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add backup faq for flashback (#12312) (#12485)
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ti-chi-bot committed Feb 14, 2023
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Expand Up @@ -8,7 +8,9 @@ aliases: ['/tidb/stable/pitr-troubleshoot/','/tidb/stable/pitr-known-issues/']

This document lists the frequently asked questions (FAQs) and the solutions of TiDB Backup & Restore (BR).

## Performance issues of backup and restore
## What should I do to quickly recover data after mistakenly deleting or updating data?

TiDB v6.4.0 introduces the flashback feature. You can use this feature to quickly recover data within the GC time to a specified point in time. Therefore, if misoperations occur, you can use this feature to recover data. For details, see [Flashback Cluster](/sql-statements/sql-statement-flashback-to-timestamp.md) and [Flashback Database](/sql-statements/sql-statement-flashback-database.md).

## In TiDB v5.4.0 and later versions, when backup tasks are performed on the cluster under a heavy workload, why does the speed of backup tasks become slow?

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