TweetRecently I ran into issues where a web application running on Tomcat 6.0 was crashing due to load spikes in requests. What I noticed in the diagrams below, was there was no issue with CPU or Memory, but rather issues with GC cycles and high Thread count/spike causing the Tomcat instance to become unresponsive and [...]
READ MORE »TweetI have an External configuration file (${appName}-config.groovy) that I wanted to have a global URL declaration such as: Then what I wanted was to use these globally in this one configuration file such as: Then to display them in my index.gsp like: [DAS_SERVICE_URL]…[http://24.40.70.14:8090/DAS010WSWAR] But found they where null in the gsp. [DAS_SERVICE_URL]…[] So I had [...]
READ MORE »TweetI just wanted to relay my thoughts, experiences, and lessons learned on my road to getting Sun Certified as an SCJP 6 Java Programmer. First off, I have been working with Java since 1996 and just now, have I finally undertaken this challenge. I keep seeing a repeated theme that the SCJP does not really [...]
READ MORE »TweetI spent the better part of my day trying to solve an issue where I construct a named configuration property, then I wanted to get that property from the config object. Seemed simple enough… NOT FOR ME. Maybe it was just a Friday or something but…. Here is what I found Link to this post!
READ MORE »TweetI have been trying to create an inner class instance of a Spring constructor argument and have been looking at the Grails documentation that states Constructor arguments can be defined using parameters to each method that reside between the class of the bean and the last closure: (from http://www.grails.org/Spring+Bean+Builder) Link to this post!
READ MORE »TweetI was tasked to implement read timeouts in my Spring webservices. I need to be able to implement this on dozens of webservices fairly easy and be maintainable. I also wanted to use Groovy Spring DSL for my bean declarations, and have my timeout configurable, and Integration testable. Link to this post!
READ MORE »TweetOriginally when I tried to upgrade to grails 1.2.2, I kept running into an error that I did not face in grails 1.2.1 which was an java.lang.NoClassDefFoundError: org.apache.commons.lang.ArrayUtils Link to this post!
READ MORE »TweetI have been trying to change my webservice implementation from org.springframework.remoting.jaxws.JaxWsPortProxyFactoryBean to use org.springframework.ws.client.core.WebServiceTemplate instead. But during this effort, I did not import spring-ws-2.0.0-M1-all.jar that would provide those Classes. I assumed that I would get a descriptive error when I encountered a ClassNotFound issue but I have not. Link to this post!
READ MORE »TweetI was having issues trying to get my Spring DSL to operate in ./grails-app/spring/resources.groovy. I have been able to use XML formatting in resources.xml, but I wanted to leverage groovy as well as be able to replace certain beans based on environment such as using Mock objects during test. Link to this post!
READ MORE »TweetI have gone through several books and countless Blogs to try to get a valid working WAR that would access my external configuration files, both .properties and .groovy files. Link to this post!
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