## End of Exercises

In this lab, you explored the key mechanisms for controlling TiDB cluster behavior: TiDB system variables and TiDB configuration file parameters. You practiced modifying these settings to understand their impact on cluster operations.

Additionally, you learned about the four categories of TiDB server system variables, classified by their effective scope, which helps in managing configurations at different levels.

By completing these exercises, you've gained hands-on experience in changing TiDB configurations, a crucial basic skill for optimizing performance and behavior in a production environment.

- For a complete list of TiDB system variables, refer to the documentation: [System Variables](https://docs.pingcap.com/tidb/stable/system-variable-reference/)

- For a complete list of TiDB configuration parameters, refer to:
  - [Placement Driver Configurations](https://docs.pingcap.com/tidb/stable/pd-configuration-file/)
  - [TiDB Server Configurations](https://docs.pingcap.com/tidb/stable/tidb-configuration-file/)
  - [TiKV Server Configurations](https://docs.pingcap.com/tidb/stable/tikv-configuration-file/)
  - [TiFlash Server Configurations](https://docs.pingcap.com/tidb/stable/tiflash-configuration/)