> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tracelit.io/llms.txt
> Use this file to discover all available pages before exploring further.

# v0.1.0 — Apr 20, 2026

> Ruby SDK v0.1.0 — Apr 20, 2026

# v0.1.0 — Apr 20, 2026

**Initial release**

First public release of the Tracelit Ruby SDK:

* `Tracelit.configure` block + Railtie for zero-touch Rails setup
* `Tracelit.start!` for Sinatra and Rack
* `Tracelit.tracer` — `OpenTelemetry::Trace::Tracer` for manual spans
* `Tracelit.metrics` — Counter, Histogram, Gauge helpers
* Full `opentelemetry-instrumentation-all` auto-instrumentation: Rails, ActiveRecord, Action View, Rack, Net::HTTP, Faraday, Redis, Sidekiq, Bunny, gRPC
* Automatic HTTP server metrics via `ActiveSupport::Notifications`
* Process RSS memory poller (60 s interval)
* Rails log forwarding with `trace_id` / `span_id` correlation
* `ErrorAlwaysOnSampler` + `ErrorSpanProcessor` — errors always exported
* `config.enabled` / `TRACELIT_ENABLED=false` for test environments
* Ruby ≥ 3.0, MIT license