• Turn on Gzip for web service request and response

       When constructing client stub instances, we can do the following things: (Assume we use CXF or JAWS-ri)


       AService portyType = super.getPort(AServiceQName, AServicePortType.class);

        BindingProvider bp = (BindingProvider) portType;
                "<service address>");


        Map<String, List<String>> httpHeaders = new HashMap<String, List<String>>();

        // For request
        httpHeaders.put("Content-Encoding", Collections.singletonList("gzip"));

        // For response
        httpHeaders.put("Accept-Encoding", Collections.singletonList("gzip"));


        bp.getRequestContext().put(MessageContext.HTTP_REQUEST_HEADERS, httpHeaders);


        It can reduce a lots network bandwidth and faster transfer flow in the network But the server need do some configuration change can accept or

        recognize gzip content.


  • Cache | Pool the service stub handler

        For jbossws, CXF, jaws-ri you can cache or pool the client service stub handler, you can get benefit from the JAXB cache. So the total

        performance will improve a lot. But XFire you cannot as it will have perm generation contiue gc issues.


        And cache | pool has two choices:

        *  Session based

           Invovle http session, it more like pool

        *  Dispather

           Invovle some load balancing, so it more like cache


  • Reduce as many network communication as you can

        * Coarse-grained api provided

        But that not 100% true. For example: 99% customer need one field of one service model, at that time corase-grained or fine-grained ? But in

        general coarse-grained api was the goal

        * Know your capacity

        Define the box for your services, so that means know your server capacity. Load balancing and partitionning prepare from the very beginning.


  • Service aggregator 

       * Multiple correlated service request can be aggregate together and consider gateway service.

         So the average performance of mutiple intranet communications better than the average of multiple internet communications.


  • Tuning your enviornment

       * Turn on the large memory page support

          Reduce the page missing and avoid cpu swap the phsyical memory and disk.

       * Turn on NUMA, turn of hyperthreading, turn Tubor boost

       * Configure the JVM with the folloing:

          ** Turn on support NUMA: -XX:+UseNUMA -XX:NUMAPageScanRate=0   -XX:-UseAdaptiveNUMAChunkSizing

          ** Give enough memory with 64bit: -Xmx16g -Xms16g -Xmn4g

          ** Turn on parallel old gc if support: -XX:ParallelGCThreads=50  -XX:+UseParallelOldGC

          ** Turn on large page support: -XX:LargePageSizeInBytes=64m