# Write Slow Troubleshooting Ideas (C)
+ Troubleshoot complex problems


![left](./student-guide/diagram/26-Write-slow-troubleshooting-ideas-03-01.png)
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- Complex issues
  - Complex atypical problems, usually locating requires us to check the cluster step by step according to the read process and corresponding Grafana monitoring. In this way, we find the root cause of the problem and then consider how to solve it.