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Guarantees for relating data within Langfuse

• Finding a Trace based on an observation Linear
  • Traces can occur earlier than an observation.
  • 96% of observations.start_time occur 2 mins later than the trace.timestamp
  • There is a very large long-tail. Hence we will use a 2-day (2880 min) look back for now.
• Finding an Observation based on a Trace Linear
  • Observations have a very high likelihood of happening after the trace.
  • 97% of traces.timestamp occur 2 mins earlier than the observation.start_time
  • We will maintain a 1 hour cutoff for now.
• Finding traces/observations based on a Score timestamp
  • For scores we have a very high likelihood of happening after the trace / observation.
  • We maintain a 1 hour cutoff for now.