TweetI have been inserting log4j entries into a mongodb database and each entry has been given an ISODate timestamp: Link to this post!
READ MORE »Posts tagged java-javaee-j2ee
Akka actor thread utilization and optimization
TweetI am working on a project where we have http requests from an IVR Voice browser making VXML requests. Each request is a phone caller and each new caller in our application will spawn 6 Akka actor requests for various account look-ups. The issue I had was the concurrent new caller volume of ~20 was [...]
READ MORE »ContainerException The ResourceConfig instance does not contain any root resource classes
TweetI have been creating some REST services with Jersey, and I started getting this error I have searched for a while to find any reference to this error without luck. But finally, I found the issue. I am using glassfish 3.2 and Jersey 1.6 and I assumed, based on documentation that this was valid: Link [...]
READ MORE »PropertyNotFoundException Target Unreachable, identifier ‘patientBean’ resolved to null
TweetPropertyNotFoundException Target Unreachable, identifier ‘patientBean’ resolved to null I have been trying to get a simple @ManagedBean example working without the use of faces-config.xml. My bean is fairly simple: Link to this post!
READ MORE »Voxeo and Avaya Voice Browser redirect loop error
TweetToday I was completing an Auto Function algorythm for my IVR (Interactive Voice Recognition) application I am working on. The premise to to deduce selections for the customer based on account information such as delinquency, or outage information for the region. Then route the customer to the appropriate section automatically. Link to this post!
READ MORE »JVM and Tomcat 6 Tuning new Grails application with legacy Java webservice
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 »My road to the SCJP Sun Certified Programmer for Java 6 Exam 310-065
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 »Using WebServiceTemplate and HTTPClient to enable Webservice read timeout
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 »Composite Primary Key pattern in Hibernate
TweetI was trying to create a relationship without using surrogate primary keys the other day in Hibernate. I started searching around for examples, but did not find many examples that used Annotations. Link to this post!
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