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John,
On 7/25/20 11:25, John Dale wrote:
> We've wrapped my connection pool interface in a Factory. Can you
> confirm how the current request's thread is used by JDBC
> connection pooling to MySQL?
Are you using Tomcat to manage your DataSource resource? For example:
Context ctx = new InitialContext();
DataSource ds =
(DataSource)ctx.lookup("java:/comp/env/jdbc/myDataSource");
Connection conn = ds.getConnection();
?
If you have written your own datasource factory, then when you call
ctx.lookup(), you will be getting the DataSource object returned by
your factory when your web application starts.
If you make calls to DataSource.getConnection,
Connection.prepareStatement, etc. everything is done in the current
thread. If you use Tomcat's tomcat-pool or DBCP2, the only things that
happen outside of the current request-processing thread are the
background maintenance tasks such as checking for abandoned connections.
Does that answer your question?
- -chris
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