如何正确管理MySQL连接？

Question

I am working on a server-application written in java. There are up to 30 client requests per second, for every request a specific mysql table entry gets updated.

All the server threads use a single mySQL Connection, they obtain it from a singleton class. Then the server thread creates a Statement and executes a update query.

Although I close all the created Statements after execution, the server stops updating the mySQL table after some hours.

What could be wrong? Is this setup a misconcept?

Answer 1

Perhaps, your connection was closed due to timeout. You can make use of Connection#isValid in order to verify whether or not your connection is still open.

You may take a look at Connection timeout for DriverManager getConnection . There are several good tips listed.

Also, You may consider the use of Connection Pool in your code. Apache commons is a good place to start.