Discord Engineers Add Distributed Tracing to Elixir's Actor Model Without Performance Penalty

📰 InfoQ AI/ML

Discord engineers added distributed tracing to Elixir's actor model without performance penalty

advanced Published 28 Mar 2026
Action Steps
  1. Implement a custom Transport library to wrap messages with trace context
  2. Use dynamic sampling to handle large fanouts
  3. Optimize CPU usage by skipping unsampled traces
  4. Filter context before deserialization to reduce overhead
Who Needs to Know This

This benefits software engineers and DevOps teams as it allows for efficient tracing and monitoring of complex systems without impacting performance. The approach can be applied to large-scale distributed systems

Key Insight

💡 Distributed tracing can be added to Elixir's actor model without significant performance penalty using custom optimizations

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💡 Discord engineers add distributed tracing to Elixir's actor model without performance hit
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