Network issues
Network performance issues, such as limited bandwidth, packet loss, and connection instability, can severely impact database performance by slowing query response times and leading to retriable errors like timeouts.
Diagnostics
To diagnose network issues, use the healthcheck in the Embedded UI:
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Open the Embedded UI:
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Navigate to the Databases tab and click on the desired database.
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In the Navigation tab, confirm the required database is selected.
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Switch to the Diagnostics tab.
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Under the Network tab, apply the With problems filter.
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Use available third-party tools to monitor network performance metrics such as latency, jitter, packet loss, throughput, and others.
Recommendations
Contact the responsible party for the network infrastructure the YDB cluster uses. If you are part of a larger organization, this could be an in-house network operations team. Otherwise, contact the cloud service or hosting provider's support service.