connection-pooling

I am trying to implement the concept of ConnectionPooling in Oracle using Jetty server. I have tried the following that I saw on a tutorial. It is working if I deploy using Tomcat server, but Jetty seems to be giving me an unusual error . Details are below - I have a class called TestServlet.java defined as - import java.io.IOException; import java.sql.*; import javax.naming.*; import javax.servlet.*; import javax.servlet.annotation.WebServlet; import javax.servlet.http.*; import javax.sql.DataSource; @SuppressWarnings("serial") @WebServlet("/TestServlet") public class TestServlet extends

I moved my project to HikariCP . Everything is going fine so far, but with one setting I'm having trouble. It's the .setMaxLifetime(30*1000) setting in HikariConfig object. I get this warning WARN com.zaxxer.hikari.HikariConfig - maxLifetime is less than 120000ms, using default 1800000ms. I know that they recommend not setting is that low as I am trying to. But Unfortunately due to circumstances that I can not change, every TCP connection that is open longer than 50 secods will be terminated in our production environment. i don't know your HikariCP Version, but in the version 2.2.4 you will

Working with the Node-MySql module: From my understanding multithreaded programs benefit more from pooling connections than singlethreaded ones. Is this true? And if this logic proves true, what scenario is connection pooling beneficial in a Node.JS application? Jonathan Lonowski Whether single or multithreaded, pooling can still be beneficial in allowing open connections to be reused rather than being closed only to open another immediately after: When you are done with a connection, just call connection.release() and the connection will return to the pool, ready to be used again by someone

We've been having this issue in prod for the past few weeks. Every few days, the number of connections to our compose.io Mongo db spikes to nearly 5000, which is the connection limit. There doesn't appear to be any specific trigger for this behavior. The logs look like this: 2018-08-14T00:02:32.000+00:00 aws-eu-west-1-portal.9.dblayer.com mongodb320: syslogd.25 | 212.233.54.22 65418 [13/Aug/2018:23:57:32.327] ft_mongodb/1: Timeout during SSL handshake 2018-08-14T00:02:32.000+00:00 aws-eu-west-1-portal.9.dblayer.com mongodb320: syslogd.25 | 212.233.54.22 65247 [13/Aug/2018:23:57:32.343] ft

during beta testing we discovered connection pooling error messages . Therefore I have been going through the code and closing down the SqlDataReader objects wherever they have been left unclosed. What I need to know is how to close a datareader (or if there is a need at all to close) that is specified in the SelectStatement attribute of the SqlDataSource or ObjectDataSource tags. Could there be connection leak if they are not handled? Thanks in advance ! I tend to use the "using" keyword, especially when dealing with opening and closing connections to a database. "using" is a shortcut to the

Note: I know about this thread but it is quite old and moreover, the solution did not work for me. I am using App Engine along with Cloud SQL and I would like to share a pool of open connections between all of the application's current users. I have tried several connection pool implementations and they all work perfectly with the local development server, however, when deployed to the cloud, they fail. I suppose that the reason is App Engine's restricted "sandbox" environment. Does anyone know about JDBC connection pool working on App Engine? Apache Commons DBCP ... Caused by: java.lang