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Diagnosing sync latency#420

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bean1352 wants to merge 6 commits intomainfrom
diagnosing-sync-latency
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Diagnosing sync latency#420
bean1352 wants to merge 6 commits intomainfrom
diagnosing-sync-latency

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@bean1352 bean1352 commented May 4, 2026

  • New Diagnosing Sync Latency section in troubleshooting.mdx. Walks through how to measure end-to-end latency with timestamps in the data, then how to narrow it down per stage (source database to service, service to client), with the usual culprits at the bottom
  • New Correlating User Reports to Sync Sessions subsection in monitoring-and-alerting.mdx, documenting the Sync stream started and Sync stream complete log events and what fields they carry
  • Links forward to the new /maintenance-ops/replication-lag page for source-specific guidance on replication lag

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mintlify Bot commented May 4, 2026

Preview deployment for your docs. Learn more about Mintlify Previews.

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powersync 🟢 Ready View Preview May 4, 2026, 1:28 PM

…as `user_agent`, `rid`, and `operation_counts`
…to emphasize the distinction between downstream and upstream latency.
@bean1352 bean1352 requested a review from michaelbarnes May 5, 2026 12:54
@bean1352 bean1352 marked this pull request as ready for review May 5, 2026 12:54
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