JVM memory has following regions:
Fig: JVM memory regions
a. Young Generation
b. Old Generation
c. Metaspace
d. Others region
Continue reading “Chaos Engineering – Metaspace OutOfMemoryError”Chaos Engineering – Metaspace OutOfMemoryError
Inspect the contents of the Java Metaspace region
JVM Memory has following regions:
a. Young Generation
b. Old Generation
c. Metaspace
d. Others region
Continue reading “Inspect the contents of the Java Metaspace region”Java String intern: Performance impact
java.lang.String#intern() is an interesting function in Java. When used at the right place, it has potential to reduce overall memory consumption of your application by eliminating duplicate strings in your application. To learn how intern() function works, you may refer to this blog. In this post let’s discuss the performance impact of using java.lang.String#intern() function in your application.
Continue reading “Java String intern: Performance impact”Java String intern(): Interesting Q & A
intern() is an interesting function in java.lang.String object. intern() function eliminates duplicate string objects from the application and has potential to reduce overall memory consumption of your application. In this post, let’s learn more about this intern() function.
Continue reading “Java String intern(): Interesting Q & A”In which region intern strings are stored?
intern() is an interesting function in java.lang.String object. intern() function eliminates duplicate string objects from the application and has potential to reduce overall memory consumption of your application. To understand how string intern() function works you may refer to this interesting blog. Intern strings are stored in a string pool in the JVM memory. JVM Memory has following regions:
Continue reading “In which region intern strings are stored?”Troubleshooting Microservice’s OutOfMemoryError: Metaspace
Recently we confronted an interesting ‘java.lang.OutOfMemoryError: Metaspace’ problem in a Microservice application. This Microservice application will run smoothly for initial few hours, later it will start to throw java.lang.OutOfMemoryError: Metaspace. In this post let me share the steps we pursued to troubleshoot this problem.
Continue reading “Troubleshooting Microservice’s OutOfMemoryError: Metaspace”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 troubleshooted and resolved this HTTP 502 bad gateway error in Elastic Beanstalk service.
Continue reading “Troubleshooting HTTP 502 bad gateway in AWS EBS “Benefits of setting initial and maximum memory size to the same value
When we launch applications, we specify the initial memory size and maximum memory size. For the applications that run on JVM (Java Virtual Machine), initial and maximum memory size is specified through ‘-Xms’ and ‘-Xmx’ arguments. If Java applications are running on containers, it’s specified through ‘-XX: InitialRAMPercentage’ and ‘-XX: MaxRAMPercentage’ arguments. Most enterprises set the initial memory size to a lower value than the maximum memory size. As opposed to this commonly accepted practice, setting the initial memory size the same as the maximum memory size has certain ‘cool’ advantages. Let’s discuss them in this post.
Continue reading “Benefits of setting initial and maximum memory size to the same value”Memory leak due to improper exception handling
In this post let’s discuss an interesting memory problem we confronted in the production environment and how we went about solving it. This application would take traffic for a few hours after that it would become unresponsive. It wasn’t clear what was causing the unresponsiveness in the application.
Continue reading “Memory leak due to improper exception handling”
HeapHero – Java & Android Heap Dump Analyzer 