[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-09-05(UTC)"],[],[],null,["# Key Visualizer overview\n\nWhat is Key Visualizer?\n-----------------------\n\nKey Visualizer helps you analyze your Spanner data access patterns.\n\nUnderstanding data access patterns is critical for following\n[schema design best practices](/spanner/docs/schema-design) and avoiding hotspots. Hotspots\noccur when too many requests are sent to the same server which saturates the\nresources of the server and potentially causes high latencies.\n\nWith Key Visualizer, you can diagnose common issues that cause hotspots. It\ngenerates visual reports to show how data is accessed in your database. In\naddition, you can identify usage patterns over time that are difficult to\nunderstand otherwise.\n\nWhat's next\n-----------\n\n- Learn how to [Access Key Visualizer](/spanner/docs/key-visualizer/getting-started).\n- Find out how to [use Key Visualizer to explore a heatmap](/spanner/docs/key-visualizer/exploring-heatmaps).\n- Understand the [patterns you might see in Key Visualizer\n heatmaps](/spanner/docs/key-visualizer/patterns).\n- Read about the [metrics you can view in a heatmap](/spanner/docs/key-visualizer/metrics).\n- Learn about other tools for [monitoring an instance](/spanner/docs/monitoring-instance)\n- [Watch a video](https://www.youtube.com/watch?v=3QHGhnHx5HQ) about using Key Visualizer to diagnose an issue in a similar product."]]
