Saving 30% Heap Without Changing Code: String Deduplication vs. Interning
Let’s imagine you have designed an application that processes thousands of JSON…
Escape Analysis in HotSpot: When new Object() Doesn’t Actually Create an Object
It is always important to be mindful of performance when writing code.…
Stop Storing Flat Data Like Objects: Why int[] Beats Integer[] in Java
Arrays are one of the most popular data structures in Java, and…
BigDecimal Is Correct, But Expensive: How High Performance Systems Store Money
BigDecimal is a life saver when it comes to financial applications. If…
Sequence Barriers: How They Fix Hidden Coordination Bugs in Async Pipelines
There are times we write code and unintentionally some sort of patterns…
Java Concurrency Defaults: What Actually Happens Under Load
Java provides us with very strong concurrency tools, and they are very…
Stop Guessing: When new ArrayList<>(capacity) Actually Matters
I am sure you have written this in your Java code: List<Type>…
The Bug That Reset a Mars Lander: Priority Inversion in Java, Explained Like It Matters
It’s July 4th, 1997 and NASA’s Mars Pathfinder lander just landed on…
Investigating False Sharing in Java’s ArrayBlockingQueue
We have discussed extensively about false sharing on this blog. In our…
Why Ring Buffers Outperform ArrayBlockingQueue: Understanding the Performance Gap
I am sure if you are reading this blog post, you have…
