Thread Local Allocation Buffers

Recently, I’ve been working on a Java application that suffered some serious performance issues. Among many problems, the one which…

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The Right Flow For The Job: Which OAuth 2.0 Flow Should I Use?

What is What in OAuth 2.0 OAuth 2.0 is a well-adopted delegated authorization framework which is already with us for…

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Do You Really Know CORS?

Cross-Origin Resource Sharing No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin http://www.sesamestreet.com  is therefore not allowed access. If…

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Why debugging in production is so tempting?

Debugging in Production Why debugging in production is so tempting? In one of my first jobs, one of the tasks…

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Understanding Java Buffer Pool

Understanding Java Buffer Pool The buffer pool space is located outside of the garbage collector-managed memory. It’s a way to…

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Profiling in Production

Profiling in Production If you ever had some serious issues with a performance of your Java application, most probably you…

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Ring Buffer – a Data Structure Behind Disruptor

Ring Buffer – a Data Structure Behind Disruptor Disruptor is a high-performance library for passing messages between threads, developed and…

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A Tale of Two Iterators

When you look at the most popular Java interview questions, you might encounter the one about fail-fast and fail-safe iterators:…

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GC Explained: Algorithms

As described in the previous post, we have four different garbage collectors available in HotSpot JVM. There are some significant…

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