Author: krishna
Pros & Cons of ESB
An ESB is expected to exhibit the following characteristics: It is usually operating-system and programming-language agnostic; for example, it should enable interoperability between Java and .NET applications. It uses XML (eXtensible Markup Language) as the standard communication language. It supports web-services standards. It supports various MEPs (Message Exchange Patterns) (e.g., synchronous request/response, asynchronous request/response, send-and-forget,…
Read MoreESB products
Market big players has Enterprise Service Bus (ESB) product and few are listed below… Open source http://www.jboss.org/jbossesb/ http://servicemix.apache.org/ https://open-esb.dev.java.net/ Commercial http://www-01.ibm.com/software/websphere/products/appintegration/esb/ http://www.bea.com/framework.jsp?CNT=index.htm&FP=/content/products/aqualogic/service_bus/ http://www.sonicsoftware.com/products/sonic_esb/index.ssp 100% not Open source http://www.mulesource.org/ (ref: http://weblog.infoworld.com/openresource/archives/2007/01/why_im_tired_of.html)
Read MoreEnterprise Service Bus (ESB)
Enterprise Service Bus (ESB) evolved to be the next generation of enterprise integration solutions, with message-oriented middleware (MOM) and web services being considered the closest relatives. However, ESB has a broader scope than MOM. For instance, ESB includes such services as coordination of business processes, or protocol transformation, that normally lay out of scope of…
Read MoreXProc: An XML Pipeline Language
An XML Pipeline specifies a sequence of operations to be performed on a collection of XML input documents. Pipelines take zero or more XML documents as their input and produce zero or more XML documents as their output. A pipeline consists of steps. Like pipelines, steps take zero or more XML documents as their input…
Read MoreSML, What is it?
The Service Modeling Language (SML) provides a rich set of constructs for creating models of complex services and systems. Depending on the application domain, these models may include information such as configuration, deployment, monitoring, policy, health, capacity planning, target operating range, service level agreements, and so on. Models provide value in several important ways. Models…
Read MoreSome Useful -XX Options JDK 5 or higher
The options below are loosely grouped into three categories. Behavioral options change the basic behavior of the VM. Performance tuning options are knobs which can be used to tune VM performance. Debugging options generally enable tracing, printing, or output of VM information. Behavioral Options Option and Default Value Description -XX:-AllowUserSignalHandlers Do not complain if the…
Read MoreBinding XML attribute to a DataGrid column
Most binding examples work with a flat XML structure. However, in most cases the format of the data attribute will not work directly with Flex components. I was looking for a way to bind XML attributes to a DataGrid in Flex. XML: <Vehicles> <Vehicle id=”1″ status=”SUCCESS”> <car type=”ford”>my car</car> </Vehicle> <Vehicle id=”2″ status=”SUCCESS” />…
Read MoreWhy I picked Flex and not JSP / JSF
• Flex and JSP applications interact effectively with the browser caching mechanism to eliminate redundant loading of resources from the client. • Flex applications are delivered as complete, self-contained applications, while JSP applications generally require a round trip to the server to generate the next page of the application. These architectural differences have the following…
Read More6 new Features on JSP & Servlets
If you use a web container such as Tomcat 5.x, which supports Servlet API 2.4 and JSP 2.0, then you can use a number of useful new features. These include: 1. Servlets as Welcome Files Welcome files are automatic web server responses to requests that specify only directories, not specific web components or files. When…
Read MoreDEBUG tomcat with eclipse
Whichever platform you are using (Tomcat or JBoss) you need to start them with the JPDA debugging enabled. For Tomcat this is very easy. In the $CATALINA_HOME/bin directory there is a script catalina.sh. If you provide the arguments ‘jpda start‘ tomcat will startup and listen on port 8000 for a debugger connection. The value of…
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