Document pgx driver latency caveat with full DBM propagation mode - #38534
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Document pgx driver latency caveat with full DBM propagation mode#38534pierreln-dd wants to merge 1 commit into
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Add a callout to the Go tab of Connect DBM and APM warning that enabling full propagation mode with the pgx driver can force statement re-planning and increase query latency, since pgx caches prepared statements by query text and full mode injects unique trace context per query. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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What does this PR do? What is the motivation?
Adds a callout to the Go tab of Connect DBM and APM warning about a latency regression when using the
pgxdriver withfullpropagation mode.pgxcaches prepared statements by query text. Becausefullmode injects unique trace context into each query, it defeats this cache and forces the database to re-plan every query. Recommendsservicemode as a workaround.Merge instructions
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