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Troubleshooting

Troubleshooting App unresponsiveness due to Oracle DB

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 →

Troubleshooting deadlock in an Apache opensource library

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 →

Simulating & troubleshooting deadlock in Kotlin

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 →

Troubleshooting HTTP 502 bad gateway in AWS EBS 

The application that we are going to discuss in this post was running on Elastic Beanstalk (EBS) service in Amazon Web Services (AWS). Intermittently this application was throwing HTTP 502 Bad Gateway error. In this post, let’s discuss how we... Continue Reading →

AUTOMATING – OUTOFMEMORYERROR TROUBLESHOOTING

Troubleshooting OutOfMemoryError or any memory related problem is done in manually even in 2019. Troubleshooting and identifying the root cause of OutOfMemoryError can even be automated, by following below mentioned 3 steps: 1. Capture heap dump 2. Restart application 3.... Continue Reading →

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