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Asked: 2026-05-13T19:27:37+00:00

My application makes Web Service requests; there is a max rate of requests the

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My application makes Web Service requests; there is a max rate of requests the provider will handle, so I need to throttle them down.

When the app ran on a single server, I used to do it at the application level: an object that keeps track of how many requests have been made so far, and waits if the current request makes it exceeds the maximum allowed load.

Now, we’re migrating from a single server to a cluster, so there are two copies of the application running.

  • I can’t keep checking for the max load at the application code, because the two nodes combined might exceed the allowed load.
  • I can’t simply reduce the load on each server, because if the other node is idle, the first node can send out more requests.

This is a JavaEE 5 environment. What is the best way to throttle the requests the application sends out ?

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  1. Editorial Team

    Since you are already in a Java EE environment, you can create an MDB that handles all requests to the webservice based on a JMS queue. The instances of the application can simply post their requests to the queue and the MDB will recieve them and call the webservice.

    The queue can actually be configured with the appropriate number of sessions that will limit the concurrent access to you webservice, thus your throttling is handled via the queue config.

    The results can be returned via another queue (or even a queue per application instance).

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