How to handle Sleep Connection in ShardingSphere-Proxy

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Hello. I am currently using ShardingSphere-Proxy as a Djnago App connected to two Mysql DBs. However, after connecting ShardingSphere-Proxy in Django, it was not closed properly, so I found that the number of connections in Sleep state in ShardingSphere-Proxy gradually increased. To solve this, I wrote a code that explicitly closes the connection in Django, but I wondered if ShardingSphere-Proxy would add a function that closes the connection after a certain amount of time, such as Mysql's wait_time. ref https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_wait_timeout

Or, I wonder if it is possible to handle Sleep Connection in ShardingSphere-Proxy.

Please let me know in the comments if there's any information I've misunderstood.