问题
I developed a web dashboard that needs to display real-time information (ASP.NET C #). Usually I use SQLServer, so the combination SignalR + SQLDependency works very well. But now I have to use a MariaDB / MySQL database and I can not find a library equivalent to SQLDependency. Is there a "trick" for notifying a change in a database?
I found this library : https://www.devart.com/dotconnect/mysql/docs/Devart.Data.MySql~Devart.Data.MySql.MySqlDependency.html but it's not free ...
回答1:
In MySQL, you could potentially utilize a trigger and a user-defined function (UDF).
Another option would be MySqlDependency, however I believe that would require a purchased driver:
https://dev.mysql.com/doc/refman/8.0/en/create-trigger.html
https://www.devart.com/dbx/mysql/
来源：https://stackoverflow.com/questions/51292906/sqldependency-on-a-mariadb-mysql-database