Java is known for having an insatiable appetite for resources, requiring strict controls to not exceed budget limits. However, the latest JDK updates and other developments have helped to make Java runtime extremely flexible in terms of memory usage. When... (more…)

Background Async-profiler is often described as a low-overhead sampling profiler for Java. Sampling means the profiler collects statistical information about program execution by periodically inter... (more…)

I keep encountering situations where RDBMS users think that one second for query execution is anything near fast. Most recently, in this Stack Overflow question: Hibernate SQL In clause making CPU … (more…)

HashMap is one of the most frequently used collection types in Java, it stores key-value pairs. Ideally it expects to use hash table which expects the data access time complexity to be O(1), however, due to hash conflicts, in reality, it uses linked list ... (more…)

In this blog post, you can read just how much of a mess Java XML security is... (more…)