Question

A developer instruments a Lambda function with the AWS X-Ray SDK to help diagnose intermittent slow orders. The team wants to filter traces in the X-Ray console to find only requests where a specific customer tier equals 'premium' and where a downstream call exceeded a threshold. The developer currently attaches the customer tier and timing data using subsegment metadata, but cannot filter traces by these values. What is the correct way to make these values usable in X-Ray filter expressions?

Accepted Answer

Record the customer tier and threshold flag as X-Ray annotations, because annotations are indexed and can be used in filter expressions.

Answer

Continue using metadata but increase the sampling rate so more traces are captured and become searchable.

Answer

Move the values into CloudWatch Logs with structured logging and query them with Logs Insights instead of X-Ray.

Answer

Store the values as segment metadata rather than subsegment metadata so X-Ray indexes them automatically.