ~5 seconds
  config.buffer_size = 100     # ...or sooner when 100 actions are enqueued
  config.buffer_aggregate = true
end

Set buffer_enabled = false for synchronous write-through.

Full guides, API reference, and examples at docs.trifle.io/trifle-stats-rb

Trifle::Stats is the tracking layer. The ecosystem grows with you:

Bug reports and pull requests are welcome on GitHub at https://github.com/trifle-io/trifle-stats.

The gem is available as open source under the terms of the MIT License.