Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Apache Tomecat 5.5 threading Question

Posted on 2007-03-28
1
208 Views
Last Modified: 2010-03-17
I am new to Apache Tomcat and want to make sure that I understand the threading model used by relase 5.5 and 6.0.

Here is a little background on the current design that I have and the concerns that I have.  

What I am attempting to do is build a dispatcher servlet that will forward the HTTP request to a servlet or a JSP page that contains the logic to complete the request.  Most of the servlets will need to contact remote web resources before a response can be generated by to the user.  These remote web resources may be busy or down thus causing the servlet that is handling the request to block.  Since I am not that familiar with Tomcat I do not know how this will be handled.  If another use sends a request into the Tomcat server will the Application Server generate another instance of the Java Dispatcher class or will the request get blocked until first request completes.  Also, does the forwarding of a request to another servlet free the forwarding servlet up to process more requests.

Sorry if these questions/concerns seem basic, but since I am new to Tomcat and Servlets I want to make sure that I understand what is happening under the covers.  This could affect my design and implementation.  I would prefer to figure that out before I get any further in my design and implemenation.
0
Comment
Question by:traemak
1 Comment
 
LVL 30

Accepted Solution

by:
Mayank S earned 250 total points
ID: 18808983
>> I am not that familiar with Tomcat I do not know how this will be handled.

That's fine - the threads will remain blocked until the operation is completed.

>> If another use sends a request into the Tomcat server will the Application Server generate another instance of the Java Dispatcher class or will the request get blocked until first request completes.  

It will be handled by the same servlet in another thread, unless your servlet implements the SingleThreadModel interface.

>> Also, does the forwarding of a request to another servlet free the forwarding servlet up to process more requests.

Same as my answer to the previous. Servlets can be multi-threaded.
0

Featured Post

Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction As you’re probably aware the HTTP protocol offers basic / weak authentication, which in combination with the relevant configuration on your web server, provides the ability to password protect all or part of your host.  If you were not…
ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question