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v0.1.1 — Apr 27, 2026

New
  • Sidekiq job metrics — sidekiq.job.count, sidekiq.job.duration, sidekiq.job.error.count emitted automatically via server middleware when Sidekiq is present
  • Database connection pool metrics — db.connection_pool.size/busy/idle/waiting polled every 30 s from ActiveRecord::Base.connection_pool
  • Tracelit.metrics.gauge — point-in-time metric instrument for custom gauges
Improvements
  • Rails log forwarding now uses the ActiveSupport::BroadcastLogger API (Rails 7.1+) and falls back gracefully to Logger::Formatter wrapping on older versions
  • config.resource_attributes hash is now deep-merged on top of the default OTel resource so SDK attributes (service.name, service.version) are never overwritten
  • All HTTP server metrics now include controller and action as attributes when instrumented through Action Pack
Fixes
  • Fixed Tracelit.start! being called twice during Rails boot when both a Railtie and an explicit Tracelit.start! call were present — now idempotent
  • Fixed ErrorSpanProcessor not exporting spans when the parent sampler returned DROP for a span whose status was set to error via span.status=