3 Replies Latest reply on Aug 4, 2008 12:10 PM by manik

    UDP Reliability

    jficks1
    jficks1 Jul 31, 2008 10:54 PM

      Hi,

      We are current developing our system using the following JBoss Cache info and configuration:
      1. Version 2.0.0
      2. TCP protocol
      3. Running in 3 servers.

      With the above configuration we are experiencing locking problem.

      Quedtions:
      1. Is anybody have experienced this problem?
      2. Is UDP protocol can solve this problem?
      3. We know that UDP is recommended protocol for JBoss Cache, but is it reliable?

      Your answers are very much appreciated.

      Thanks,
      Ficks

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        • 1. Re: UDP Reliability
          belaban
          belaban Aug 1, 2008 12:03 AM (in response to jficks1)

          1. You need to provide more info

          2. No. Locking issues are usually independent of the transport used

          3. UDP per se is not reliable, JGroups add protocols on top to make it reliable, e.g. lossless delivery & retransmission, fragmentation, flow control and so on

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          • 2. Re: UDP Reliability
            jficks1
            jficks1 Aug 1, 2008 3:26 AM (in response to jficks1)

            Here are the details of our current problems and configuration:

            Problems:
            1. JBoss Cache Loader throws deadlock error message
            2. JBoss Cache doesn't response to any request (i.e. read, write)

            configuration:
            1. Deployed in 3 virtual servers
            2. Using pessimistic locking REPEATABLE_READ
            3. TCP protocol

            We are planning to move to UDP protocol if it can solve the issue and of course if UDP is reliable.

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            • 3. Re: UDP Reliability
              manik
              manik Aug 4, 2008 12:10 PM (in response to jficks1)

              What is your cache loader configuration like?

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