Enterprise systems are the least changing component within a organization since those systems are complex and engineers have spent a lot of time building those. As long as it does the work, people are reluctant to play with those systems. But with the competitive nature of the economy and the diversified customer bases and customer requirements have made it mandatory to modernize these legacy systems. The below article discusses on how that can be achieved with WSO2 open source technology stack.
WSO2 ESB is an asynchronous high performing messaging engine which uses Java NIO technology for its internal implementations. You can find more information about the implementation details about the WSO2 ESB’s high performing http transport known as Pass-Through Transport (PTT) from the links given below. [1] http://soatutorials.blogspot.com/2015/05/understanding-wso2-esb-pass-through.html [2] http://wso2.com/library/articles/2013/12/demystifying-wso2-esb-pass-through-transport-part-i/ From this tutorial, I am going to discuss about various threads created when you start the ESB and start processing requests with that. This would help you to troubleshoot critical ESB server issues with the usage of a thread dump. You can monitor the threads created by using a monitoring tool like Jconsole or java mission control (java 1.7.40 upwards). Given below is a list of important threads and their stack traces from an active ESB server. PassThroughHTTPSSender ( 1 Thread )
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