Open Source Database Connection Pool Open Source Database Connection Pool Apache DBCP Example

\| Interview Questions on Java \|	\| Coding Tips on Java \|	\| Your Questions on Java \|	\| EJB \|	\| Servlet and JSP \|	\| Hibernate Tutorial \|	\| Spring Tutorials \|	\| Java Design Patterns \|	\| J2EE Design Patterns \|	\| Apache ANT \|
\| Apache DBCP \|	\| Struts Struts 2 Example Tutorial \|	\| Apache Beehive JdbcControl \|	\| Apache Log4j \|	\| Apache Axis \|	\| Open Source Project Ideas \|	\| Web Technology \|	\| J2EE Technology \|	\| Java News \|	\| Spring Hibernate Example \|
\| JavaScript Tips \|

Struts Tutorials: Struts2 Tag CheckBoxList
, Checkbox, Iterator, IF Struts2 Tag Library Example Struts2 Tiles Example Struts2 Tiles I18N Example Struts2 Questions Struts Tiles I18N Example Struts Eclipse MVC Struts2 Tags Struts2 Example and Tutorial Struts MVC Struts2 Validation
Hibernate Tutorials: Hibernate Case Study Class Hierarchy Persist Example Using Hibernate Interceptor Hibernate Questions with Answer Hibernate Many-to-Many Mapping Example Hibernate one-to-many Mapping Example Hibernate and ORM tools Spring Hibernate Example Hibernate SessionFactory Example Hibernate Mapping Class Hierarchy Hibernate Questions Hibernate SessionFactory Questions Spring Hibernate Example: Spring Hibernate Case Study

Looking for Open Source 
Connection Pool for Database
connections. One solution 
is Apache Commons DBCP, 
and Apache Commons Pool.

These two are very much   
required for implementing
Connection Pooling for Database,
of course these frameworks 
require a JDBC driver and some
type of mechanism for handling 
many connection requests at 
times when scalable is required
for large number of users and 
with limited database connections
licenses available.

There is a situation I have come across recently is handling huge amount of database interactions, to the tune of hundred thousands with a maximum database connections available are 5. I was trying out Apache DBCP and Pools for a scalable pool of connections for database, but I was finding it difficult to have a traffic policing for connection handler, so as to holding all requests on wait till any of the database connections already in use, to be returned back to the connection pool. One solution I tried out with some degree of success is by using ArrayBlockingQueue from "java.util.concurrent" package of JDK 5.0. How the entire picture looks like? It is as follows: At application start up, all five database connections are queued up in ArrayBlockingQueue, and all request for Database connections should come to this queue, and on emptying this queue, all subsequent database connection request should wait/ block, till any database connection comes back to the queue.

Terms of Use and Disclaimer : This web site provides some of the information about various technologies, example code, tips, tutorials etc. Like any printed materials, content of these pages may become out of date over a period of time. Therefore all visitor/users of this web site are requested/advised to refer to the originating parties/sources for the latest changes and happenings for detailed information. This information is not intended to be a substitute for the original reference provided by the originating parties/sources. By accessing and using this website in any ways, including, without limitation, browsing the website pages, using any information, using any content and/or downloading any materials, you agree to and are bound by the terms of use described in this page and Usage Terms and Conditions. If you do not agree to all of the terms and conditions contained in the terms of use described in this page and Usage Terms and Conditions, do not use this website in any manner. If you are using the website on behalf of your employer, you represent that you are authorized to accept these Terms of Use on your employer's behalf. All Trademarks are property of their respective owner. Appropriate measure is being taken for providing accurate and up-to-date information but like any printed materials, these blog(s)/contents may eventually be outdated one day, so if you are using any of these information, please refer original content/documentation from respective sources. And under no circumstances shall the Author of these contents and/or this web site be liable for any loss, damage, expense incurred or suffered which is claimed to have occurred because of usage of the contents of this web site. If you have any questions/queries/feedback/suggestions then please write to this web site owner at contact.