https://www.jb51.net/article/253704.htm我把mysql的最大连接数由默认的151改成2000了，不知道能不能解决问题。
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Your MariaDB connection id is 8
Server version: 10.5.22-MariaDB MariaDB Server
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MariaDB [(none)]> show variables like "max_connections";
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 2000 |
+-----------------+-------+
1 row in set (0.001 sec)
