修改文档

xtrabackup.md

@@ -68,6 +68,11 @@ systemctl start mysqld
 ```
 
 
+## 备份压缩
+```
+xtrabackup  --user=root --password=874eded4026f572f --databases=sql_seee_btcahol --tables-exclude=sql_seee_btcahol.failed_jobs  --socket=/tmp/mysql.sock --backup --target-dir=/u01/bak/db02_sql_seee_btcahol_`date +%F` --parallel=8 --compress --compress-threads=2 
+```
+
 ## 参考网址
 
 [mysql中xtrabackup全量备份/增量备份及恢复](https://www.jb51.net/database/327463ae4.htm)