Operations | Monitoring | ITSM | DevOps | Cloud

How to Get Java Code-Level Visibility

The toughest IT performance problems to solve today are the ones where a user complains that their application access is slow. An IT administrator must then figure out the cause of the problem: is it the browser, the network, the server, the storage, the cloud infrastructure on which the application is hosted, or the application code?

Garbage Collection Settings for Elasticsearch Master Nodes

Elasticsearch comes with good out-of-the-box Garbage Collection settings. So good in fact that the Definitive Guide recommends not changing them. While we agree that most use-cases wouldn’t benefit from GC tuning, especially when it turns out there simply isn’t enough heap, there are exceptions. We found that G1 GC, for example, works well on big heaps. This allows you to have less, bigger nodes, which in turn means less network traffic in a large cluster.

Top 10 Java Performance Problems and How to Solve Them

Java is one of the most popular technologies for application development. Tens of thousands of enterprise applications are powered by Java and millions of people use them daily. Java has been evolving over many decades and there are so many web frameworks, middleware, data access technologies and protocols built on Java.

An Introduction to Java's ThreadLocal Storage

As its name suggests, a single instance of ThreadLocal can store different values for each thread independently. Therefore, the value stored in a ThreadLocal instance is specific (local) to the current running thread. Any other code logic running on the same thread will see the same value, but not the values set on the same instance by other threads. There are exceptions, though, like InhertiableThreadLocal, which inherits parent threads’ values by default.