@Data source connection pool exhaustion caused by transactional abuse

Get into hmp Regret to enter the observation map of the overview first , This page will be visited every minute 20+ Interface ,durid、oracle Such as the database , And back-end access has increased @Transactional Annotations （ This annotation adds a transaction to the interface , Before each visit, you will get mysql The connection pool , Only when the interface returns yes, it will be released ）, Because the query of the interface takes too long and is accessed frequently , Easy to fill the connection pool , It makes other users unable to access mysql database .

@override
@transactional
public Map<String,Object> getAcMap(Map<String,String> map) throws ParseException {
    
	.....
}

@transactional Use points ：
1. There is no need to add @transactional annotation
（1） It is not an interface to operate the database
（2） It's just an interface for querying the database
（3） Interface that takes a long time to operate the database
2. The query function of the same database should be combined in one interface