Recently we encountered a production in an application. This application was connecting to multiple systems of records (SOR). Oracle RAC cluster is one of the primary systems of record. This Oracle RAC cluster was slowing down due to resource constraints.... Continue Reading →
Apache PDFBox is a popular open-source library that facilitates java applications to work with PDF documents. Recently we encountered a Deadlock that surfaced in this library. In this post we have shared how we troubleshooted and identified the root cause... Continue Reading →
All multi-threaded applications are prone to deadlock. Modern Kotlin platform is no exception to it. In this post let’s discuss how to simulate a deadlock in Kotlin and how you can troubleshoot it. What is Deadlock? First let's try to... Continue Reading →
java.lang.ClassLoader#loadClass() API is used by 3rd party libraries, JDBC Drivers, frameworks, application servers to load a java class into the memory. Application developers don’t use this API frequently. However when they use the APIs such as ‘java.lang.Class.forName()’ or ‘org.springframework.util.ClassUtils.forName()’, they... Continue Reading →
Java developers tend to use 'java.util.UUID#randomUUID()' API, to generate a UUID (Universally Unique Identifier) number (i.e., 'b8bbcbed-ca07-490c-8711-5118ee0af2f9'). Under certain circumstances, using this API can affect your application’s availability. Let’s discuss this API in this post with a real-world example. How... Continue Reading →
The World’s Largest 6th Annual All Day DevOps conference held on October 28th 2021. Our architect Ram Lakshmanan was invited there to present a webinar on the topic 7 habits of highly effective Performance Troubleshooters! Below is the deck shared... Continue Reading →
'java.lang.System.getProperty()' is a common API used by Java developers to read the System properties that are configured during application startup time. i.e. when you pass "-DappName=buggyApp" as your application's startup JVM argument, the value of the 'appName' system property can... Continue Reading →
A thread dump is a snapshot of all the threads running in a java process. It’s a vital artifact to troubleshoot various production problems such as CPU spikes, unresponsiveness in the application, poor response time, hung threads, high memory consumption.... Continue Reading →
JAX - Online conference is the meeting place for all the Java and software architecture enthusiasts! This year also, they have conducted the online conference to exchange the knowledge and ideas from the speakers all over the world. They have... Continue Reading →